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GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:39 C.S.T. Tape MC-1 

Page 1 



This is the Gemini News Center with a 9:30 a.m., EST status 
report on the Gemini 12 countdown and the overall Gemini 12 mission. 
In a matter of minutes, actually 9:U3 a.m., EST, the Gemini 
spacecraft count will begin. The backup pilots for the Gemini 12 
mission, Astronauts Gordon Cooper and Gene Cernan are now 
standing by. at the blockhouse, and in a matter of minutes, they'll 
be boarding the Gemini spacecraft at the 100 foot level to start 
their prelaunch checkout of the spacecraft. The backups will 
remain in the spacecraft and be ready to report to the prime 
pilots , Astronauts Jim Lovell and Buzz Aldrin when they report 
on the scene this afternoon. Lovell and Aldrin are still asleep 
at this time. The plan, according to the astronaut countdown, is 
to awaken them at 11:30; however, if they do awaken earlier than 
that, they will get up at an earlier time. We will keep close 
watch on this, but our advisories right now are that the two 
astronauts are still asleep. To cover some of the highlights 
of what has transpired thus far, all is going very well with the 
countdown at this time. We brought the propel lants aboard the 
Gemini Launch Vehicle starting at 2:53 a.m., EST, this morning, 
and completed the propellant loading in 3 hours and 21 minutes. 
The range in Agena countdown started, this was the real start 
of the countdown, at k:23 a.m., EST, at T-680. The Atlas 
standard launch vehicle countdown came in at 8:23 a.m., EST, 
or the T-UUO mark in the count and as we mentioned at the 
start of this status report, the next highlight comes up in 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 8:39 C.S.T. 



Tape MC-1 
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just several minutes when the spacecraft count begins. We've 
already been informed by phone just a matter of a few moments 
before coming up with this announcement, that the Test Conductor 
definitely intends to start this count. We can consider that 
the Gemini 12 count will start on time at T-360, 9:43 a.m. As 
we reported, the backup pilots, Cooper and Cernan, will be 
going aboard the spacecraft shortly to start their preliminary 
checkouts. So all is going well at this time of the Gemini 12 
countdown. We'll be coming up with several more reports over 
the next hour or so from here in the News Center, and then the 
reports of Mission Control will begin at approximately 11 o'clock, 
11 a.m., EST, this morning. . During the still early par/ of the 
count at that time, the reports will be coming up about every 
half hour or so until we get deeper into the count. Obviously, 
if any problems arise, they will be reported either from here 
in the News Center or from Mission Control as rapidly as we 
know they have occurred. All is going well with the Gemini 12 
countdown at this time, and just about at this point now, the 
Gemini spacecraft countdown starting. This is the Gemini News 
Center . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:06 a.m. CST Tape 2 

Page 1 



This is the Gemini News Center at Cocoa Beach. The countdown 
with the spacecraft of the Gemini 12 mission was picked up right 
on schedule at 9.-U3 this morning and all goes quite well leading 
to our planned liftoff times of 2:08 this afternoon and 3:^6. 
Our formal announcements from the Mission Control Center at Cape 
Kennedy are scheduled to start about 11 o'clock, but as of now, 
the countdown proceeds quite well and repeating it again, we 
did pick up the spacecraft count at 9:U3 this morning. This is 
the Gemini News Center . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:5^ a.m. CST Tape 3 

Page 1 



This is Gemini Launch Control. We are at T-289 minutes and 
counting. That is T-289 and counting on the Gemini 12 mission, 
and all is going well with our simultaneous countdown at this 
time. The count actually started about 6 and a half hours 
ago with the "beginning of the range countdown and will wind up 
with some nine different functions in the simultaneous countdown 
as we get closer to the planned Atlas/Agena liftoff. As reported, 
all is going well at this time. We also have a satisfactory 
weather forecast both here in the Cape area and around the world 
track. Astronauts Jim Lovell and Buzz Aldrin, the prime pilots, 
got up about 23 or 2*1 minutes ago, actually at 10:30 a.m., EST. 
The astronauts got up. We received confirmation that they did 
retire earlier this morning at toe a.m. They went to bed at one 
a.m., and got up at 10:30 this morning. Meanwhile, their backup 
pilots, Astronauts Gordon Cooper and Gene Cernan are aboard the 
Gemini 12 spacecraft making preliminary checks, at .the 100 foot 
level at Complex 19 . At Complex lk, where we have the Atlas/Agena 
being checked out, the crew is gearing up for the start of some 
of the major propellant loading that is conducted during the 
final phase of the countdown. Coming up about seven minutes 
from now, the crew will start loading the hydrozine fuel aboard 
the Agena second stage. This will be followed by roll back of 
the gantry service structure and then they will load the acid 
oxidizer aboard the Agena. A little further on in the count, 
the final phase of the propellant loading for the Atlas/Agena, 



GEMINI 12, MISSION COMMENTARY, ll/ll/66, 9:5^ a.m. CST Tape 3 

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the loading of the liquid oxygen aboard the Atlas 'first stage 
will begin. All systems going well. To repeat, the prime 
pilots are up, they got up at 10:30 a.m. EST. They will start 
their physical examination about 11:30, 11:30 a.m., EST, and 
have breakfast about 10 minutes later or 11: kO a.m., EST. Now 
at T-286 ijiinutes, 52 seconds and counting. This is Gemini 
Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:28 a.m. CST Tape U 

Page 1 

This is Gemini Launch Control. We are at T-255 minutes, 26 
seconds and counting on the Gemini 12 count. All going well both 
at launch complex 19 with the Gemini 12 and launch vehicle, and 
at complex Ik with the Atlas/Agena. At this point at complex Ik, 
we are just finishing up the loading of the hydrazine fuel aboard 
the Agena second stage. We are loading some UOOO pounds of fuel 
aboard the Agena this morning and all is going well. We expect 
to get a report shortly that this has been completed. About 
12 minutes from this time, once we get the report for the Agena 
fuel loading has been completed, we'll start rolling back that 
gantry service structure at the pad. It will rolled back to 
its fall back position — this takes about 30 minutes then 
the crew will be ready to load the oxidizer, the red-fuming 
nitric acid that is used as an oxidizer for the Agena in the 
second stage. In the meantime, the prime pilots for the mission, 
Astronauts Jim Lovell and Buzz Aldrin, are up at their crew 
quarters at the Kennedy Space Center. They will be going down 
the hall to start their final physical examination just a 
couple of minutes from now. This will be followed by breakfast 
in the crew quarters. They'll have about ten guests for 
breakfast, we'll give you a report on the guest list shortly. 
All going well at this point in the count, 25U minutes, 3 
seconds and counting. This is Gemini Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:38 a.m. CST Tape 5 

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This is Gemini Launch Control at T-2^5 minutes and counting. 
T-21+5 and counting, all still going very well with our simultaneous 
countdown for Gemini 12. At this time, the prime pilots, Astronauts 
Jim Lovell and Buzz Aldrin, have gone down the hall from their 
crew quarters at NASA's Kennedy Space Center to take their final 
physical examination. This will take about ten minutes or so. 
The examination will be given >by Dr. Norman Pincott. We'll get a 
report from Dr. Pincott following the examination. When the 
examination is completed, the two pilots will sit down for break- 
fast. They will have the usual astronaut menu of filet mignon, 
steak, and eggs, toast and coffee, and juice. The two pilots 
got up at 10:30 a.m., EST, this morning after about 9 and a half 
hours sleep. In the meantime, their packup pilots, Astronauts 
Gordon Cooper and Gene Cernan, are aboard the Gemini 12 space- 
craft at complex 19 . They've now been in the cockpit about two 
hours making the preliminary checks, and they'll be ready to 
report to the two prime pilots later in the countdown when they 
come to the pad. Also at complex 19, we're gearing up to bring 
in the final major part of our simultaneous countdown. That is 
the start of the Gemini Launch Vehicle countdown which will begin 
some three and a half minutes from this time. When the so-called 
GLV does come into the count, we'll then have some nine countdowns 
going simultaneously leading up to the launch of the Atlas/Agena 
and the Gemini 98 minutes later. At complex lk s our count is 
still going well with the Atlas/Agena. The crew is monitoring 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:38 a.m. CST Tape 5 

Page 2 



the progress of the removal of the gantry service structure at 
this time. This is about a 30 minute operation to get the 
service structure back to its fallback position. Then they'll 
be ready to clear the pad area and start loading the oxidizer 
aboard the Agena second stage. This is the red-fuming nitric 
acid that is used with the hydrazine fuel to give us our engine 
burn on the Agena. All systems going well at this time. T-2U2 
minutes, k6 seconds and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:53 A. M. 

Tape 6, Page 1 



This is Gemini Launch Control at T-230 minutes and counting. 
All still proceeding very well with Gemini 12 count at this time 
both at launch complex 19 with the Gemini launch vehicle and 
spacecraft, and at complex 1*4- with the Atlas/ Agena, and at the 
crew quarters at the Kennedy Space Center, Merritt Island. The 
prime pilots, Jim Lovell and Buzz Aldrin, are now sitting down 
to their breakfast. As reported earlier, they'll have the 
usual astronaut fare of filet mignon, eggs, toast, coffee and 
juice. They have ten guests this morning for breakfast, Chief 
of the Astronaut Office, Alan Shepard is joining them; two of 
the scientist astronauts - they are Owen Garriecttand Ed Gibson - 
and seven of the newest team of pilot astronauts who were named 
last April. We will give you their names rapidly here, and 
we'll have them available throughout the day. The seven new 
astronauts who are attending the breakfast are Bruce McCandless, 
Don Lind, Al Worden, Jack Swigert, Ron Evans, William Pogue and 
Vance Brand. Those are seven of the newest selected pilot astro- 
nauts. They were selected last April and they are joing the 
prime crew for breakfast. Meanwhile, the backup pilots, 
Gordon Cooper and Gene Cernan, still aboard the Gemini 12 space- 
craft making their checks. All their reports coming back to 
the blockhouse says, good. The whole countdown, all nine ele- 
ments of the simultaneous countdown, axe all going very well 
at this time. We also have a go from the weatherman. The 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:53 A. M. 

Tape 6, Page 2 



prediction is for satisfactory weather here at the Cape and 
around the world track. Weather conditions will be satis- 
factory for the flight with a forecast at Cape Kennedy of 
partly cloudy skies, winds from the southeast at ten knots, 
a sea state offshore of two to three feet and an expected 
forecast of about 80 degrees at launch time. Weather is 
acceptable all throughout the rest of the world track. We 
are go at T-22? minutes, k5 seconds and counting. This is 
Gemini Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 11:02 a.m., CST Tape 7 

Page 1 



This is Gemini Launch Control at T-221 minutes and counting. 
We are proceeding and all is still well with the Gemini 12 count- 
down at this time. While the prime pilots, Astronauts Jim Lovell 
and Buzz Aldrin, enjoy their breakfast at the crew quarters at 
the Kennedy Space Center, their backup pilots, Gordon Cooper and 
Gene Cernan are still hard at work at the 100 foot level at 
complex 19 making the preliminary checks of the Gemini 12 spacecraft. 

The two backup pilots are participating in a test of the spacecraft 

point, a 
computer at this/joined by the blockhouse/short distance from the 

spacecraft itself. At launch complex Ik with the Atlas/Agena, we 

now have the gantry service structure rolled back and the crew 

is making the preliminary preparations to load the acid oxidizer 

aboard the Agena second stage. We'll be loading some 10,000 pounds 

of the acid to complete the overall propellant loading of the 

Agena. The final phase of propellant loading for the overall 

vehicle will come a little later in the count with the loading 

of the liquid oxygen aboard the Atlas first stage. This will 

continue down to the final moments before the Atlas/Agena liftoff 

scheduled for 2:06 -- correction, 2:08 p.m., EST, this afternoon. 

All still going well at this point at T-219 minutes, 35 seconds 

and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 11:13 A. M. , CST 

Tape 8, Page 1 



This is Gemini Launch Control at T-210 minutes and counting. 
T-210 and counting. All still proceeding well with the overall 
countdown at this time. At launch complex 1*+ the Launch Vehicle 
Test Conductor has given a go to start the loading of the acid 
oxidizer aboard the Agena second stage, the final phase of the 
propellant loading of the second stage Agena. At the crew quar- 
ters at the Kennedy Space Center, Merritt Island, the prime pilots, 
Astronauts Jim Lovell and Buzz Aldrin, are still enjoying their 
breakfast at this time and are due to depart from the crew quar- 
ters at about 35 minutes past the hour and proceed to the ready 
room at launch complex l6 where they will don and check out their 
space suits and stand by to be called to complex 19 at about the 
125 minute mark in the countdown. The backup pilots, Astronauts 
Gordon Cooper and Gene Cernan, now have left the spacecraft at 
the 100- foot level of complex 19 • They have been there just a 
little less than three hours checking out the spacecraft. The 
reason they leave at this point in the count is in preparation 
for the pressurization of the Gemini Launch Vehicle which will be 
coming up in about 20 minutes. We do evacuate that White Room 
area while we pressurize both stages of the Gemini Launch Vehicle 
with nitrogen and following that, the backup pilots and the White 
Room crew will return to the 100- foot level to make the final 
preparations for the arrival of astronauts Lovell and Aldrin. 
All still going very well with our countdown at this time, T-208 
minutes, 2k seconds and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 11:23 a.m., CST Tape 9 

Page 1 



This is Gemini Launch Control, T-200 minutes and counting. 
T-200, all still proceeding well with the simultaneous countdown 
for Gemini 12. We are now about an hour and five minutes away 
from the planned Atlas/Agena liftoff — correction, about an 
hour and 1+5 minutes away from the Atlas/Agena liftoff which is 
scheduled for 2:08 p.m., EST. We are continuing to load some 
10,000 pounds of the acid oxidizer aboard the Agena second stage. 
The report from the blockhouse at complex ih is that the loading 
of the oxidizer is going well. We expect the prime pilots, Jim 
Lovell and Buzz Aldrin, to be departing from their crew quarters 
at the Kennedy Space Center in about 12 minutes from this time. 
They will then proceed to the ready room at complex 16 and make 
their final preparations for the flight and standby to be called 
to complex 19 . All systems still going well at this point, now 
at T-199 minutes, mark. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 11:33 A. M. CST 

Tape 10, Page 1 



This is Gemini Launch Control at T-190 minutes and counting. 
Just about a minute ago the prime pilots, Astronauts Jim Lovell 
and Buzz Aldrin, departed from their crew quarters and are now 
leaving the Kennedy Space Center and proceeding toward the ready- 
room at Launch Complex 16. When they arrive at 16 they'll make 
their final preparations donning their suits, having final checks 
of both their sensors and the suit circuits themselves, then will 
stand by awaiting the call to the pad. TMSy-.-P.e.r due to depart from 
Complex 16 to go to their Gemini 12 spacecraft at about the 125 min- 
ute mark in the count. We mark the time of their departure as 
31 minutes past the hour. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, ll:kk a.m., CST Tape 11 

Page 1 



This is Gemini Launch Control, T-179 minutes and counting. 
All still proceeding very well with our simultaneous countdown 
for Gemini 12. This has been the report we've had all morning. 
Since the count was picked up early this morning, there have been 
no problems in our countdown thus far. Astronauts Jim Lovell and 
Buzz Aldrin should be just about arriving at the ready room at 
complex 16 at this time. They departed their crew quarters at 
the Kennedy Space Center a matter of some 12 minutes ago. On 
their arrival at the ready room, they will get an immediate 
status report on the overall countdown. They will be told that 
the status for Gemini 12 is very good at this time. We are now 
about an hour and 2k minutes or so away from the Atlas/Agena 
liftoff, the first of the two launches planned today in the 
Gemini 12 mission. At launch complex lk, the control of the 
countdown clock has: now been given to the control of the Launch 
Vehicle Test Conductor at pad 1^. This means that the launch 
vehicle Test Conductor at Ik will be the one to clear any holds 
from this time down to the Atlas/Agena liftoff. We have a very 
complex countdown in operation at this time, some nine different 
countdowns all operating simultaneous ly. As a result, the so-called 
control of the clock is a very vital factor. It now has revested 
to pad ik where we are making our final preparations for the 
Atlas/Agena launch. All systems still looking good. We are at 
T-177 minutes, 2k seconds and counting. This is Gemini Launch 
Control. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 11:5*+ A. M. CST 

Tape 12, Page 1 



This is Gemini Launch Control at T-I69 minutes and counting. 
T-I69. Our countdown continues to go very well at this time. The 
backup pilots, Astronauts Gordon Cooper and Gene Cernan, are now 
back aboard the Gemini 12 spacecraft at the 100- foot, level of 
Complex 19. They returned to continue their spacecraft checkout 
after we completed the hookup of the destruct packages aboard the 
vehicle and pressurized the two stages of the Gemini Launch Vehicle 
with nitrogen. The pad area was cleared while these two activities 
were in process. They have been completed and the backups are now 
aboard making their final checks. The Flight Director, Mr. Glynn 
Lunney in Houston, has come aboard to make a status check. All 
appears to be going well as far as the overall operation, the over- 
all simultaneous countdown for Gemini 12. The prime pilots, Astro- 
nauts Jim Lovell and Buzz Aldrin, are in the ready room at Launch 
Complex 16 making their final preparations. T-168 minutes and 
counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 11, 1966, 12:0U CST 

TAPE 13, 
PAGE 1 

This is Mission Control Houston. We are standing now in the 
Gemini count at T-I58 minutes and 53 seconds, and T-fe63 minutes 
and 50 seconds in the Atlas Agena launch count. Around the 
Manned Space Flight Networks Ve have one minor problem with a 
high frequency transmitter out at the Canton Island voice 
remoting station in the Central Pacific. However, it is 
estimated this will be repaired at 12:30 p.m. CST. Mean- 
while all of the recovery ships are reported to be on 
station waiting to support the Gemini 12 mission. An initial 
feet wet time or the time that the spacecraft will cross the 
beach at Cape Kennedy has been passed along as k5 seconds after 
liftoff. We'll switch now to launch control at the Cape. 

This is Gemini Launch Control. At this point in the simultaneous 
countdown all still going well here at the Cape. In process 
at Launch Complex 19, the backup pilots Astronaut's Gordon 
Cooper and Gene Cernan still making their checks of the space- 
craft and they'll standby to give a report to the Prime Pilots' 
Jim Lovell and Buzz Aldrin when they come aboard. It Complex lU 
we are getting ready for the final phase of our propellant 
loading, that is, loading liquid oxygen aboard the Atlas first 
stage. We will actually start this about 17 minutes from this 
time, but we will have about a 10 minute showdown period to 
prepare the complete system for the extremely low temperatures 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 12:OU p.m. CST 

TAPE 13, 
PAGE 2 

encountered with the liquid hydrogen, some 297 degrees below 
zero. The so called launch preps are in process at ih now, 
all going well on our simultaneous countdown. T-157 minutes 
10 seconds and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 12:lk p.m. CST Tape ih 

Page 1 



This is Gemini Launch Control at T-IU9 minutes and counting. 
T-1^9 and counting, all proceeding very well with our simultaneous 
countdown. At Complex Ik, the crew has been making final prepara- 
tions to the liquid oxygen loading which will start about 8 minutes 
from this time. We'll be loading some l8,U00 gallons of liquid 
oxygen aboard the Atlas first stage this afternoon to complete 
the overall propellant loading of the vehicle. The hydrocarbon 
fuel was loaded aboard the Atals first stage several days ago. 
All systems look good to start the liquid oxygen loading. They 
have just made a status check in the blockhouse and have received 
a "Go" to start this key sequence. We'll load the liquid oxygen 
aboard at a high rate, up to 95 percent level, and then continue 
to top it off during the remainder of the countdown, because the 
liquid oxygen is such a — at such an extremely low temperature 
at -297 degrees. It continues to boil off as we feed it aboard 
the vehicle. As a result, we continue to top off the supply 
until the two minute and ten second mark in the countdown, when 
the boiloff vent closes and we should, at that point, have 100 
percent supply of liquid oxygen onboard the vehicle. Also, in 
effect at this time is the guidance command test with the 
Atlas/Agena. This is a simulation of the powered flight of the 
Atlas /Agena vehicle. That is, the booster engine rsustainer 
separation and ignition and performance of the Agena second stage. 
It is a test between the radio command guidance system and the 
blockhouse crew with the launch vehicle to insure that it will 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 12:lU p.m. CST Tape lU 

Page 2 



respond to the radio command guidance commands during flight. 
We are now at T-1^7 minutes, 11 seconds and counting, all still 
going well. This is Gemini Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 12:2^ P. M. CST 

Tape 15 > Page 1 



This is Gemini Launch Control coming up at T-139 minutes 
and counting. We're now about kk minutes away from the planned 
Atlas/Agena liftoff scheduled for 2:08 P. M. Eastern Standard 
Time. All our checkouts still going very well at Complex 1^ 
with the Atlas/Agena and Complex 19 with the Gemini Launch 
Vehicle and spacecraft. At Pad 19 the backup pilots, Gordon 
Cooper and Gene Cernan, still aboard the spacecraft making 
their final checks. They'll be standing by for the prime crew, 
Astronauts Jim Lovell and Buzz Aldrin, when they come aboard a 
little later in the count probably about 15 minutes from this 
time. The backups will give a report to the prime pilots on 
the status of their spacecraft. From the way the checkout has 
gone, this report should be a very good one. At this point, 
Cooper and Cernan are participating in some final checks of 
the spacecraft fuel cells with the spacecraft Test Conductor in 
the blockhouse. At Complex 19 we have - correction, Complex Ik - 
we have begun the loading of the liquid oxygen supply aboard the 
Atlas first stage. As reported earlier, we'll be loading some 
18,000 gallons of "lox" aboard today to complete the propellant 
loading. This lox loading sequence will go all the way down in 
the count to two minutes and ten seconds when the boil off valve 
closes and -at that point we should have our 100 percent supply 
onboard. All systems still going well. About 12 minutes from 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 12: 2k P. M. CST 

Tape 15, Page 2 



now, Astronauts Jim Lovell and Buzz Aldrin should get the word 
from the blockhouse to come from their ready room at Pad 16 to 
their Gemini 12 spacecraft at the 100- foot level at Complex 19. 
All systems still going well at 137 minutes, 20 seconds and 
counting. This is Gemini Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 12:25p.m. CST 

TAPE 16 
PAGE 1 

Shepard at Launch Complex 16. The crew, Aldrin and Lovell 
are in the final stages of the suiting process. They will 
be coming out in approximately 10 minutes to go from here 
to Pad 19. Everything has been going smoothly so far. The 
boys are in excellent shape. They are particularly pleased 
with the launch weather which as you all can see down here 
is beautiful. We have heaidof no problems at all on either 
of the two launch vehicles and as far as we are concerned 
the launch from this point of view will go on schedule. 
Do we have any questions? 

QUESTION - What time did they get to bed last night and 
how did you (garble) 

Shepard - They went to bed last night about 1:00. They 
were spending most of the time after dinner in the evening 
looking over the Flight Plan again. Once they get so 
throughly trained for a flight it is pretty hard to keep 
them away from it and any spare time they sit down and 
look over the checklist one more time and look over the 
Flight Plan one more time. There is no such thing as 
becoming too familiar with the Flight Plan, particularly on 
a detailed flight. So they went to bed about 1 and got 
up around 10:30 today and we resumed the countdown ever since. 
QUESTION - Did they stay in their quarters all that time? 
Shepard - Yes. That is correct. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 12:37 p.m. CST Tape 17 

Page 1 



This is Gemini Launch Control. We are at T-125 minutes, 
four seconds and counting. All still proceeding very well with 
the Gemini 12 simultaneous countdown at this time. We are stand- 
ing by to await the departure of the prime pilots, Jim Lovell 
and Buzz Aldrin, from their ready room at Complex 16. They 
should be leaving shortly. They will come over to Launch 
Complex 19, go directly up to the 100 foot level and the so-called 
White Room where the hatches for the Gemini 12 spacecraft are 
located. They will be greeted among others by their backup 
pilots, Gordon Cooper and Gene Cernan, who will give them a 

final report on the status of their spacecraft. From the count, 
has been 

as far as the spacecraft /■ concerned thus far, and as a matter 
of fact, the complete hardware we have at both Pads Ik and 19, 
all has been going well and it is expected that is the report 
the primes will receive. They should be departing shortly. We 
are now about 29 minutes away from the planned Atlas/Agena liftoff 
with all going well. At Complex 1^, some final telemetry checks 
of the overall vehicle taking place. Now 12h minutes and counting. 
The astronauts have just come out of their ready room at Complex 16, 
Jim Lovell and Buzz Aldrin. They are boarding the transfer van, 
and in a matter of minutes, should be at the base of the pad at 
Complex 19. Now at T-123 minutes, h2 seconds and counting. This 
is Gemini Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 12:^3 P« M. CST 

Tape 18, Page 1 



TMs is Gemini Launch Control at T-120 minutes and counting. 
All still going well as Astronauts Jim Lovell and Buzz Aldrin, 
the prime pilots, now have arrived at Complex 19 and are on 
their way up the elevator to the White Room. The White Room is 
located at the 100- foot level. After they get a quick report on 
the status of their spacecraft from their backup pilots, Gordon 
Cooper and Gene Cernan, they'll he ready to come aboard. This is 
due in the countdown about four and a half minutes from this time. 
To repeat, Astronauts Jim Lovell and Buzz Aldrin now at the Pad. 
We're about 2k minutes away from the planned Atlas/Agena liftoff. 
They have now arrived in the White Room and they are being greeted 
by the crewmen in the White Room at this time. They have turned 
in two very large tickets that were given to them as they came 
up the ramp at the base of the complex at Complex 19 • These two 
tickets were admittance tickets marked Admit One and each one of 
them had the printing of a f err is wheel on them outlining the 
complete history of the Mercury and Gemini flights thus far with 
the names of the crewmen who participated. There is also a sign 
that has welcomed the crewmen in the White Room which says as 
follows in large block letters: "Notice: last chance, no reruns, 
show will close after this performance." We're now at T-118 min- 
utes, 30 seconds and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, I966, 12:k6 p.m. CST 

TAPE 19, 
PAGE 1 

This is Gemini Launch Control, T-116 minutes 25 seconds and 
counting. Some 21 minutes away now from the planned Atlas/ 
Agena liftoff which is due to occur at 8 minutes past the 
hour. Just a matter of moments ago, Astronauts' Jim Lovell 
and Buzz Aldrin went over the hatch and are now aboard the 
Gemini 12 Spacecraft. Just prior to their going aboard, each 
was presented with a little gift by the crewmen in the White 
Room. Buzz Aldrin was presented with a rather king size 
replica of a slide rule. 1 This partly was in tribute to the 
fact that he is in fact Doctor Aldrin, that is, he has a 
Science Doctorate. Also a tribute to the fact that he paid 
quite a pit of attention to even minute details during the 
checkout of the Gemini 12 Spacecraft. Jim Lovell was presented 
with a large copy of a Flight Plan indicating that there 
had been several changes to the flight Plan during their final 
preparations while they were here at the Cape. They are 
now aboard, the hatches should be closed about 10 minutes - 
15 minutes from this time. We will standby to see when 
that occurs. In the meantime at Launch Complex Ik with the 
Atlas/Agena all is still going well. We're in the process 
of the final range safety command check between the Air Force 
Eastern Test Range and the blockhouse and the Atlas/Agena 
Launch Vehicle. That is, checking that the dd|3 truct system 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 11, 1966, 12:k6 pm, CST 

TAPE 19, 
PAGE 2 



aboard the Atlas/Agena will be acceptable for the flight. 
All systems still booking good, we are now at T-llU minutes 
56 seconds and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/11/66, 12:53 P. M. CST 

Tape 20, Page 1 



This is Gemini Launch Control. T-110 minutes and counting 
in our overall simultaneous count. T-15 minutes away from the 
planned Atlas/ Agena liftoff. It's due at eight minutes past 
the hour. All systems still going very well at both pads in 
the checkout of both vehicles and the Gemini 12 spacecraft. 
Astronauts Jim Lovell and Buzz Aldrin are now aboard the Gemini 
spacecraft and in the process of getting checked in and the 
various plugs connected. Some of the first checks they will 
make will be a communications check with the spacecraft Test 
Conductor in the blockhouse and "Stoney" the Capsule Communi- 
cator, who is one of our newest astronauts, Astronaut Stu Roosa. 
He spells his name, Roosa. Following that there will be 
some final medical checks to ensure that we are getting satis- 
factory readouts from the sensors that both pilots are wearing. 
Meanwhile at Launch Complex lU, our countdown still continuing 
to go very well. We've received confirmation that two key tests 
during this final phase of the count has been completed. That 
is the Range Safety Command Test, the check of the destruct 
system of the vehicle, and an autopilot system check which we 
actually swivel those engines at the base of the Atlas vehicle 
in response to commands from the autopilot to ensure that they 
will perform properly during the powered phase of flight. All 
systems still looking good at 108 minutes, 3^ seconds and 
counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , ll/ll/66, 12:58 p.m. CST Tape 21 

Page 1 



This is Gemini Launch Control. T-105 minutes and counting. 
T-10 minutes and counting for the Atlas/Agena. We have just 
closed Buzz Aldrin's hatch and this was just followed by Jim 
Lovell's hatch also being closed. Both hatches are now closed 
and we are in the process of locking them up at the 100 foot 
level at Launch Complex 19. This came about k and one -half 
minutes early in the countdown, but this is the way the count 
has been going, excellently all day and the hatches are now 
closed. We will start our preliminary checkouts with the pilots. 
Down at Launch Complex lh, the Launch Mission Director, Merritt 
Preston, has just conducted a final status check of our launch 
readiness to fly the Atlas/Agena. All reports came back "Go" 
and this was the order that was given to the Launch Director 
at Complex Ik. All systems still looking good. We are now 
some nine minutes away from the Atlas/Agena liftoff. It is 
due at eight minutes past the hour. This is Gemini Launch 
Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 1:03 p.m. CST Tape 22 

Page 1 



This is Gemini Launch Control. We are T-100 minutes and 
counting. T-5 minutes and counting for the Atlas/Agena. The 
reports are coming rather fast now from both blockhouses on the 
rapid series of activities taking place. Astronauts Jim Lovell 
and Buzz Aldrin checking in with their communications checks and 
giving readouts of their biomedical sensors. Meantime, at Launch 
Complex Ik, the Agena second stage, now has gone on internal power. 
That is, on its own batteries, and we are starting the last — final 
five minutes of the count. Some of the highlights coming down from 
here will be the telemetry system of the Atlas /going on internal 
power at three minutes and 30 seconds. We close that liquid oxygen 
boiloff valve at two minutes and 10 seconds. This will give us our 
complete load of liquid oxygen aboard the vehicle. Some 18,000 
gallons. Now coming up on 99 minutes and counting in about two 
seconds. Mark 99 minutes and counting. T-h minutes for the 
Atlas/Agena. As we come up to 98, the time will be five minutes 
past the hour. We will attempt to count that down for you. We 
are now three minutes and U7 seconds away. To continue down the 
latter stages of the countdown over about the last minute and a 
half, the launch vehicle test conductor in the blockhouse has 
been monitoring a series of ready lights on his console. There 
are about 20 of them and they will turn from yellow to green as 
these particular final events click off. We wind up at about the 
19 second mark in the count. The test conductor presses the auto- 
matic sequencer switch, and we go on automatic sequence which is 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 1:03 p.m. CST Tape 22 

Page 2 



completed with the ignition sequence of the first stage of the 
Atlas at the k second mark in the countdown with liftoff at 
zero. Now nine seconds away from three minutes, and five minutes 
after the hour, k, 3, 2, 1, mark. T-3 minutes and counting. 
Five minutes after the hour. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 1:06 p.m. CST 

TAPE 23, 
PAGE 1 

This is Gemini Launch Control, T-2 minutes and counting. 
T-2, all going well as the rapid series of reports are 
continuing to come in from the blockhouse at Complex Ik. 
The liquid oxygen boiloff vent valve now has been closed. 
We now have a launch vehicle at Complex 1^ standing about 
103 feet and weighing some 267 thousand pounds. Now one 
minute and 38 seconds away from the planned liftoff. The 
Launch Vehicle Test Conductor now monitoring his lights 
and we'll get a rapid sequence of reports as these ready 
lights come on. All systems still looking good. We are 
now one minute and 22 seconds away from the planned Agena 
launch. Astronauts' Jim Lovell and Buzz Aldrin standing 
by in their spacecraft at Launch Complex 19 for the Atlas 
Agena launch. At T-l minute and 10 seconds all systems 
still looking good. The water for the flame bucket at 
Pad Ik has been turned on it will start pouring out some 
30,000 gallons a minute. T-l minute and counting. T-60 
seconds and counting. All systems still looking good. 
The sequence still continues to command. i. We have an Agena 
ready light, we have a range safety ready light, the final 
ready light has just come on. T-k-5 seconds and counting. 
All systems still looking good. T-kO seconds and counting. 
The crew continues to monitor in the blockhouse. Recorders 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 1:06 pm CST 

TAPE 23, 
PAGE 2 

are .now at the fast speed. T-30 seconds and counting, T-30. 
All our sequent lights appear to be on, T-2I+ seconds and count- 
ing. T-20 seconds and counting. T-15 seconds and counting, 
the sequencer' is in we are on an automatic sequencer. at this 
time. T-10, 9, 8, 7, 6, 5, h, 3, we have ignition. 

We have liftoff at approximately 8 minutes and o second past 
the hour. ' Everything appears normal up to now, in the Agena 
launch. Flight Dynamics Officer reports everything is looking 
good from his standpoint. We have an official liftoff time of 
7 minutes 59 seconds past the hour. Tracking plot of the 
Agena Launch is following quite closely to the plotboard here 
in Mission Control. Some 2 minutes 11 seconds after liftoff 
we will have , the booster engine shutdown. Range Safety says 
that everything is green. We are 1 minute 15 seconds after 
liftoff here. We are approximately 13 miles in height now, 
downrange is 12 miles . T+l minute k5 seconds , everything is 
still looking good. Twenty miles downrange. Looks good for 
a booster engine cutoff. BECO or booster engine cutoff has 
been confirmed, now the 1+7,000 pound thrust sustainer engine 
will push the Agena* to near insertion speed, where upon the 
Agena propulsion system will place the Agena into orbit. This 
Atlas Launch Vehicle was the same type of Launch Vehicle which 
orbited four men and one somewhat apprehensive chimpanzee named 



GEMINI 12, MISSION COMMENTARY, NOVEMBER 11, I966, 1:06 pm CST 

TAPE 23, 
PAGE 3 

EnQs during project Mercury. We are now at 2 minutes 50 seconds 
after Agena liftoff. Some 105 miles downrange, 56.6 miles 
altitude . We are coming up now on 50 percent of the required 
velocity for insertion; lU3 mi^s downrange, 70 miles altitude. 
Mark, 50 percent required velocity for' insertion. 179 miles 
downrange, 77-9 miles altitude, - 200 miles downrange. All 
incoming data looks good according to the Flight Dynamics 
Officer. 260 miles downrange, 96 miles in altitude. Four 
minutes 29 seconds after liftoff. Flight Dynamics advises 
the Flight Director that we are looking good for sustainer 
engine cutoff. We've had confirmation of sustainer engine 
cutoff. Flight Director Glynn Lunney's comment here was that 
this was a great Atlas. Separation of the Agena from the 
Atlas has been confirmed. We are now klO miles downrange, 
12U.5 nautical miles in altitude. (PAUSE) 
U95 miles downrange, 136 miles in altitude. We have had 
the secondary propulsion system initiated. The primary 
propulsion system should ignite in a few moments. We've had 
Confirmation of primary propulsion system ignition. Speed 
looks good we are now 592 miles downrange at an altitude of 
11+7.8. We've also had confirmation that the shroud covering 
the docking collar in the upper end of the Agena has been 
separated successfully. Guidance looks good for insertion 
into orbit. This primary propulsion system engine has a 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 1:06 pm CST 

TAPE 23, 
PAGE k 

thrust of some 16,000 pounds. Seven minutes and 10 seconds 
after launch. We are now at some 75 percent of the required 
velocity for insertion at 756 miles downrange, 157 nautical 
miles altitude. 810 miles downrange. Flight Dynamics says 
all data coming in looks real good to him. 



END OF TAPE 



GEMINI 12 MISJ3I0N COMMENTARY, ll/ll/66, 1:16 P. M. CST 

Tape 2k, Page 1 

Eight minutes and ten seconds. 910 nautical miles down- 
range, 160.9 nautical miles altitude. Apparently the Agena is 
right down the slot on the desired azimuth and the crossrange 
errors are quite negligible. The intended launch azimuth of 
the Agena was 83.32 degrees which is slightly north of east. 
Coming up on Primary Propulsion System cutoff. We're now a 
thousand and 60 miles downrange. We've had Primary Propulsion * 
System cutoff. Flight Dynamics Officer advises Flight Director, 
Glynn Lunney, that they've had a good cutoff and everything 
looks good. We've had the antenna boom extended on the Agena. 
We're now at ten minutes and six seconds after Agena launch. 
Apparently we've got a perfect bird here in the Agena target 
and we're now standing at T-8U minutes and hj seconds in the 
Gemini count. This is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 1:25 p.m. CST Tape 25 

Page 1 



This is Mission Control Houston. T-77 minutes and 58 seconds 
into the Gemini count and T+17 minutes and 9 seconds after Agena 
liftoff. All of the events in the Agena launch were on schedule 
and comments around the mission control room here were "beautiful. 
Apparently it was a very perfect launch, our initial tracking 
data through the Antiqua station of the Eastern Test Range, show 
that our orhit stands with a perigee of 159 nautical miles and 
apogee at 163 nautical miles. We switch back now to Launch Control 
at the Cape. 

This is Gemini Launch Control. Now at T-77 minutes, 17 seconds 
and counting. During this excellent performance of the Atlas/Agena 
during its powered flight, Astronauts Jim Lovell and Buzz Aldrin 
have been busy at work in the spacecraft doing some of their 
preliminary checks. However, they were kept abreast of the major 
highlights and were told that we appear to have a very good Agena 
in orbit for them. During this period, after the hatches were 
closed, the two pilots proceeded to purge the spacecraft completely 
to its 100 percent oxygen atmosphere and did a series of other 
communication tests prior to the test that they are involved in 
right now. Both of them, and that's a final check of the switches 
in the spacecraft. A complete checklist of the switches to ensure 
that all of them are in the proper positions. Both Lovell and 
Aldrin, are reporting to the spacecraft test conductor on the 
location of all their switches. Our countdown continues to go 
well with the Gemini Launch Vehicle. The primary work during these 



GEMINI 12 MISSION CCM4ENTARY, H/ll/66, 1:25 p.m. CST Tape 25 

Page 2 



last ten minutes or so; however, has been primarily concerned with 
the spacecraft and the work of Aldrin and Lovell. About ten 
minutes from this time, the remaining crewmen who are in the 
White Room at the 100 foot level will depart leaving the space- 
craft area free and ready a short time thereafter to start lowering 
the erecter at Complex 19 . All systems still going well with the 
Gemini countdown. T-75 minutes, 1+9 seconds and counting. This 
is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 1:33 P- M. CST 

Tape 26, Page 1 



This is Gemini Launch Control. We're at T-70 minutes, 

one second and counting. All systems still going well with 

our Gemini countdown at this time. Astronauts Jim Lovell and 

Buzz Aldrln are participating in further tests with the Gemini 

spacecraft in the blockhouse at Complex 19. In the meantime, 

the crew that has helped support the two pilots during the final 

phases of the preparations now have cleared from the so-called 

White Room at the 100- foot level. Lovell and Aldrin now alone 

in their spacecraft aboard the 100-foot level and we are starting 
'erector 

to gear up for the" re -i/ro lowering which is due in about the 

55 minute mark in the count some lb minutes from now. However, 

with the count going very well it is possible this key event 

might occur a little bit earlier. We'll stand by to get further 

word from the blockhouse. In the meantime, the GE Burroughs 

Radio Command Guidance System which guided the Atlas/ Agena into 

- the Agena - into its excellent orbit now has switched tradeB, 

if you will, back to support the Gemini Launch Vehicle. We have 

the same Radio Command Guidance System, the same techniques used 

to guide the Gemini Launch Vehicle on its powered phase of flight. 

Coming up shortly will be a key guidance command test with the 
' will 

Gemini Launch Vehicle which \/>." simulate the complete ascent run 
of the launch vehicle working with the Guidance System, the two 
on the pad and the Launch Vehicle itself. All systems looking 
good. We are standing by for the next major event, which will 



GEMINI 12 MISSION COMMENTARY, 11/11/66, 1:33 P. M. 

Tape 26, Page 2 



erector 

be word on the ^ .rj lowering. T-68 minutes, 30 seconds and 
counting. This is Gemini Launch Control. 



END Of TAPE 



GEMINI 12 MISSION COMMENTARY , 11/11/66, l:UO PM CST TAPE 27 PAGE. 1 
This is Mission Control Houston at T-62 minutes 57 seconds befo~e 
Gemini lift-off. In our status of the world wide tracking 
network, we have one minor problem with radar system at 
Bermuda. However they can work the mission. Meanwhile, out 
at Canton Island, the high frequency transmitter apparently 
is not repairable in the near future. They have an estimated 
time of repair of 22 November. However this is not a mandatory 
item for the mission and will cause no problems. The Agena 
Target Vehicle at the present time is over the South Central 
portion of the continent of Africa and will come over the 
Carnarvon, Australia tracking station in approximately 19 min- 
utes. We will switch now to launch control at the Cape. 

This is Gemini Launch Control at the Cape. 52 minutes and 
counting. All systems still looking good. We have just 
gone through a status check at the blockhouse to determine 
how we stand as far as lowering the erector is concerned 
and all the crewmembers -in the blockhouse reported they were 
ready for it. It is due about 5 minutes from this time. 
Astronauts Jim Lovell and Buzz Aldrin have been notified 
to expect the 138-foot erector will be coming down shortly. 
Just prior to this event we have opened the prevalves in 
the first stage of the Gemini Launch Vehicle. This permits 
the oxidizer or some oxidizer to flow into a stand pipe in 
the first stage system. The purpose of this stand pipe to 



GEMINI 12 MISSION COMMENTARY, ll/ 11/66, l:hO PM CST TAPE 27 

PAGE 2 

help supress possible vibrations that we could get in 
flight. This is the so-called "pogo" effect and this 
particular test has already been completed. We are now 
at T-6l minutes 8 seconds and counting. This is Gemini 
Launch Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, l:h5 p.m. CST Tape 28 

Page 1 



This is Gemini Launch Control. T-57 minutes, 48 seconds and 
counting. A matter of about 30 seconds ago, we received a report 
from the blockhouse, that the erector was starting to move. It is 
in the process of now being lowered. This is done through a winch 
system at the complex that eases the erector down into its place 
for launch. This will take about eight minutes. The astronauts 
were appraised of it just prior to the first move of the erecter 
and we are still in a "Go" Condition as far as the mission is 
concerned at this time. We are now aiming for a liftoff time for 
the Gemini Launch Vehicle — that is a liftoff time of 46 minutes 
and 30 seconds after the hour. That is at 3:46 and 30 seconds, 
the Gemini liftoff. This should give us a hold time at the T-3 
minute mark of about three minutes and 27 seconds. Once again, 
to repeat the planned launch time, 3:46 and 30 seconds p.m., EST. 
We are now at T-56 minutes, 43 seconds, as the erecter continues 
to come down. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, U/ll/66, 1:5^ P. M. CST 

Tape 29, Page 1 



This is Mission Control Houston. We're now at T-kQ minutes, 
57 seconds and counting on the Gemini count. Meanwhile, the 
Agena target vehicle is some h6 minutes and 13 seconds en route. 
It will come over the Carnarvon, Australia tracking station in 
approximately four minutes from now. Apparently, everything 
looks, still looks real good with the Agena target vehicle. For 
the progress of the Gemini count we switch now to Launch Control 
at the Cape. 

Gemini Launch Control at the Cape. We're now at T-48 minutes 
22 seconds and counting. All still proceeding very well, with the 
Gemini countdown. Astronauts Jim Lovell and Buzz Aldrin still 
making final checks in the spacecraft. They will start making 
some preparations shortly for a static test of the spacecraft 
Propulsion System which will come about 15 minutes or so from 
this time. In the blockhouse itself the crew continues to moni- 
tor various major functions particularly concerned with guidance 
at this point but all is still going well. We also have reaffir- 
mation of a go from the weatherman with a weather forecast here 
at the Cape of partly cloudy conditions, winds from the southeast 
at ten knots and an offshore sea state at the Cape of about two 
to three feet and an expected temperature of about 80 degrees. 
All systems still going well. T-U7 minutes, 29 seconds and 
counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 2:02 pm CST 

TAPE 30, 
PAGE 1 

This is Gemini Launch Control at T-Ul minutes and counting, 

T-kl. We are still proceeding and we still have a good 

countdown at this time. The backup pilots' for Gemini 12, 

Astronauts' Gordon Cooper and Gene Cernan, now that they 

have left Complex 19 are here in the Mission Control 

Center where they will monitor the rest of the countdown 

and the early stages of actual flight. At Complex 19 

itself the count still going well. Coming up shortly will 

be the programmed sequence test, one of the final checks 

of the primary and secondary flight controls for both 

the spacecraft and the Gemini Launch Vehicle. Also tied in 

on the test will be the crewmen in the blockhouse. During 

this test we actually do swivel or gimbal those engines 

in the Gemini Launch Vehicle in response to commands from 

the Guidance System. The astronauts are getting up in the 

spacecraft for a static test of the spacecraft propulsion 

system, where we actually fire the small thrusters on the 

spacecraft. That will be coming up about 15 minutes from 

this time, but they are going through some preliminary work 

in preparation for it at this point. We are now at T-39 minutes 

50 seconds and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 2:08 p.m. CST Tape 31 

Page 1 



This is Mission Control, Houston. At minutes and 57 
seconds in the Gemini 12 count. Meanwhile, the Agena target 
vehicle, now over the Carnarvon, Australia tracking station, has 
been in flight one hour and 16 seconds. The weather picture 
around the world shows that it is pretty well satisfactory for 
the first couple of days of the Gemini 12 mission. Across 
the Atlantic, during the first pass, we'll encounter extensive 
cloudiness and showers between the latitudes 50 and 60 degrees. 
In the mid-Pacific landing zone, northeast of Honolulu, the 
skies are partly cloudy and winds east 15 knots and seas h to 
5 feet. In the west Pacific landing zone southwest of Tokyo, 
partly cloudy skies, winds northeast at 10 knots and seas 3 feet. 
The Eastern Atlantic landing Bone, which is some 300 miles west 
of the Cape Verde Islands, partly cloudy skies, winds are out of 
the northeast at 15 to 20 knots, and seas h to 5 feet. In the 
primary landing zone in the western Atlantic, which is some 300 
miles east of Miami, partly cloudy skies, winds north to northeast 
at 15 to 20 knots, seas are running k to 6 feet with heavy swells. 
At T-33 minutes, 25 seconds, let's switch now to Launch Control at 
the Cape. 

This is Gemini Launch Control. And our checkout continues at 
Complex 19, still going well as it has all this afternoon and all 
this morning. sittce the count actually picked up. There have been 
no problems thus far in the general countdown or specifically with 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 2:08 p.m. CST Tape 31 

Page 2 



the Gemini spacecraft itself. Just as we passed the 35 minute 
mark in the countdown, the master op'erations control system came 
into play. This is the automatic sequencer at Complex 19. 
However, it is not fully automatic until we get down to the T-5 
mark in the count. From T-5 minutes down, it does become a 
complete, automatic sequence on the final checkout and leading up 
to the ignition of the Gemini Launch Vehicle. Prior to that time, 
the sequencer commands some 10 actions and monitors the performance 
of some 25 other functions as we continue to countdown. In the 
Gemini 12 spacecraft, Astronauts Jim Lovell and Buzz Aldrin con- 
tinue to make their preparations for the so-called static fire of 
the spacecraft propulsion system. That is the orbit attitude 
maneuvering system which is used to power the spacecraft in orbit. 
We have some eight 25-pound thrusters that ring the adapter section 
of the spacecraft and we will test them in a matter of some five 
or ten minutes from this time. We are a little bit ahead on our 
countdown in certain activities at this time, mainly because the 
count has been going so well. Now at T-31 minutes, U9 seconds 
and counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 2:15 PM CST TAPE 32 

PAGE 1 

This is Gemini Launch Control. T-28 minutes and counting. 
T-28. Our propulsion test with the Gemini spacecraft is 
in progress at Launch Complex 19- We are testing the 
small 25 pound thrusters that ring the adapter section 
of the Gemini spacecraft. We tested out - test out these 
thrusters in the modes in which they would operate in 
orbit. Those are the modes that are used to maneuver 
the spacecraft in orbit. The sequence goes as follows: 
We apply yaw left, pitch down, yaw right, pitch up, yaw 
left. This is a good test of these thrusters. The test 
is in progress at this time. It is being monitored by 
Astronaut Jim Lovell and Buzz Aldrin in the spacecraft 
and the crew in the blockhouse. In the meantime, with 
the Gemini Launch Vehicle itself, we are making one of 
the final checks, the malfunction detection system of the 
vehicle itself. All is going well with the test at this 
time. Now coming up on T-27 minutes and counting. This 
is Gemini Launch Control. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 11, 1966, 2:23 pm CST 

TAPE 33, 
PAGE 1 

This is Gemini Launch Control, T-20 minutes and counting, T-20. 
All still going well at this point. We have completed our test- 
ing of the Orbit Attitude Maneuvering System, the propulsion 
system of the Gemini 12 Spacecraft and it appears to be very 
satisfactory. In the meantime the Flight Director Mr. Glynn 
Lunney has informed the Cape of the time he wants the Gemini 
Launch Vehicle to ignite. That is T-0 in the countdown and 
the time he gave is U6 minutes and 30 seconds after the 
hour. We will get liftoff about 3.2 seconds or so after 
we get the ignition. So our liftoff will be 3 seconds after 
46 - 30 seconds after the hour, which will mean a hold time 
at the T-3 minute mark in the count of about 3 and one-half 
minutes. To repeat, we will have a built in hold at the 
T-3 minute mark in the count. The duration of the hold about 
3-1/2 minutes. Aiming at an ignition time or T-0 of the 
Gemini Launch Vehicle at U6 minutes and 30 seconds after the 
hour. Our window in which to launch, that is, to make a 
third or fourth revolution rendezvous will end at k8 minutes 
and 53 seconds after the hour. So our complete window goes 
from k6 minutes and 30 seconds after the hour to k8 minutes 
and 53 seconds after the hour. Our checks are continuing 
in the blockhouse at Complex 19, they all appear to still be 
going well at this time. Now at T-l8 minutes 2k seconds and 
counting. This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/11/66, 2:29 P. M. CST 

Tape S'+j Page 1 



This is Gemini Launch Control, T-11+ minutes and counting. 
T-lU. With the Agena spacecraft in orbit now just travelling 
over the earth south of Hawaii, we are continuing our count 
here at Complex 19. All systems still are go. The Launch 
Vehicle Test Conductors just made a status check with all 
the various recovery elements, the recovery forces that are 
in the immediate Cape area, and these Department of Defense 
forces primarily all report that they are ready for the mission. 
Coming up will be a data link test of the Guidance System of 
the Gemini Launch Vehicle. This is between the ground guidance 
and the vehicle itself. We also have the launch vehicle Test 
Conductor confirm that we will have a built in hold at the 
T-3 minute mark in the count. The exact time of the hold 
coincided with the launch will be three minutes and 29 seconds. 
The countdown then will be resumed. We'll be aiming for a 
T-0 or ignition of the Gemini Launch Vehicle at U-S minutes and 
30 seconds after the hour. Liftoff will come about three sec- 
onds thereafter. Now T-12 minutes, 50 seconds and counting. 
This is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 2:3^ PM CST TAPE 35 

PAGE 1 

This is Gemini Launch Control at T-9 minutes and counting. 

T-9 and all aspects of the mission still looking good at 

this time. The Agena 12 spacecraft in orbit now southeast 

of Hawaii as it starts to make its approach to the west coast 

of the United States. Our latest ephemeral data, that is the 

apogee and perigee of the Agena spacecraft gives us the 

following numbers: an orbit of 163.6 by 159 nautical miles. 

Repeat: 163. 6 by 159 nautical miles. A period of 9O.U8 

minutes, 90.48 minutes. And the Agena has an inertial 

velocity of 17 29U statute miles per hour. This data will 

be applied here at the Cape and from the computers in 

Houston to give us the proper numbers for the guidance 

system, the Gemini Launch Vehicle and the spacecraft 

computer. The final update will come just after we resume 

our countdown after the 3-minute hold. Under this launch 

plan we will be launching on a flight azimuth of 100.6 degrees. 

At this point in the countdown, all still going w.ell. 

Astronauts Jim Lovell and Buzz Aldrin has been advised to 

close in and lock their visors. They have repo -ted this 

is complete. The spacecraft test conductor informed them 

that they were all set and wished them a good flight. Both 

pilots expressed their thanks. We are now at T-7 minutes 

26 seconds and counting. We will have a built-in hold, a 

planned built-in hold at the 3 minute mark in the hold. We 

will hold for 3 minutes and 29 seconds in order coincide 

our launch with the now orbiting Agena. This is Gemini Launch 

Control. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 2:37 p.m. CST Tape 36 

Page 1 



This is Gemini Launch Contfcol at T-6 minutes and counting. 
All systems still going well. We'll be coming up in about three 
minutes into our builtin hold. Jfil major highlight occurring at 
the blockhouse at this time, a final status check of all aspects 
of the mission. The crewmen are now reporting back "Go" as 
their various systems are called out. All systems still functioning 
normally at this time. The Gemini 12 spacecraft now is on complete 
internal power. About two minutes ago it went on the power of its 
fuel cell system within the spacecraft itself. The final go will 
be given by Mission Director Bill Schneider and his turn will be 
the last one after he hears a report from all the other elements. 
A status report is still in effect at this time and all are report- 
ing go. Now T-5 minutes, eight seconds and counting. This is 
Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 2:UO p.m. CST Tape 37 

Page 1 



This is Gemini Launch Control. We are about to go into 
our hold, just a second away. Mark. T-3 minutes and holding. 
T-3 minutes and holding. This hold will last three minutes and 
29 seconds. We'll resume our countdown at k3 minutes and 30 
seconds after the hour aiming for a T-0 or ignition of the 
Gemini Launch Vehicle at U6 minutes and 30 seconds after the 
hour. This will coincide our launch with the orbiting Agena 
spacecraft in order to help us to accomplish the planned third 
revolution rendezvous between the Gemini 12 spacecraft with 
Astronauts Jim Lovell and Buzz Aldrin and the orbiting Agena. 
We are now in the hold and the crew in the blockhouse as well 
as the crew in Houston are monitoring the various systems. All 
systems are still go at this time. Holding at T-3 minutes, this 
is Gemini Launch Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11-11-66 2«U3 P.M. CST Tape 38 

Page 1 



This is Gemini launch control. .. .we are about to resume our 
countdown. . .mark T-3 minutes and counting T-3. We are on a 
complete automatic sequence at launch complex 19 at this time. 
Astronauts Jim Lovell and "Buzz" Aldrin have made final co- 
munieations checks. We have also received a clearance from 
Air Force Eastern Test range to launch. As reported earlier 
we'll be launching on a flight azmith of 100 point 6 degrees. 
T-2 minutes 35 seconds and counting. This is Gemini Launch 
Control. 



END OP TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 2: 1+5 p.m. CST 

TAPE 39, 
PAGE 1 

Gemini Launch Control at T-2 minutes and counting, T-2. 
All systems still go with the Gemini Launch Vehicle and 
spacecraft at this time. The Launch Vehicle and the 
spacecraft have received the proper updates, that is, 



the proper parameters for fliljjht. These were the final 

versions fed to the Launch Vehicle and spacecraft just 
after we resumed our countdown on the T-3. Coming up at 



Launch Vehicle will go on complete internal power. That 
is it's own battery power. Our countdown will continue 
down automatically to the zero mark when those two engines 
in the first stage will ignite, when they build up some 
77 percent thrust the vehicle will be released for flight. 
They'll have a total of some U 30, 000 pounds of thrust with 
the Launch Vehicle on the pad. Now at T-l minute and 9 seconds 
and counting. Another key test during the final phases that was 
just completed was a test -a final test of those engines in 
the Guidance System, and as we actually gimbaled those engines 
a final test of swinging them to insure they responded to the 
Guidance System. Now coming up on 50 seconds, MARK T-50 seconds 
and counting. The crew in the blockhouse now monitoring their 
consoles during these final phases. All reports come back good 
at T-Uo seconds and counting. T-35, the pre valve has been opened 




this poinf; in just a matter of seconds from now, the 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 2:1*5 pm CST 

TAPE 39, 
PAGE 2 

to permit the prope Hants to come down toward the chamber. 
There is only one valve which will open at zero. T-25 
seconds and counting. T-20 T-15 seconds and counting. 
It is quite in the blockhouse as we continue to monitor 
at 10, 9, 8, 7, 6, 5, h, 3, 2, 1, 0. We have ignition. 

And we have liftoff. Liftoff is approximately minutes 

36 seconds past the hour. The roll program has gone in which 

twist the Launch Vehicle over to a launch azimuth of 

approximately 100.6 degrees. The clocks are in sync, now 

the pitch program has begun. This will pitch the vehicle over 

to horizontal flight in a gradual manner to put it into a 

launch window of some 87 nautical miles high. Let's eavesdrop 

now on the air to ground conversation between the crew of 

Gemini 12 and the Flight Controllers on the ground. 

HOU Mark, 50 seconds. 

SC Ready to go. 

HOU Roger, roger. You are looking good. 

SC Houston, 12. Pressure holding at 5.75. 

HOU ' Roger 

Plot looks real good here in Mission Control. We are approxi- 
mately 7 miles downrange and 10 miles in altitude. 
HOU Mark, 1 plus Uo. 

SC 02 
HOU Roger 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 2:45 p.m. CST 



TAPE 39, 
PAGE 3 



Flight Dynamics says all data looks good on the Gemini 12 
launch. Mission Control is go for staging. 



SC All systems go for staging. 

HOU Roger you are go for staging on the ground. 

Staging will occur at 2 plus 3^. 

SC DCS updated 

HOU Roger, DCS 

SC (garbled) 

Initial steering on the second stage of the Gemini Launch 

Vehicle looks good. A perfect staging. 

HOU You gbt good second stage thrust 12. 

SC Roger . 

Flight Dynamics says it is right down the middle. 
SC Houston that delta p lights out now. 

HOU Roger. You are steering right down the 

(garble) 

SC Man this is a pretty good visual simulation 

here. 

HOU How do you like that? 



We are now some 193 miles downrange at an altitude of 70.4 
nautical miles. Flight Director Glynn Lunney is polling the 
various positions here in the Mission Control Center. Every- 
body says go. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966 , 2:U5 pm CST 

TAPE 39, 
PAGE k 

SC Houston, Gemini 12 (garbled) 

HOU Roger, you. are go here on the ground. 

The plots in the - the trajectory plotboards on the front of 
Mission Control here are following almost on the money. Even 
better tHan simulations. Coming up on point 8, that is, 
when 80 percent of the required velocity for insertion .... 



HOU Standby for point 8, 12. 

SC Roger 

HOU Mark, point 8. 

SC Roger . 

Coming up on second stage engine cutoff. 

SC SECO 

HOU Roger, SECdr- 

HOU Roger, 12, you are go for IVAR 

SC (garbled) 70U 

HOU You are go. 

SC (garbled) 00032 

HOU Roger. 

SC Address 9U, we used plus OOOlU 

HOU Copy 



We axe now at 6 minutes ¥*• seconds after liftoff. 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 1}., 1966 , 2'M pm CST 

TAPE 39, 
PAGE 5 

SC Bearing (garbled) 28 forward, 8 left. 

HOU Roger understand 2k forward, 8 left. Is that 

correct? 
SC 28 forward. 

HOU 28 forward, roger copy. 

The reference to 28 feet per second forward refers to the 
so called IVAR, or Insertion Velocity Adjustment Routine. 
Wherein the crew of the spacecraft will tune up the orbit 
after a second stage engine cutoff to take out any small 
under speed quantities in the launch vehicle. IVAR is 
another one of the many acronyms .in the space business. 
However, these acronyms are quite accurate and make for a 
very concise conversation on the air to ground loops and 
other conversations here in the Control Center. We are now 
at 7 minutes 53 seconds after liftoff. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/11/66, 2:55 P. M. CST 

Tape kO, Page 1 



HOU 12, Houston. Nominal one bravo. 

S/C Roger, Houston. 

Not much conversation between Gemini 12 and the ground at 
the present time. We're waiting for initial measurements on 
the Gemini 12 "s orbit. All the data incoming to Mission Control 
looks very good. This is Gemini Control Houston at nine minutes 
48 seconds after liftoff. 

HOU 12, Houston. You're in a 8? by 152. 

12, Houston. You're in a &f by 152. 

Now one minute to LOS. 
We're doming up on Loss of Signal at the Antigua station 
in the Eastern Test Range. As you heard on the air-to-ground 
the present measurements of the Gemini 12 orbit is 87 nautical 
miles perigee with a 152 nautical mile apogee. This is Mission 
Control at 11 minutes, 7 seconds after liftoff. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 3:00 PM CST TAPE Ul 

PAGE 1 

This is Mission Control Houston, 13 minutes 59 seconds after 
lift-off. Gemini 12 is well on its way into its ^-day mission 
the last of the Gemini Program. The official lift-off time 
was k6 minutes 33 seconds past the hour. We will now play 
back the taped voice communication between the Flight crew 
and the ground controllers during the launch phase. 



10-9-8-7-6-5-^-3-2-1 

ignition. Lift-off. 
S/C Roll program. 

FLIGHT Roger, roll. 

S/C Pitch program. 

FLIGHT Roger, the pitch. (PAUSE) Mark 50 seconds. 

S/C 

FLIGHT Roser, roger, you are looking good. 

S/C This is 12 here. Gemini pressure holding 

5.75.... 

FLIGHT Roger. 201*633. Mark 1 plus UO. 

S/C Mode 2. 

FLIGHT Roger . 

s/c 

FLIGHT Roger. 

S/C 12. Go for staging. 

FLIGHT Roger, you are go for staging on the ground. 

S/C DCS update in. 

FLIGHT Roger, DCS. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 3:00 PM CST TAPE kl 



PAGE 2 

S/C Okay. 

FLIGHT You are looking good here 12. 

S/C Lights... Gemini needles are going out nicely. 

FLIGHT Roger. You got good second stage thrust off. 

S/C Roger. All of them. Houston that delta P 

light is out now. 
FLIGHT Roger, copy. You are steer in? right down the 

pipe. 

S/C Man, this is a pretty good visual simulation. 

FLLGHT How do you like that? 

S/C 

FLIGHT Roger, you are go here on the ground. 



This is Mission Control Houston. We are now at 19 minutes 
31 minutes after lift-off in the Mission of Gemini 12. We 
are standing by now for our acquisition at the Ascension Island 
tracking station in the South Atlantic. This will be a voice 
remoted conversation, that is, if there is any conversation 
between the crew of Gemini 12 and the Spacecraft communicator, 
Pete Conrad, here in the Control Center. 

No conversation as yet. We are still standing by. Pete Conrad 
is putting in call now. Let's listen in. 
FLIGHT Gemini 12, Houston. 

Gemini 12, Houston Cap Com. Over. 

Gemini 12, Houston. 



GEMINI 12 MISSION COMMENTARY , ll/n/66, 3:00 PM CST TAPE kl 

PAGE 3 

FLIGHT Gemini 12, Houston. 

No response as yet from the crew of Gemini 12. But we will 
stand by. 

FLIGHT Gemini 12, Houston. Gemini 12, Gemini 12. 

Houston on UHF. Over. 
We have only got 3 minutes left in this pass over the Ascent ion 
station. Pete Conrad meanwhile, periodically puts in calls 
to Gemini 12. We are still standing by. for any response. 
FLIGHT 12, Houston. Give me a call on UHF -2 if 

you are reading me. Gemini 12 Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, U/ll/66, 3:10 P. M. CST 

Tape k2 t Page 1 



HOU Gemini 12, Houston. 

This is Mission Control again. Apparently, the contact 
between the spacecraft through the Ascension station is unsuc- 
cessful over VHP or UHF. We're one minute, a little less than 
one minute, to Loss of Signal, at Ascension. Perhaps we'll be 
more successful through the Tananarive station later on. This 
will come at 3k minutes past the hour. Among the guests 
watching the liftoff from Mission Control here in the viewing 
room were the following: Ambassador Llewelyn Thompson who is 
Ambassador Designate to the Soviet Union, Ambassador George V. 
Allen, Director of the Foreign Service Institute, and a number 
of other State Department officials. At T plus 25 minutes, 
32 seconds this is Mission Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 3:20 p.m. CST Tape k3 

Page 1 

This is Mission Control, Houston, at 3*+ minutes and 3 seconds 
after liftoff. At about this time, we should be acquiring the 
spacecraft from the Tananarive voice remoting station on the 
island of Madagascar. We are standing by now for any air-to- 
ground conversation between the crew of Gemini 12 and Pete 
Conrad here in Mission Control Houston. 
HOU Tananarive, Houston. 

Tananarive, Houston. 
TAN Houston, Tananarive, go ahead. 

HOU Tananarive, Houston. Go remote UHF. 

TAN Roger. Tananarive, remote. 

HOU Gemini 12, Gemini 12, Houston Cap Com through 

Tananarive, go reentry antenna, how do you read? 

S/C This is 12. Read you loud and clear, now, Houston 

over . 

HOU Roger. Did you have a comp problem or was it us? 

S/C We didn't locate any problem here. Gtver Ascension, 

we tried — we thought you were broadcasting, but 

we couldn't hear a thing. 
HOU Okay, well we had a low pass at Ascension. Are you 

ready to copy your NC-1? 
S/C Roger, ready to copy. We are on reentry antenna 

right now. We first heard your transmission on 

adapter antenna. Do you want us to stay in reentry? 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 3:20 p.m. CST Tape 1+3 

Page 2 



HOU Yes, let me get the NC-1 to you and then we'll 

play with your radios. 
S/C Go ahead, ready to copy. 

HOU Roger. NC-1 - 1+9 + 1+0, Delta V - 66.6, Delta T - 

1 + 28, yaw - zero, pitch - zero. Address 25 - 
00666; address 26 - address 27 - all zeros. 
Thrusters aft , -maneuver posigrade. 

S/C Roger, got it. Do you want to repeat GETB? ... 

+ 1+0, Delta V - 66.6 feet per second, time « 
1+28 seconds, yaw zero, pitch zero, address 
25 - 00666, ... 

HOU Okay that burn time was 1+9 + 1+0, I didn't get your 

copy, but I think you have it right. 

S/C Roger, time =1+9 +1+0. 

HOU Roger, your orbit is 87 by ll+6. 

S/C Roger, understand the orbit ... by ll+6. 

HOU Okay, now go back to adapter antenna there and 

give me a call please. 

S/C Houston, Gemini 12 on the adapter antenna, do you 

read? 

HOU Okay, I read,' you loud and clear. I think our 

problem was you low pass at Ascension. You 
can. remaint on adapter antenna and how's everything 
going? 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 3:20 p.m. CST Tape 1*3 

Page 3 



S/C Roger, one small anomoly on the liftoff. Our secondary 

number two engine when we went up to about ... 5000. 
HOU Okay. 

S/C Can't we go on up to a higher level during the high 

Gf 

HOU I didn't copy that, would you say it again please? 

S/C ... (garbled) 

HOU You are breaking up pretty badly. You can pass it 

to Carnarvon. 

CBk) Yeah, Gene. That's secondaryOOg is closed and the 

other secondary Og is open for a flight burn. 
HOU Okay. 

This is Mission Control Houston. Apparently there will be no 
more con — no further conversation between the Mission Control 
here and the crew of Gemini 12 through the Tananarive station. The 
numbers you heard being passed to the crew were for the first 
translation maneuver, the so-called phase adjust maneuver, which 
will occur at U9 minutes, UO seconds after liftoff, which will 
be approximately one minute from now. As you were — ten minutes 
from now. This will be a 66.6 feet per second posigrade burn. 
It will raise the perigee from the present 87 nautical miles to 
119 nautical miles . For each two feet of energy added to an 
orbit, the orbit will be changed l80 degrees around by apprdaci- 
mately one mile, from where the maneuver was made. At kO minutes 
and 13 seconds after liftoff, this is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11-11-66 Tape kk 3:36 P.M. Page 1 

This is Mission Control Houston 1+9 minutes 53 seconds after 
liftoff. The spacecraft is now in electronic contact with 
the Carnarvon Australia tracking station and the spacecraft 
communicator at Carnarvon has confirmed that they have begun 
the first translation burn for the later rendezvous with the 
Agena target vehicle. We are standing by for Borne conversa- 
tion. The telemetry to the ground has indicated that the 
burn is now under way. This will be the 66.6 feet per Becond 
posigrade bum using the after firing thrusters on the Gemini 
space craft. Carnarvon has reported C-band track. We'll 
stand by to go live when we have direct conversation between 
the spacecraft communicator and the crew of Gemini XII. A3 
of now there has been no attempt to call the spacecraft. 
Data from the tracking at Carnarvon has begun filter in to 
the Control Center here in Houston. We are still standing by 
for the spacecraft communication communicator at Carnarvon to 
put in a call to the spacecraft. Apparently they don't want 
to begin conversation while the crew is making this first 
burn. Again, this is the first phase adjustment maneuver to 
get the rate of closure between the Gemini XII spacecraft and 
the Agena target vehicle in to their proper relationship. 
The next maneuver is at approximately one hours and kk minutes 
after liftoff, the so-called corrective combination maneuver. 
Carnarvon spacecraft communicator has just raised the crew 
let's join the conversation... 

CRO Okay standing by for your go for 15 dash 1. 



GEMINI 12 MISSION COMMENTARY 11-11-66 Tape kk 3:36 P.M. CST 

Page 2 



S/C Roger Gemini XII 

CRO Go ahead... 

S/C Would you report mark command at apparently our 

time? 

CRO Okay, we'll do that. 

S/C Gemini XII we'll go 

CfiO Roger, radiator is "go"... all systems are "go" 

here on the ground. You're go for 15 dash 1 
Alpha. I give you mark fES. f at 5k minutes. 

S/C Roger. 

CRO 5^321 mark.. this iB 5^ minutes. 

S/C Roger (garbled) 

CRO Say again 12. 

S/C Roger, do you have some information on an out-of- 

plane burn? 

CRO That's affirmative. You are "go" for your onboard 

solution for the plane change. 
S/C Roger 

CRO Okay, would you give me a PQI please. 

S/C Roger PQI reading 85 percent. 

CRO Roger. 

HOU Carnarvon Plight . Gemini main OBC ; please . 

Carnarvon from flight . . Gemini main OBC please . 

Carnarvon -from flight . . . 
CRO Go ahead flight Carnarvon.. 

HOU Did you copy that send us a couple of Gemini mains 

and some OBCs .... 



GEMINI 12 MISSION COMMENTARY 11-11-66 Tape kk 3:36 p,m. CST 

Page 3 

HOU Carnarvon from flight. . .Did you copy? 

This is Mission Control Houston again. Spacecraft Gemini 12 
is still over the Carnarvon Australia tracking station but 
the conversation on air to ground is relatively quiet now. 
You heard the PQI readout propellant quantity remaining. 
They now have 85 percent of their onboard thruster propellant 
still in the tanks. Since it is rather quiet pass here, this 
first pass over Carnarvon station we'll switch now to the 
Press Conference at Cape Kennedy. At 56 minutes kO seconds 
after liftoff 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 4:05 p.m. CST Tape 1*5 

Page 1 



This is Mission Control Houston. One hour, 18 minutes and 
20 seconds after liftoff in the flight of Gemini 12. At the 
present time the spacecraft is over the Hawaii tracking station. 
Earlier, it was reported that the Carnarvon, Australia pass was 
completely nominal from all standpoints, systems, and crew. A 
few figures here on heartbeat rates. At one minute after liftoff 
the command pilot rates ranged between 120 and 126 beats per 
minute, and on the pilot, they ranged from 82 to 110. Earlier 
in this pass over Hawaii, the crew reported that there were no 
leftover numbers or residuals on their out-of -plane burn. In 
other words, they burned it right down to the zero point on 
their inertial velocity indicators. We have the tape of the 
early portion of this pass over Hawaii which we will roll now. 

S/C Hawaii, Gemini 12. Just completed the out-of -plane 



burn and the residuals are nulled. 



HAW 



Roger, thank you. We are going to start an 
check 

accelerometer bias/ at this time. 



S/C 



Roger, understand. We are in prelaunch. 



HAW 



Roger, thank you. 



S/C 



Hawaii, this is 12. We are in the process of 



rotating back to zero, zero, zero. We are going 



to have to stop the rotation here shortly. 



HAW 



Roger. As soon as you get the zero down, would 



you let me know" and we'll start the accelerometer 



bias check at that time? 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, U:05 p.m. CST Tape 1+5 

Page 2 



S/C Roger . 

Roger, go ahead. 
HAW Roger, 12. 

S/C Hawaii, 12. 

HAW 12, Hawaii. 

S/C Roger. How much longer will this check go? 

HAW We are just about to complete it here. 

HOU After your next summary, we're satisfied, Hawaii. 

HAW 12, Hawaii. That completes the accelerameter 

bias check. 

S/C Roger, thank you. We're still yawing up somewhat. 

HAW Roger. 

We're showing him rolled over to about looks 
like 60 degrees and pitched up to about 50 degrees 
there . 

HOU Roger. 

HAW And for the yawing, he's correcting it now. 

HOU Rog. 

HAW 12, Hawaii. One minute to our LOS. 

S/C Roger, Hawaii. 

HOU And we'd like a Gemini LOS main please, Hawaii. 

HAW Wilcow . 

Looks like we've had LOS of the Agena. 
HOU Roger. 



GEMINI 12 MI8SI0N COMENTARY, 11/11/66, k:05 p.m. CBT Tape 45 

Page 3 



HAW And we have a breakup with Gemini. 

HOU Roger. 

HAW Cryo 0 g tank pressure is going down, its right 

around 700 or maybe slightly under. They may 
have neglected to turn the heater on. 

HOU Okay, we'll take a look at that when we come up. 

HAW Roger. 



This is Mission Control Houston. That winds up the pass 
over Hawaii station. .In approximately two minutes, we'll start 
the first stateside pass over the ~ starting with the California 
station and going down through the stations in the Eastern Test 
Range. At one hour, 2h minutes and 7 seconds after liftoff, this 
is Mission Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, U:12 pm CST 

TAPE U6, 
PAGE 1 

This is Mission Control Houston. Spacecraft Gemini 12 has 
come in contact with the Mission Control Center here through 
the California station. Let's join that conversation now. 
Standing "by for further conversation "between Gemini 12 and 
the ground. 

Guymas remote, California local. 
CAL California is local 

This is Mission Control again. Let us back track a bit for 
the first portion of the stateside pass and get the first 
Uo seconds of contact between the California station and 
Gemini 12. 



H0U 002 pressure and we're standing by. 

We'll pass you the maneuvers when we get 
them. 

SC Roger. Thank you, we're reading 550 on 



cryo 002? we'll 

We have a solid lock on now, first range 
we're able to read out after the accelerometer 
bias was 235.52 miles. 



HOU Roger. Looks like the radar meets respect. 

SC I guess so. 

HOU 12, Houston, you're accelerometers require 

no update. Everything looks good. 
SC 12, roger. 



That completes the first portion of this pass. We're standing- 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966 U:12 pm CST 

TAEE h6, 
PAGE 2 



by for further communications between Pete Conrad here in 
Mission Control and Gemini 12. 

This is one of the quietest first stateside passes in any- 
mission we've had in quite some time. We! re still standing 
by for conversation between Pete Conrad and the crew of 
Gemini 12. 

Still standing by. Apparently the crew is involved with some 
onboard computations for some' of their later maneuvers toward 
rendezvous with the Agena Target Vehicle. Pete Conrad said 
he is a little hesitant to talk to them at the present time 
but they are still standing by though. Before the state- 
side pass is completed we should have some additional 
conversation . 





Texas remote, Guayfyas local. . 


TEX 


Texas remote 


GYM 


Guaymas local. 


HOU 


12, Houston. 


SC 


Go ahead Houston, 12 here. 


HOU 


Roger would you turn your ATM off. 


SC 


Roger . 


HOU 


Thank you. 


HOU 


12, Houston 


SC 


This is 12 go. 


HOU 


Roger. Your cutoff will be 16 percent 


SC 


Roger, 16 percent to cutoff and 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966 U:12 pm CST 

TAPE 1+6, 
PAGE 3 



we're standing by for our CSI and CDH updates. 
HOU Roger, she's coming to us now. We'll be 

right with you. 
Texas local. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11-11-66 U:22 P.M. CST Tape hi 

PAGE 1 

HOU 12 Houston 

S/C 12 "go" 

HOU Roger, I have CSI ready for you. 

S/C Ready to copy. 

HOU Roger. GETB 01 + hi + 52 Delta V, 7 point 6 

Burn time Delta T 00 + 10 Yaw 10 right P 
pitch 27 up address 2500067 address 2690035 
address 27 90011 thrusters aft posigrade up 
south : 

S/C zero Y at zero one plus kf plus 52 Delta V 
7 point 6, duration 00 + 10 Yaw 10 right 
pitch 27 up, 25 is OOO67, 26 is 90035, 27 is 
90011, aft 

HOU Roger, that's a Charlie on that posigrade up 

and south. 

Roger and I have CDH for you if you are ready 
to copy. 

S/C Roger, go ahead with CDH. 

HOU Roger, GETB 02 + 22 + 5I+, Delta V i+9.9 Delta T 

01 + 06 Yaw 1 right pitch k up address 25 
OOU98 address 26 90035 Address 27 90007 
thrusters aft maneuver is posigrade up south 

S/C Roger, Houston. CDH at 02 + 22 + 5^ Delta V 

U9. 9; durations 01 + 06; yaw 1 right k up; 
25 is OOU98, 26 is 90035 ;27 is 90007 thrusters 



GEMINI 12 MISSION COMMENTARY 11-11-66 k:22 P.M. CST Tape k7 

Page 2 

HOU Roger that's Charlie. 

12 Houston. 12 Houston. 
S/c Houston 12, go ahead 

HOU Roger, the temperature is going up on your 

frog eggs if you can get to the thermal cover 
without interf erring would you put it on, 
please? 

S/C Roger. 

HOU Thank you. And 12 this is Houston, Could 

you give us a report on your left and right 
windows please. 

12 Houston. Could you give us a report on 
your windows when you have a chance please. 

S/C Roger, Pete. . .We got smudging staging 

still there adjusted the covers. ..the windows 
aren't bad' though right now they are pretty 
good. 

HOU Okay, thank you. 

S/C Frog eggs are tucked in nicely. 

HOU Thank you. 

12 Houston. We have about one minute to LOS 
Your Delta H looks like 10 miles. 

S/C Roger. Understand a 10 mile Delta H. 

HOU Roger standing by. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/ll/66, l+:32 p.m. CST Tape k& 

Page 1 



This is Mission Control Houston. One hour, kj minutes and 
11 seconds after liftoff. Apparently we've had loss of signal 
at the Antigua station of the Eastern Test Range. Our next station 
coming up will be the Ascension Island station at one hour, 52 
minutes after liftoff. This is a voice remoting station through 
Houston. We'll stand by for any possible conversation through 
this station. This is Mission Control Houston, out. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , ll/ll/66, k:39 PM CST TAPE U9 

PAGE 1 

This is Mission Control Houston one hour 52 minutes 58 seconds 
after lift-off of Gemini 12- We are standing by for acquisition 
by the Ascension Island station, voice remoted through Control 
here in Houston. There will not likely be too much conversa- 
tion. Spacecraft communicator, Pete Conrad, just put in a call 
saying he is standing by. The conversation will likely consist 
of a report by the crew of Gemini 12 that their last maneuver. 
Let's join that conversation now and stand by. 
FLIGHT Gemini 12, Gemini 12, Houston standing by 



through Ascension. 



S/C 



FLIGHT 



Say again 12. 



Gemini 12, Houston. 



S/C 



This is 12, go ahead. 



FLIGHT 



Roger, would you check your Agena control 



power circuit breaker and see if it is in the 



on position, please? 



S/C 



FLIGHT 



Say again, it is on, is that correct? 



S/C 



FLIGHT 



Could you say it again, slowly. You are 



broken up a little. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, U:39 PM CST TAPE 1+9 

PAGE 2 

This is Mission Control Houston again. Apparently that is 
the extent of the conversation between Houston and the 
spacecraft Gemini 12 through the Ascension station. We 
are coming up on the Tananarive voice remoting station, 
which will occur in approximately 9 minutes. Pete Conrad 
just advised of the crew through the Ascension station 
that they have one minute until LOS. However, that 
likely will be the extent of the conversation. At 2 hours 
33 seconds after lift-off, this is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/H/66, It-: 55 P. M. CST 

Tape 50, Page 1 



This is Gemini Control at two hours, nine minutes, 23 seconds 
after liftoff. At the present time we are waiting acquisition by 
the Tananarive voice remoting station. Tananarive does have 
acquisition at this time. There likely will not be too much 
conversation between Houston through the Tananarive station with 
the crew of Gemini 12. They're coming up in approximately 
13 minutes on the coelliptical maneuver which will be U9.9 feet 
per second in a posigrade direction. Let's switch now to live 
air-to-ground. 
HOU Roger 

While we're waiting for further conversation between Pete 
Conrad here in Mission Control and the crew of Gemini 12, the 
translation maneuver or making the orbit coelliptical with that 
of the Agena, will take place at two hours, 22 minutes and 
5U seconds after liftoff. The purpose of this maneuver is to 
raise the perigee to some 150 nautical miles. This in turn will 
place it in - the spacecraft - in an orbit of some ten miles 
lower than the Agena, and at this time will be trailing the Agena 
by some 60 nautical miles. We're still standing by for any fur- 
ther conversation from Houston through Tananarive to the spacecraft 
Gemini 12. 
(PAUSE) 

HOU Gemini 12, Houston. One minute to LOS, standing 

by. 

S/C Roger, Houston. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 4:55 P. M. CST 

Tape 50, Page 2 



S/c Houston, Gemini 12. We've got visual contact 

through the sextant at an access of 85 miles. 
HOU Roger, 12, copy. 

This is Mission Control Houston. We're coming up on - I think 
we have had Loss of Signal at the Tananarive voice remoting station. 
That was very sparse conversation but apparently the crew is very 
busy in calculating their next maneuvers for the rendezvous. The 
next station to acquire will be Carnarvon at two hours, 25 minutes 
after liftoff which will be approximately nine minutes from now. 
At two hours, 17 minutes and two Beconds after liftoff this is 
Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:12 p.m. CST Tape 51 

Page 1 



This is Mission Control Houston at 2 hours, 25 minutes, and 
3 seconds after liftoff. We've just had acquisition by the 
Carnarvon, Australia tracking station and we'll stand by now to 
join that conversation as it happens. 



S/C ..00^95. 

CRO Okay, copy. We'd like a PQI also. 

S/c Roger, £<$t this time is reading 75 percent. 

CRO Seventy- five, roger. 

HOU Carnarvon from Flight. 

CRO Go ahead, flight, Carnarvon. 

HOU Did you read his 25, 26, and 27? 

CRO Roger, 25 - OOU95, 26 - 9OO65, 27 - 90001. 

HOU Copy, thank you. 

CRO Rog . 

CRO Carnarvon has C-band track. 

HOU Roger. 

Could we have a Gemini main, please? 

CRO Roger . 

HOU And OVC's every 60 seconds. 

CRO Roger, we're trying to do that. We're getting 

intermittent PCM-1 sync. 

HOU Okay. 

CRO No valid data yet. Radiators look go. 

HOU Rog. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:12 p.m., CST Tape 51 

Page 2 



We still have some four minutes and 20 seconds of this 
Carnarvon pass remaining. We'll standby. 

S/C We received our lock on our radar lockon at about 

6k miles. Our radar powered circuit breaker is on. 
And we don't seem to be able to get anything on 
the encoder. 

CRO Roger, stand by. Okay, we show you locked on here 

on the ground. We show you also at nav mode rather 
than rendezvous . 

S/C We're on the nav mode. We're waiting to be sure 

we have a lockon. 
CRO Okay. The Agena's receiving you evidently he's 

getting no indication of that. 
S/C We're getting fluctuation in the analog .-{garbled) 

HOU Carnarvon from flight. 

CRO Go ahead. 

HOU Do you want to read back what he said there? I'm 

having a hard time reading him. 
CRO Yeah. Okay, he said the — he's lost radar lock 

at about 6U miles. 
HOU Got that. 

CRO And he's trying to maintain lock again or get lock 

again, but he can't seem to get it. It is fluctuat- 
ing a little bit, but we're receiving an L-band 
coder lockout down on the ground. i 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:12 p.m. CST Tape 51 

Page 3 



HOU Did he say his power circuit breaker was stopped? 

CRO He says its closed, its okay. 

HOU Closed, okay. 

CRO We show that the Agena is receiving him. But there's 

nothing going back to the spacecraft, evidently. 

level 

We've got a good RF power/output indicating the 
transponder is okay also. 
HOU Say again. 

CRO I say the RF power level looks good. 

HOU Okay. 

CRO And that indicates the transponder is okay. 

HOU Yes. As far as you can tell. 

CRO Rog. 

HOU Carnarvon, would you send us an Alpha summary please? 

CRO Roger . 

Gemini or Agena? 
HOU Gemini . 

CRO Rog. 
HOU Carnarvon, flight. 

CRO Go ahead. 

HOU How does the AC look? Frequency? And voltage? 

CRO Stand by. 

Four minutes to LOS. How are you doing? 
S/c Roger, still no lockon. We are getting a 

fluctuation on the analog still. It's going 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:12 p.m. CST Tape 51 

Page h 



back and forth, but we haven't had any lockon. 



CRO 



Okay. 



S/C 



Other than that, everything's okay. 



CRO 



AC voltage is okay, flight. 



HCU 



Roger . 



And we need a contigency EZ on the Agena. 



CRO 



Roger . 



" This is Mission Control Houston again. At 2 hours, 32 minutes 
and 3 seconds, we've had loss of signal at Carnarvon, Australia 
tracking station. The spacecraft will be acquired by Hawaii at 
2 hours, U9 minutes after liftoff, which will be some 15 minutes 
from now. We are still about an hour from the velocity match 
maneuver which essentially means rendezvous. This is when the 
spacecraft will match the velocity of the Agena and then move 
in quite slowly at some one to two feet per second for station- 
keeping and subsequent rendezvous or docking I should say. At 
2 hours, 32 minutes, kk seconds after liftoff, this is Mission 
Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11-11-66 5:36 P.M. CST Tape 52 

Page 1 

This is Mission Control Houston 2 hours h$ minutes and 
55 seconds after liftoff. We're coming over the Hawaii 
station with both spacecraft at the present time. And 
waiting for contact between the spacecraft communicator 
at Hawaii with the crew of Gemini XII. At the present 
time the so-called co-elipticity, that is the average 
distance between the spacecraft Gemini XII and the 
Agena Target Vehicle ranges in altitude variation be- 
tween 9.k miles to 10.0 miles, which is .6 of a mile out 
of perfectly circular. Let's switch now to live air to 
ground and see what is said. 



AFD Hawaii Cap Com AFD 

HAW Go ahead AFD 

HOU Okay, when you get your message they forgot 

to amperes GETB so please read up the GETB. 

HAW GETB, okay. Let me see we need GETB.. yeah 

we need to read up the whole works up here 
is that right? 

HOU AFD away. . 

HAW GT 12 this is HAW, we have TM solid on you. 

S/C Roger Hawaii, wish we had LOS solid on the 

Agena . 

HAW You still having negative luck with all of 

that, huh? 

S/C Posi.. we're proceeding with a radar failure. 

HAW Okay, if you have the opportunity at the present 

time to try some commands to see if you command 



GEMINI 12 MISSION COMMENTARY 11-11-66 5:36 P.M. CST Tape 52 

Page 2 



capability. 
S/c Roger, go ahead. 

HAW Okay, what we would like for you to do is 

give us SDP dim and break that's command 211 
and 201. 

S/C When you're ready go. Mark. Negative MAP light. 

HAW Okay we have the function. 

S/C Okay would you give us 201. 

HAW Roger, sending 201. Mark. 

S/C Negative MAP. light. 

HAW Roger, we have MAP on the ground. We also have 

(faded out) We're showing that command capability 
is working fine here on the ground. 

S/C Roger, are you showing that we do have the dipole 

selected? 

HAW That is affirmative. We do have the dipole 

selected. 

S/C try a spiral 

HAW Yeah, go ahead give it a try. 

S/C Well, it doesn't look like that one was too 

good. That didn't help out too much. 
HAW Okay, go ahead and go back to dipole. Your 

commands are going through fine. 
S/c Yeah, we're getting a more steady lock on when 

we are on the spiral it looks like. 
HAW Okay, stand by and I'll see what they want to do. 



GEMINI 12 MISSION COMMENTARY 11-11-66 5:36 P.M. CST Tape 52 

Page 3 



Whether they want to stay on spiral or dipole 
Is he getting range '/ a range rate? 

S/C Dipole is the best right here. 

HAW Still not getting any range information right? 

S/C Well, it is intermittent. Let's see, right 

now I've got the latest one it's 3^ 58 miles. 

HAW 3b point 58 is that right? 

S/C Roger. That agrees approximately with our 

angle. Our angle is about l6 degrees, we've 
got visual on it now both to the seXtarit arid 
the optical sight. 

HAW Okay. Go ahead flight. 

HOU We're just copying. 

S/C Our angle is going to be a little bit later 

than nominal on that TPI. 
HAW Okay. 
HOU Frank, lower your Bet. 

Hawaii from flight. 
HAW Go flight 

HOU You better read them up that TPI backup, GETB 

and the forward up down right and ^rafege'and - 
range rate. 

HAW Rog. XII I have your TPI backup information 

when you are ready to copy. 
S/C Ready to copy, go ahead. 

HAW Okay, GETB 30551; Delta T 026, Delta V 22.8 

forward Delta T 010; Delta V 3-2 up; Delta T 



GEMINI 12 MISSION COMMENTARY 11-11-66 5:36 P.M. CST Tape 52 

Page k 



0.08; Delta V 2.7 right. Okay, your range 

will be 2k. 7 miles range rate 95 feet per 

second, at point Charlie. 
S/C Roger, understand GET a burn 30551; 22.8 forward 

3.2 up; 2.7 right, range at point C is 2.47 

95 feet per second. 
HAW Roger. Okay, we've completed a tape on that. 

Would like to have some more information on 

your co-elipticity. 
S/C Go ahead. 

HAW Okay, it will be at 9 point k nautical miles 

to 10 point zero nautical miles and that will 
be almost at TPI or at time 3:04:27. 
10 zero will be at that time. 

S/C Roger, understand. What will be at TPI? 

HAW 10 zero 

S/C That's the 10 zero. 

Roger understand. The apogee would be at TPI. 

S/C That's affirmative. 

HOU HAW from flight 

HAW Go flight 

HOU The data is showing that the computer is accept- 

ing the radar data, how does it look to them now? 

HAW It's okay, the information we're getting here on 

the ground is showing that the computer is accept- 
ing the radar data, how does it look to you now? 



GEMINI 12 MISSION COMMENTARY 11-11-66 5:36 P.M. CST Tape 52 

Page 5 



HOU Data is looking fairly reasonable are you showing 

a steady pass now... gotta go now remote. 

HAW Think it's worth a try. 

Flight? 

HOU Less than a minute now. 

Hawaii will have LOS in less than a minute now. 
HAW Roger. What do you think about all that flight? 

HOU Say again. 

HAW Rog. He isn't really sure up there, he is 

standing by to see whether we should go in 
a rendezvous mode or stay in HA.V. 

HOU You're about 30 seconds to LOS. 

HAW I don't think we have enough to know that it 

is working so we better stay in NAV. 

HOU Okay, flight recommends that you stay in Nav. 

with it. 

S/C Roger, we agree. 

HOU Okay. I don't know we may have a little 

contact going here. 
HAW We've had LOS with Gemini, flight. 



This is mission control Houston, at 2 hours 58 minutes 31 seconds 
after liftoff. We have had LOS at the Hawaii tracking station. 
And within the minute we should have first contact through the 
California station which will be voice remoted from Pete Conrad 
here in Mission Control. And the second stateside pass of this 
mission. We're standing by for this first contact. Spacecraft 
Gemini 12 is nearing the end of its second revolution in this 



GEMINI 12 MISSION COMMENTARY 11-11-66 5:36 P.M. CST Tape 52 

Page 6 



four day mission. The last in the Gemini series. California 
is getting geared up to begin the reception and transmission 
with the spacecraft. We are standing by for acquisition of 
signal. Let's join the conversation now through the California 
station. The 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , ll/ll/66 5 5:^6 p.m. TAPE 53 

PAGE 1 



HOU 



Let's join the conversation now through the 



California station. See how well it is operating 



and see if it will be of any help to you during 



your braking period. 



S/C 



Roger . 



(dead air) 



HOU 



Guaymas remote - California local. 



GYM 



Guaymas is remote. 



CALIF 



California is local. 



We are standing by here in Mission Control for additional 
conversation. Coming up on the terminal phase initiation at 
three hours and five minutes elapsed time which is approximately 
three minutes from now. This will be some 23.1 feet per second 
posigrade along the line of sight toward the Agena target 
vehicle. The spacecraft should be trailing the Agena by about 
20 miles. The crew will make this maneuver when the Agena is 
at some 26.8 degrees elevation angle. We are still standing 
by here for additional conversation between the ground. 
Hopefully we will hear the actual burn and their comments 
about the thrusting. 

HOU Texas remote - Guaymas local. 

TEX Texas remote. 

GYM Guaymas is local. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:46 p.m. TAPE 53 

PAGE 2 



S/C Don't want to give any significant lock-up. 

HOU Roger. Have you burned TPI. 

S/C Sure, TPI was an on-board burn of 22 forward 

and 3 up was burned at . . when did you burn 
three up Buzz. Burned at 2 +05 + 48. 

HOU Okay, 12 say again, you burned 22 forward, 

did you burn the three up or not. 

S/C Negative . 

HOU Okay, you burned 22 forward, no out -of -plane 

and nothing up at 03:05:48 is that correct. 
S/C This is 12, we burned 22 forward. 

HOU Okay. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:56 P. M. CST 

Tape Page 1 



This is Mission Control Houston. Fairly silent stateside 
pass. We're still standing by for additional conversation. You 
heard the readouts of the last maneuver, the terminal phase ini- 
tiation, 22 feet per second forward and an elapsed time of three 
hours, five minutes, k& seconds. The crew apparently is still 
having intermittent lock on with the radar. They went briefly 
to the spiral antenna and are now back to the adapter antenna. 
However, the ground stations are getting confirmation of radar 
commands and so on. We're standing by for any additional con- 
versation from the ground. We'll continue to monitor air-to- 
ground. 

HOU 12, this is Houston.. 

S/C Go ahead Houston. 

HOU As best as we can tell on the ground, it is 



updating correctly, oh, within eight seconds 



every once in awhile then to UO seconds and 



I don't know what you're reading in the cock- 



pit, but it doesn't look too good on the ground. 



S/C 



Houston, first correction is two up. 



HOU 



Roger, first correction two up. 



s/c 



And Houston, we're getting no range rate or 



range analog at all. 



HOU 



Okay, you getting anything out of the computer? 



S/C 



Occasionally intermittent whenever we get a lock. 



HOU 



Okay, and would you turn the encoder off, please, 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:56 P. M. CST 

Tape 5k, Page 2 

we want to update the Agena. 



S/C Roger. 

S/C angle 393- 

HOU Say again, 12. 

S/C 29.51 range rate. 

HOU You're very intermittent, 12. Would you 

repeat? 

S/C garbled 

S/C We're now getting good radar data. 

HOU You say you're getting good radar data? 

s/c Affirmative. We're now getting good radar data. 

HOU Okay. We were in the process of switching 

stations there and we couldn't read you too 

well. 

S/C Okay, eight seconds to ...stand by for a midpoint angle. 

You might have known it, there's. not a star in. the sky 
up here. You still have inertial needles, don't we, 
Buzz? 

HOU 12, this is Houston. You can put the encoder back 

on and you are transmitting UHF on intercom there. 

S/C Roger. Roger, we're on VOX. Tell us if we're 

coming through clear enough. 

HOU Okay, you're coming through. And would you leave 

the encoder off, please? 

S/C Encoder's off. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:56 P. M. CST 

Tape 5 1 *, Page 3 



HOU Thank you. 

ANT Antigua AOS . 

S/C Okay, we want three degrees at a minute and a 

half. 

S/C That looks pretty good. Acq lights are showing 

up good. 

S/C Range is coming in now on the analog but that 

range rate is lousy. 
S/C Yes. Still nothing on the range rate here. 

S/C Angle track is out of this world. Three seconds 

to reading. 

S/C ...like she might be drifting. 

S/C a little fast, huh7 

S/C Got the stars now? 

S/C ... drifting light? 

S/C Thank you. 

S/C I have a new star... 66. Stand by for pitch. 

S/C On my mark. 359 • 3^6. Okay, run three up. 

S/C That's it now? 

S/C That's right. 

S/C That looked pretty good on the plot there. A 

little outside. 

S/C You' 11 know for Bure when the range is valid. 

S/C field of radar. 

S/C Field of radar? 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:56 P. M. CST 

Tape 5 1 *-, Page k 



HOU 12, Houston. We show you're getting a little 

solider on the radar. 
S/c Roger, Houston. We are - range looks like 

it might be pretty good. Range rate is lousy. 
HOU Rog. 

S/C Ten seconds to reading. 

S/C Roger. 

S/C Now check the yaw on it this time, Jim. 

S/C Okay, rog. 31. 

S/C . Range is 8.36. 

S/C Very good. 

S/c Yaw is 3591 stand out very nicely. Got 

a star path out there now. 
S/C Good. 
S/C Got a range rate of 79 • 

S/C Very good. 

S/C Sure is a bright acq light. 

HOU 12, Houston. One minute to LOS. You can go 

encoder on. 
S/C Roger. 
HOU Have fun. 

S/c Okay, fifteen seconds to our midpoint. 

S/c Will be 70, 7.3, 7^ feet per second. Range 

rate is okay now. 
S/C Range rate looks 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 5:56 P. M. CST 

Tape 5h, Page 5 



This is Mission Control Houston at three hours, 21 minutes, 
3h seconds after liftoff. We've had loss of signal at the - over 
the Eastern Test Range. We'll have acquisition by the Ascension 
Island station within about nine minutes. We'll stand by to come 
back on the air with any conversation with Houston through Ascension. 
This is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 6:15 pm CST 

TAPE 55, 
PAGE 1 



This is Mission Control Houston, 3 hours 29 minutes and 
k seconds after Gemini 12 liftoff. We are waiting now the 
acquisition of signal at the Ascension Island tracking 
station and conversation between the spacecraft communicator 
Pete Conrad here in Mission Control and the crew of Gemini 
12. The actual rendezvous in thi6 mission will occur at - 
during the pass over the Tananarive voice remoting station 
and we'll have a brief gap between the Ascension station 
and the acquisition at Tananarive. We will bring you the 
conversations over both of these stations as they occur. 
Let's standby now and wait for Pete Conrad to give the crew 
a call through the Ascension station. 



HOU Gemini 12, Gemini 12, Houston standing by 

at Ascension. 
SC (garbled) 2-1/2 degree burn. 

HOU Gemini 12, Houston standing by through Ascension. 

SC Roger Houston. 

SC 6 feet per second (garbled) (garbled) 

OK you can thank us we have brains, (garbled) 
Need some space, for them, (garbled) 



This is Mission Control Houston again. i he quality of the 
transmission through the Ascension station is so poor that we'll 
drop off of this pass and pick it up again over Tananarive and 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966, 6:15 pm CST 

TAPE 55, 
PAGE 2 



hopefully it will be a little better quality at that time 
and we should be approaching rendezvous while over the 
Tananarive station. This is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 6:32 p.m. TAPE 56 

PAGE 1 

This is Mission Control Houston, at three hours, U5 seconds 
after lift-off. We are now in contact with Gemini 12 through 
the Tananarive voice remotihg station. Actually they should 
have completed their velocity match or breaking maneuver at 
this time. The docking itself will take place over the Indian 
Ocean prior to acquisition by the tracking ship Coastal 
Sentry which is South of Japan. Let's join the present conver- 
sation between spacecraft communicator Pete Conrad and 
Gemini Spacecraft. 

HOU Gemini 12, Houston. Would you go to "push 

to talk" please. 
S/C Hold it a minute Houston. 

Okay, I got it finished now. 
HOU Gemini 12, Houston, would you go to "push to 

talk" please. 

HOU Gemini 12, Houston is standing by at Tananarive. 

S/C Okay, (garble) 

HOU Say again 12. 

S/C Starting to roll around a bit. (garble) 

(broken transmission). 

Hey, I think the old, I think (garble) 

Whew, what a burn. 
HOU 12, Houston, would you go to "push to talk" 

please. 

S/C (Broken transmission) 

HOU 12, Houston, Do you read. 

S/C Man, that baby is bright. 

Alright, now let's see, let's get around to 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 6:32 p.m. TAPE 56 

PAGE 2 



see where we are going . . . straight up 

aren't we (garble) dark side any 

more. 

HOU Gemini 12, Houston 

S/c .... and the time .... 

HOU Gemini 12, Houston. Do you read. 

S/C ... forward. Okay. 

HOU Gemini 12, Houston 

S/C time ... (garble). 

HOU Gemini 12, Houston. 

HOU Gemini 12, Gemini 12, Houston 

S/C I still don't know what they ask about. 

the Agena. 

HOU 12, Houston. 

HOU Gemini 12, Houston 

HOU Gemini 12, Gemini 12, Houston 

S/C Go ahead, pull around so I can see what the 

lights look like. 
HOU " Gemini 12, Houston 

S/C 12 , . . . . was lousy. . . . (broken) 

HOU Gemini 12, Houston 

S/C" Gemini 12. 

HOU Go to "Push to talk" will you and you are GO 

for docking. 



GEMINI 12 MISSION COMMENTARY , ll/ll/66, 6:32 p.m. TAPE 56 

PAGE 3 

S/C (garble) 

HOU 12, this is Houston, one minute to LOS, you 

are GO for docking. 
This is Mission Control Houston. As you heard the crew of 
Gemini 12 are in the so called "locks mode" on their trans- 
mitter, that is, the intercom is tied into the transmitter 
so that when they talk, they are actually transmitting to 
the ground. However, this prevented the spacecraft com- 
municator here in Mission Control from reaching them. 
We will standby for the acquisition by the tracking ship 
Coastal Sentry for a word on the actual docking which should 
take place over the Indian Ocean within the next few moments. 
This is Mission Control Houston at 3 hours, 53 minutes, 
1+9 seconds after liftoff. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/ll/66 6:56 PM CST, TAPE 57 

PAGE 1 

This is Mission Control Houston at h hours 9 minutes and 
3 seconds after lift-off. Spacecraft Gemini 12 and the Agena 
still undocked. Are now passing over the tracking ship Coastal 
Sentry, south of Japan. Let's join , in on that conversation now. 



HOU CSQ, what percentage on PQI 57* 

CSQ Say again, Flight. 

HOU What is the PQI readout - was that 5-7 

CSQ 7 

HOU 6-7 

CSQ 7 

HOU Great. Is he docked, CSQ? 

CSQ That is negative, Flight. 

HOU Okay, are you satisfied with the Agena? 

CSQ Both vehicles are go. 

HOU Okay, let him know that. 

CSQ Okay. Gemini 12, CSQ. 

S/C Roger, CSQ. 

CSQ We are giving you a go for docking. 

S/C Roger, thank you. 

CSQ And I want to send you a TX. Do you want to 
place your TM switch to command and your 



GEMINI 12 MISSION COMMENTARY, 11/11/66, 6:56 PM CST, TAPE 57 

PAGE 2 

CSQ adapter C-band to command? 

S/c TM to command, adapter C-band command. 

CSQ Stand by for your fuel cell purge. 

S/C Roger. 

HOU CSQ, Flight. 

CSQ Go ahead, Flight. 

HOU Let me know when he docks. 

CSQ Roger* 

HOU And would you send us a Gemini main, please. 

CSQ, Gemini main. 

HOU Roger. 

CSQ Okay. Flight, CSQ. 

HOU Go ahead. 

CSQ We show the Agena in pitch, yaw rates high and 

we think that should be low. Rate low rather 
than rate high. 

HOU That is correct, CSQ, it ought to be low, but 

why don't we just wait until we get docked there. 
CSQ Roger. Flight, CSQ. 

HOU "Stand by. 

S/C CSQ, this is 12. 

CSQ Go ahead. 

S/C We are docked. 

CSQ Roger. Did you copy Flight? 

HOU Roger. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 6:56 PM CST, TAPE 57 



PAGE 3 

CSQ Would you give me a cryo 0 2 and H3? 

S/C Roger. 

CSQ Okay , would you give me an .... reading on 

page 2? 

S/C Roger.... now and the pressure is reading 550. 

CSQ How about 0^1 

S/C 0 2 reads 97 percent and we are exactly ... psi 

I will pump it up a little. 
CSQ Roger, and 1 minute until LOS. 

S/C Roger. 

CSQ You can turn your encoder back on. 

S/C Roger. 



This is Mission Control Houston. We have had loss of 
signal of Gemini .12 from the tracking ship Coastal Sentry. 
The actual time of docking was at a ground elapsed time of 
k hour 13 minutes and 53 seconds. The next station to acquire 
will be the Hawaii station at a ground elapsed time of k hours 
25 seconds - 25 minutes which will be approximately 9 minutes 
from now at 1+k hours 16 minutes and 16 seconds, this is 
Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 11, I966, 7:12 pm CST 

TAPE 58, 
PAGE 1 

This is Mission Control Houston at h hours 25 minutes and 
53 seconds after liftoff on the Gemini 12 mission. We're 
standing by for acquisition of Gemini 12 Spacecraft - 
apparently still docked with the Agena, over the Hawaii 
tracking station. There should be a certain amount of con- 
versation between the Spacecraft Communicator at Hawaii and 
the crew of Gemini 12. The Spacecraft Communicator is putting 
in a call now, let's join that conversation. 

HAW Mighty fine, you're looking good from down here. 



Have you completed gyrocompassing? 



SC 



Roger have completed gyrocompassing, we are 



now BEF, Agena 000. 



HAW 



Roger, very good. 



We have one question, we had LOS at CSQ 



before you had completed your purge, how did 



the rest of the purge go? 



SC 



Roger, purge appeared to be normal in all 



respects . 



HAW 



Roger, very good. 



Flight looks like computer is still on should 



I remind him that it's scheduled to go off about 



this time? 



HOU 



Say again Hawaii. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966 7:12 pm CST 

TAPE 58, 
PAGE 2 



HAW Roger, the computer is still on should I 

remind him that it is scheduled to go to the 
prelaunch and then off at about this time. 

HOU Just mention to him that the computer is 

still on. 

HAW OK. 

12, Hawaii. We're showing that the computer is 
still on. 

SC Roger, computer coming off at this time. 

HAW Roger . 

SC We'd like to leave it ori for the undocking here 

and then we'll turn it off right after that, 

HAW Roger, you broke up there for a few seconds 

will you say again? 

SC Roger, we'd like* to leave the computer on until 

we've completed the undocking which we are going 
to start right away and then we'll turn the 
computer off. 

HAW Roger, very good. 

AFD Hawaii Cap Com, AFD, how is the tape dump going? 

HAW It is in process at the present time, we have 

good solid TM should be no problem with it 

though . 
AFD Roger 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, 1966 7:12 pm CST 

TAPE 58, 
PAGE 3 



HAW Tape dump is completed. 

HOU Roger . 

HAW 12, Hawaii... We show that you are undocked at 

present. 

SC Roger Hawaii, we are sitting out about 2 feet 

away from the vehicle. 
HAW Roger . 

SC Hawaii this is 12. Please inform the people 

that the loop on the Agena tether is deployed 
and looking good. 

HAW ' Roger. 

HOU Houston, copy. 

HAW 12, Hawaii will have LOS in about one minute. 

SC Roger Hawaii. 

HAW Hawaii has had LOS of both vehicles. 



This is Mission Control Houston. We've had loss of signal from 
both the Agena Target Vehicle and the Gemini Spacecraft at the 
Hawaii tracking station. However, we've got something like one 
minute or less till acquisition by the California station from 
which Pete Conrad will talk to the crew. The spacecraft is 
nearing the end of its third revolution. During this state- 
side pass Pete Conrad will discuss with the crew a suspected 
problem in the Agena primary propulsion system. Apparently 
there was some erratic data during the insertion burn of the 
Agena. However, this is being - this data is being looked at 
very closely by Air Force and Contractor personnel and the 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 11, I966, 7:12 pm CST 

TAPE 58, 
PAGE k 

decision as to what modifications will be necessary will come 
up after these discussions. Let's join now the conversation 
between Pete Conrad and the crew during the stateside pass. 

HOU turn your X-ray on when you are ready. 

SC Roger will do. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11-11-66 7:22 P.M. CST Tape 59 

Page 1 

Just prior to joining the conversation here between the 
Mission Control Center and the Gemini 12, the report was 
received from the crew that they are now undocked. There 
are several dockings and undockings by both crew members 
during this period of the mission. We'll stand by now for 
further communications between spacecraft communicator 
"Pete" Conrad who tonight is wearing his cap presented 
him aboard the Wasp at the conclusion of Gemini XI. The 
blue cap with the " scrambled eggs" on the brim and the 
Gemini XI "Pete" insignia on it. We're standing by for 
further conversation. 

CONRAD You letting "Buzz" fly that thing now? 

S/C What say Houston? 

CONRAD I said, you letting "Buzz" fly that thing 

now? 

S/C Yes, we're all having plenty of opportunities. 

He hasn't used up his share of the fuel yet. 
CONRAD Yeah, watch him, he's a time hog. 

S/C I'm seeing that. We're right around to the 

tail end of the Agena now, looking right up 

the engine. 

CONRAD You can really put that thing where you want 

to can't you. 

S/C Roger and did you get the word about the Agena 

tether. It's solid and waving in the breeze. 
CONRAD Yeah, we got the word. 

HOU Guaymas remote California local. 

GYM Guaymas remote 



GEMINI 12 MISSION COMMENTARY 11-11-66 7:22 P.M. CST Tape 59 

Page 2 



Calif California local 

HOU 12 Houston 

S/C Go ahead Houston. 

CONRAD We seem to have a little problem with the 



frog egg experiment and they would like 
the pilot to reach up there and "jiggle" 
the electrical connector to the box while 
we're looking at you. 



S/C Roger, will do.. We'll "jiggle" the electrical 

connector . 
CONRAD Thank you. 

S/C Just getting a chance to do some flying. 

CONRAD Say again. 

S/C I just had a chance to do some flying. 

CONRAD Sorry about that. 

S/C What electrical connection did you have in 

mind. 

CONRAD The one that goes in to the back of the box. 

S/C Okay, it's being pushed and pulled. 

CONRAD Okay . 

FD Texas remote Guaymas local 

HOU Texas remote 

GYM Guaymas local 

HOU 12 Houston 

S/C Go ahead 

Conrad Roger, Jim, we have seen an anomaly in the PPS 

engine when it was being burned into orbit and 



GEMINI 12 MISSION COMMENTARY 11-11-66 7:22 P.M. CST Tape 59 

Page 3 



S/C 



we're still going over the data right now. 
And the problem appears to be one that in- 
dicates possible turbine pump trouble and 
we're going to give you a "go" a little bit 
later whether you can make the PPS burn or 
not. We'll keep you advised and we're still 
looking at the data right now. 
Eoger, understand a problem in the turbine 
right now until you want us to go later 



S/C 



S/C 
CONRAD 



That's affirmative. 

12 this is Houston we have about one minute 
to LOS, you got anything? 

Negative Houston, we're coming in to position 
now. 

Okay this is the last time we'll talk to you 
through the states, Have Fun. 
Roger, thank you for your cooperation. 
You're welcome. And 12 this Houston you can 
turn your quantity (faded out) 

END OF TAPE 



GEMINI 12, MISSION COMMENTARY , ll/ll/66, 7:32 p.m. TAPE 60 

PAGE 1 



HOU 12, this is Houston, you can turn your 

quantity - cryo quantity switch to OFF 
now. 

S/C Roger, thank you Houston, has my wife had 

that baby yet. 

HOU Yea, I think so, it was during some flight. 

I talked to both of them and they are ex- 
tremely pleased with your rendezvous. 

S/C Who turned the radar off. 

HOU Joe Shea said he didn't. 

S/C Tough luck. 

This is Mission Control Houston. That winds up the Stateside 
pass on this third revolution. The spacecraft will begin 
its fourth revolution in a few moments as it crosses the 
longitude of Cape Kennedy. There will be a very low elevation 
angle pass over the tracking station Rose Knot which is 
hove to off the West coast of South America. The pass will 
only last some three minutes and thirty- two seconds, We will 
standby for any conversation during that pass. At k hours, 
kj minutes and 33 seconds after liftoff, this is Mission 
Control Houston. 



END OF TAPE. 



GEMINI 12 MISSION COMMENTARY (NOT' AIRED) , ll/ll/66, 7:^5 PM CST 

TAPE 61 PAGE 1 

RKV RKV... 

HOU Roger . 

RKV We show them as being spacecraft free. 

TM is breaking up pretty bad. 

AFD , RKV. 
AFD Go ahead. 

RKV Okay, our TM doesn't look very good at all. 

AFD Roger . 

RKV Our TM completely out of contact with him. 

AFD Roger, you can forget about the tape dump, then. 

RKV Roger. Gemini 12, RKV. Gemini 12, RKV. 

S/C Gemini, RKV. 

RKV Okay, we are having a little bit of trouble 

locking up on your TM. I will give you some 
information while I have got you though . 
I would like to confirm that your X-ray is on. 
Do you copy? 

S/C . . .RKV. 

RKV Gemini 12, RKV. Did you copy? 

Gemini 12, transmit in the blind. I would like 
to confirm that you have the X-ray in the on 
position. . .and I would like to advise you that 
the experiment time for Mike ^08 is nominal. 



GEMINI 12 MISSION COMMENTARY (NOT AIRED), ll/ll/66, 7:^5 PM CST 

TAPE 6l PAGE 2 

RKV We have LOS minus 1 Gemini 12. 

S/C Roger, stand by. We are having a little trouble 

with the control. 
RKV rkv, Flight. He has pitch and roll high, excessive 

...fuel high. He reports he is having a little 

bit of control trouble. We have not had real 

good telemetry as yet on Gemini. 
HOU Roger. 

RKV He is configured FC-1 000. 

HOU Copy. His problem was in roll? 

RKV Pitch and roll are still high. We have LOS 

Agena . 

HOU Roger. 

...07 cryo 0g tank pressure is reading 67^ psi. 
HOU Roger. Send us an LOS main? 

RKV Roger roger. 

HOU And would you give us a read back on what the 

crew said to you, as for their control problem!. 

RKV Roger, all he reported was that he was having 

control problems and never did get good contact 
with me and we never did get good telemetry. 

HOU Roger, copy. 

RKV AFT), RKV. 

HOU Go ahead, RKV. 



GEMINI 12 MISSION COMMENTARY (NOT AIRED), ll/ll/66, 7:^5 PM CST 



TAPE 61, PAGE 3 

RKV They were undocked. Spacecraft free and rigid. 

HOU Roger, understand. Can you make a tape playback 

on that conversation and send us in verbatim what 

they said? 
RKV Roger, will do. 

HOU Roger. RKV Cap Com. AFD. 

RKV AFD, RKV. 

HOU Roger, send us a Gemini Alpha. 

RKV Roger. On its way. 

HOU ' Roger. RKV, Flight. 

RKV Flight RKV. 

HOU Were they undocked your whole pass? 

RKV That is affirmative, Flight, undocked the whole 

pass. I believe the only comment they made at 
all and this is the only transmission I have from 
them that they were having a slight control problem. 

HOU Okay, and what did you see on the ground. 

RKV Okay, we show the spacecraft to be free and the 



cone was rigid. The vehicle was within deadbands. 
Pitch horizon sensors were off -scale high, roll 
horizon sensors were off-scale high and the position 
was within the deadband on the Agena. 
HOU You said pitch and roll horizon sensors were off- 

scale high, but that you were within deadbands? 



GEMINI 12 MISSION COMMENTARY (NOT AIRED), ll/ll/66, 7:^5 PM CST 



TAPE 61, PAGE k 
RKV That is affirmative. And it looks like we 

have some pretty healthy heart rates. 
HOU Say again. 

RKV It looks like we have some pretty healthy 

heart rates. Copy? 
HOU Yes,. but you were still within deadbands? 

RKV That is affirm. That was according to the 

position gyros. 
HOU Say again. 

RKV That was according to the position gyros. 

HOU Okay, let me come back to you RKV. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:07 pm CST, TAPE 62, PAGE 1 



This is Mission Control, Houston, at 5 hours- 20 minutes 50 seconds 
after liftoff. Spacecraft Gemini 12 at the present time, is over 
the Tananarive remoting station. Let's cut in now and join the 
conversation. 

S/c Secondary roll gyro. Got it back again and we've 

docked here towards the end of the night. We've 
only got about k minutes of M-^08 experiment which 
we're doing now and we've just completed that will 
be it. 

HOU Roger, did you confirm that you had a primary rate 

gyro problem or what? 
S/C No, we didn't. We set back the primary rate gyro. 

What we might have done, in the night docking was 

to steer the Agena since we were not in the regional 

position but was actually rotating around, and we 

had to let it tap itself out for awhile and' then 

we came back in. 
HOU Okay, you were in FC-1, huh? 

S/C Yes, I confirm PC-1 and it looks like a slight 

disturbance with-that Agena if we don't get docked 

because of the radar. 
HOU I see. Could you give us a PQI reading and also 

would you check you're cryo 02 pressure please. 
S/C Cryo 02 is reading about 660 PSI and the PQI is 

reading about 56 percent. We're a little low and 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:07 pm CST, TAPE 62, Page 2 



contemplating forgetting about the second docking 
practice to save fuel. 

HOU Roger, we concur. Are you satisfied with your 

control system now? 

S/c Roger, it appears that our control system is 

adequate at this time. We're not too sure. We're 
still in the flight path and occassionally disturb 
the Agena. We're trying to fly with the Agena and 
it makes us feel like we might have had~.a control 
valve. 



HOU Okay. 

S/C Houston, 12 

HOU Go ahead. Go ahead 12, this is Houston. Gemini 12, 

this is Houston, go ahead. 
S/C Roger, Houston, we are contemplating another docking 



just to try our control system again. The Agena doesn't 
seem to be maintaining its position to accurately, 
and we noticed that in the daylight. It moved about 
kO degrees off . 



HOU Okay. Are you still in flight control mode 1? 

S/C Roger, we are in flight control mode 1. 

HOU 12, this is Houston. Gemini 12, Houston. 

S/C Go ahead, Houston. 

HOU Roger, Jim, when it gets off like that in FC-1, it 

doesn't come back very fast, why don't you go to FC-2 
and gyro compass to your head and set up the commands 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:07 pm CST, TAPE 62, PAGE 3 



to gyro compass in FC-2 to what you want? 
S/C That sounds like a pretty good idea. 

HOU 12, this is Houston. Have you been using rate 

command for your station keepings and dockings, 

or did you do them at pulse or what? 
S/c This is 12. We've been using pulse and on our 

final docking maneuver we went to rate command. 

That's when we thought we had the discrepancy. 

While we were undocking and trying to figure out 

what was wrong, we went to rate command to see 

what the situation was. 



HOU Okay. When you undock, are you using your maneuver 

thrust ers to undock with? 
S/C That's affirmative. 

HOU Okay. Listen, we found that if you undock, don't 



touch anything, just send the undock command and the 
TDA will shove you out, and you don't have to use any 
control at all. You can just set it in rate command, 
and hit "undock", and it will push you out just fine. 
You may be disturbed at FC-1 with your forward firing 



thrusters. 

S/C Roger. We read you. 

HOU 12, this is Houston. 

S/C Go ahead. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:07 pm CST, TAPE 62, PAGE k y 



HOU Why don't you go ahead and gyro compass in FC-2 

and see if that's doing the job for you and that 
you get it all back to where it should be. 

S/C Roger, will do. 

HOU And then, you can go ahead and do your undocking 

again if you feel that you have the fuel and I 
recommend that if you do it this time, when you 
send the undock command, Just let the TDA push 
you out. You don't need to fire the forward- 
firing thrusters to back out of there. 

S/C Roger. 

HOU What we'd like you to do when you undock, is 

do it over the CSQ, which will be your next station. 
Just back on out to assure yourself that your 
control systems are okay and then you can go back 
and redock. 



S/C Roger. 

HOU Gemini 12, Houston. 

S/C Go ahead Houston. 

HOU We have one minute to LOS, and before you undock, we 

will give you GO for that over the CSQ. We'd like 
to look at you a little bit. 

S/C Roger. Take a look at the Agena too. 

HOU Yes, that is what we're doing. I think if you'd 

been backing out using your forward firing thrusters 
in FC-1, you might upset the Agena. 

TAN Tananarive, LOS 



This is Mission Control, Houston. 5 hours 29 minutes and 30 seconds 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:0? pm CST, TAPE 62, SAGE 5 

after liftoff. We've had loss of signal at the Tananarive remoting 
station. The next station to acquire the spacecraft will be the 
tracking ship, Coastal Sentry. A nd at ground elapsed time of 5 hours 
U-2 minutes. This is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-11-66 8:28 P.M. CST Tape 63 

Page 1 

This is Mission Control Houston 5 hours hi minutes and 59 
seconds after liftoff. We're momentarily expecting contact 
with the tracking ship Coastal Sentry and we'll stand by here 
to listen in on that conversation at it occurrs. Still got 
a few seconds yet to acquisition. The spacecraft is still 
docked with the Agena Target Vehicle and during this pass 
over the CSQ there will do an undocking and run some tests 
on the control systems of both the spacecrafts. They have 
acquisition aid contact from the CSQ at this time. They 
have solid telemetry both vehicles from the CSQ. Still 
standing by here for voice communication between the CSQ 
and spacecraft Gemini XII. Both vehicles are "go" on the 
ground, there's still no voice communications. We're stand- 
ing by for the communications between the CSQ and the space- 
craft Gemini 12. 
S/C Come in CSQ 

CSQ Go ahead. 

S/C Roger, you're right the sensors on the Agena 



are in high gate 



CSQ 



Roger 



S/C 



That's low gate flight not high gate, low, low 



gate. 



CSQ 



Okay . 



S/C 



Gemini 12 CSQ 



This is low CSQ 



CSQ 



Roger. Both vehicles look good. We would like 



to go ahead and undock and like to do it slowly. 



GEMINI XII MISSION COMMENTARY 11-11-66 8:28 P.M. CST Tape 63 

Page 2 



S/c Roger, be informed that kk and 30, we just 

got on two fuel cells Delta P light 
HDU Roger . 

S/C What's your onboard pressure now? 

HOU Well, let's solve that one first. CSQ. 

CSQ Roger . 

HOU How do the fuel cells look to you? 

CSQ We're looking at them right now. 

HOU Would you send us a summary please Gemini 

soon. 

CSQ Roger, we'll send you another main. 

S/c CSQ this is 12 do you want us to undock over 

your station. 

CSQ ' Let's take a look at these Delta P lights 

first. 
S/C Okay 

HOU Does it look alright to you CSQ? 

This is flight CSQ come in CSQ 

CSQ Come in flight go ahead 

HOU Okay, the 02 and H2 pressure differential is 

okay. We can't tell the 02 to water. 
CSQ Okay, do you have any bi -levels ? 

S/C That's affirmative. 

CSQ What are they saying? 

S/C They're both on. 

CSQ Which ones? 

S/C That's Baker Baker 03 and Baker Baker Ok 



GEMINI XII MISSION COMMENTARY 11-11-66 8:28 P.M. CST Tape 63 

Page 3 



HOU Okay , CSQ can you verify unit 2 SPS temps 

Baker 271 
S/C Roger 
CSQ PCM counts 

S/C CSQ Gemini XII 

CSQ Go ahead XII 

S/C Roger, the fuel cell Delta P just went up 

No change in the Delta P area 
CSQ What was it? 

S/C That was it. 

CSQ Roger, both H2s are reading about point 55 and 

H^Q readings are both one to two or about 2.1 

point 15. 
HOU Roger 
CSQ Roger, copy. 

HOU Affirmative. 
HOU CSQ flight 

CSQ Go ahead flight. Proceed with the undocking 

and take a look at the control system. 
HOU Baker 271 reads 88 

88 

CSQ Agena PCM count. 

HOU Roger, and CSQ we need another Gemini main. 

CSQ Roger . 

HOU Bill, did you tell them to go ahead with the 

undocking in the control system. 



GEMINI XII MISSION COMMENTARY 11-11-66 8:28 P.M. CST Tape 63 

Page k 



CSQ Roger, I've got something here I don't quite 

understand flight. Give me a chance about 
30 seconds or so. 
Flight CSQ 

HOU Go ahead 

CSQ, Okay, I've got indications that all the attitude 

maneuver thrusters,. I'tb got the vent lights on 
in all cases maneuver and attitude thrusters. 

HOU Then that means the power switch is off doesn't 

it? 

CSQ Roger. 

HOU Okay, let's get this undocking under way so we 

can get an evaluation at you or at Hawaii. 

CSQ Okay, you going to do it at Hawaii. 

HOU No, have them go ahead and do it and see how 

it looks to them. 

CSQ Okay. 12 CSQ 

S/C CSQ 12 

CSQ Go ahead and undock. 

S/C Roger. 

HOU How does it look CSQ? 

CSQ He's still docked. 

HOU 30 seconds to LOS Gemini 12 

S/C Roger, we're doing this as fast as we can. 

CSQ Flight CSQ 

HOU Go ahead 



GEMINI XII MISSION COMMENTARY 11-11-66 8:28 P.M. CST Tape 63 

Page 5 



CSQ You want to hold off this undocking until 

Hawaii? 

HOU Yes, let's hold it off. 

CSQ 12 this is CSQ 

S/C This is 12 Bill 

CSQ Let's hold off on the undocking until you 

get to Hawaii. 
S/C Boger, we're holding off till Hawaii. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:kl PM CST, TAPE 6k 

PAGE 1 

This is Mission Control Houston at 6 hours 1 minute and 13 
seconds after lift-off. We are approaching now the Hawaii 
tracking station. We should acquire in the next few seconds. 
Meanwhile, the decision has been made here in Mission Control 
to omit the primary propulsion system burn of the Agena target 
vehicle which would boost the combined vehicles to an apogee 
of some UOO nautical miles. The earlier mentioned problem 
with the engine turbo pump is apparently of enoiagh concern 
to where it has been decided not to continue with this portion 
of the flight plan. The secondary propulsion system unit 2 of 
the secondary propulsion system will be used at a ground 
elapsed time of approximately 7 hours 5 minutes, in retrograde, 
some 5*4- feet per second delta V. This will place the spacecraft 
in proper phasing for the solar eclipse Sunday morning. However 
the hatches will remain closed during this experiment or during 
the eclipse and there will be no ultraviolet photography possible. 
Let's join the Hawaii-to-spacecraft Gemini 12 conversation at this 
time. 

S/C Roger, be informed that while we are under Agena 

control flight control mode 1, that we have 
actually rolled about 15 degrees during this pass 
between CSQ, and Hawaii. 

HOU Roger, Okay. 



GEMINI 12 MISSION COMMENTARY, 11/ 11/ '66, 8:U7 PM CST, TAPE 6k 



PAGE 2 

S/C Roger, we will commence with the unlocking. 

HOU Okay. Hawaii, Flight. 

HAW Go Flight. 

HOU He said he rolled 15 degrees in flight control 

mode 1. 

HAW We concur on the ground here too. 

HOU Does he think it is an Agena problem? 

Did he have the CAMS off? 
HAW Yes, he had the CAMS off, there is no doubt 

about it. 

HOU And he rolled 15 degrees in flight control 1? 

HAW That is affirm. Strictly out of the Agena. 

HOU And how is pitch and yaw? 

HAW They look good from here. It looks like it is 

just roll. 

HOU Okay, any way of telling what you think it 

might be? 

HAW^ Okay, we have got an indication of spacecraft free. 

HOU What? 

HAW It looks like he starting to undock. 

HOU Okay. 

HAW No, we don't know what it is yet, Flight. 

Gyro 2 turned back on. On the spacecraft. No 
thruster firing on the spacecraft at all. 



GEMINI 12 MISSION COMMENTARY , ll/ll/66, 8:^7 PM CST, TAPE 6k 



PAGE 3 

HOU Roger, Hawaii. 

S/C Hawaii, this is 12. Undocking successful. 

HAW Roger, very good. 

S/c I was able to give our control a slight workout 

before we redocked to see if there is anything 
wrong . 

HAW Okay, we are standing by. 

S/C Touchdown. Down firing thruster. 

HOU Hawaii Com. Flight- Send us Gemini continuancy 

Alpha's during the control exercise. 
HAW Okay. 

HOU How does it look to you? 

HAW Looks good, doesn't seem to be any problems at 

all. 

HOU What is the Agena doing? Holding in roll? 

HAW We had quite a lot of thruster firing on 

jet no. - that is still off on roll. The Agena 

thinks it is coming back in now. 
HOU Okay. 

HAW It looks like we are going to miss our dump on 

the Agena here. 

HOU Okay. Can you send us a couple of Agena sums 

please? 

HAW Which kind? A lot of yaw left activity here, at 

the present. 



GEMINI 12 MISSION COMMENTARY, ll/H/66, 8:V7 PM CST, TAPE 6k 



PAGE k 

HOU Where? Spacecraft or Agena? 

HAW Spacecraft. No, it is looking okay. 

HOU What control modes is he using now? Hawaii. 

HAW We are showing rate command. 

HOU Okay. 

HAW Okay, we are going to send reset timer reset 

command. 
HOU Okay. 

HAW • 12 Hawaii. At the present time we are transmitting 

reset timer reset to the spacecraft - I mean to the 
Agena. 

S/C Roger. 

HAW Okay, you can turn your encoder back on. 

S/C Encoder was on, Hawaii. 

HAW It was? Oh Oh, we have indication on the ground 

that it wasn't. Flight we are not showing encoder 
lock at all on the ground. We Bent the command 
and it was verified. 

S/C The encoder has been on. 

HOU He said the encoder was on? 

HAW Yes, it is obvious it isn't at all or at least it 

isn't locked on. 

HOU Okay, he thinks the encoder is on from the switch 

and we are getting commands through. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:U7 PM CST, TAPE 61+ 



PAGE 5 

HAW Hold on. The control modes looks real good. 

HOU Okay. 

HAW 12, Hawaii, you might he advised that our command 

got into the Agena okay. 
S/c Roger, you feel there is anything wrong with our 

encoder? 

HAW Yes, it kind of begins to look that way. 

HOU Well, he has had satisfactory control with it 

has he not, Hawaii? 
HAW Well, I don't know whether he has done any 

controlling recently. I will check right here. 

12, Hawaii. Have you done any controlling 

recently, oh oh, it locked now. 
S/C Say again, Hawaii. 

HAW We are showing encoder locked at the present 

time. 

S/C Okay, roger. We concur. 

HAW Roger. Okay. 

HOU What does he concur with, that it is on? 

HAW Yes, he concurs it. Apparently he did have 

it off. 
HOU Okay. 

HAW Pitch horizon sensor showing off-scale low. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:47 PM CST, TAPE 6k 



PAGE 6 

HOU Okay, is he satisfied with the control system? 

HAW 12, are you satisfied with the control system? 

S/C Roger, we checked it out and pulse and rate 

command and the control system is go. 
HAW Okay, it looks like you turned it back off. 

HOU Okay, would you tell them about the PPS. 

S/C ...control system is off. 

HOU And the SPS phasing for the eclipse. 

HAW Okay. 12, Hawaii. You are no go for the present 



time on the PPS burn. Instead of doing that we 
are going to do an SPS retrograde burn of approximately 
5*4- feet per second at an elapsed time of 5 - 7 hours 
5 minutes and this is to rendezvous with eclipse at 
roughly 16 hours. 

S/C This is 12. Let me see now.. We are no go at the 

present time for a PPS burn and we are going to do a 
retrograde SPS burn at about 7 hours 5 minutes to 
rendezvous with .... 

HAW That is roger and it will be a 54 foot per second 

burn. 

S/C Okay. Roger, the eclipse sky goes after all. 

HAW Yes, it kind of looks like it. 

I don't know Flight, we are still a little unhappy 

with this Agena. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 8:U7 PM CST, TAPE 6k 

PAGE 7 

HAW Thinking about it. We are thinking about it some 

more. 

HOU What do you mean? 

HAW Oh, it looked like it was coming back in but it 

seems to be wondering around. 12, Hawaii, we will 
have LOS here in about another 30 seconds. 

S/C Roger, Hawaii. 

HOU Ask him how he likes the Agena. Are you talking 

about the roll axis? 
HAW Does the Agena look stable to you from where you 

are? 

S/C This is 12... 

HAW LOS Flight. 

This is Mission Control Houston. We have had loss of signal at 
Hawaii station. The apparent problem in the control system seems 
to have been resolved as being either the thrusters from the Gemini 
during the undocking causing the Agena to move about a bit or physical 
bumping of the Agena by the nose of the spacecraft which caused the 
erratic attitude indications on telemetry at the tracking ship Rose 
Knot at the beginning of this last revolution. As 1 further flight 
plan updates come along we will pass them up to you on the exact times 
of the secondary propulsion system burn during the upcoming pass over 
the tracking ship Rose Knot. There is an eat period scheduled at 6 hours 
11 minutes and 33 seconds after lift-off. This is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:13 P-m- TAPE 65 

PAGE 1 



This is Mission Control Houston, six hours, 27 minutes after 
liftoff. We have had electronic contact with the spacecraft 
Gemini 12 from the tracking ship Rose Knot. Flight Director 
Glenn Lunney at the present time is issuing instructions to 
the spacecraft communicator on board the RKV for passing up 
to the crew. Let's join that conversation now. 



HOU U25 is 90U3O, the VM word, the index 531 and 

from LSB to MSB 000 100 101 000 000. 
Rj(V Roger, I'll read back. 

531 000 100 101 000 000. 
HOU Roger. Have your man confirm that that is 

k3 feet a second , have the crew toggle in 

and verify it. 
RKV Roger, Roger. 

RKV Okay, we have both vehicles in GO and heading 

000 .... Agena. 
HOU Say again RKV . 

RKV We can tell the Agena is 000, FC-2, both 

vehicles GO. 
HOU Roger 
RKV Gemini 12, RKV 

S/C Go ahead RKV, 12 here. 

RKV Okay, I have information for your burn, ready 

to copy. 

S/c Roger, standby one. 

RKV Is that an SPS Unit 2 bum on the Agena. 

HOU That's right, that's affirmative SPS Unit 2. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:13 P-m. TAPE 65 

PAGE 2 



RKV Roger, Purpose - horizontal retrograde burn 

GIT 07 05 06, Delta. V >3 feet per seconds. 
Delta T 51 seconds. 2590U3O, thrusters 
SPS unit 2. Your VM word that you toggle 
in will be 531 000 100 101 000 000. Did you 
copy. 

S/C Roger. Understand the purpose of the burn is 

a horizontal retrograde SPS. GET of the burn 
is 07:05:06, Delta V U3 feet per second, 
Delta T 51 seconds. 2590U3O, thrust 26270, 
thrusters SPS Unit 2. Maneuver "and retrograde 
VM word 531 000 100 101 000 000. 



RKV Roger, you copied correct. 

HOU Have him go ahead and load the VM and verify 

it. 

RKV Roger, would you load the VM and verify it. 

S/C Roger. 

RKV . . . garbled . . , on dock. S-Band wide , purge 

is low- 000. 

HOU Have him gyrocompass around after they've got 

that loaded. Gyrocompass around to 180. 

RKV Alright Gemini 12, RKV. Would you have that 

VM ordered in, would you gyrocompass around to 
0180. 

S/C 12, Roger. 



GEMINI 



12 MISSION COMMENTARY, ll/ll/66, 9:13 p.m. TAPE '65 

PAGE 3 



S/C RKV , Gemini 12, the VM word is in if you 

detected. 

RKV Roger. 

HOU Verify that word RKV. 

RKV Will do Flight. 

RKV Roger, it checks Flight. 

HOU Roger. Can you verify this h3 feet per second. 

RKV Negative Flight, we have not verified that 
yet. 

HOU Have somebody do that. 

HOU RKV, Flight. 

RKV Go ahead Flight. 

HOU Has he started to bring it around yet. 

RKV Roger, Flight, he's bringing it around now. 

HOU Okay, what flight control mode. 

HOU What flight control mode are you in RKV. 

RKV Standby Flight. He is not in proper mode, 

he is in S-Band now. 

HOU Say again. 

RKV He is not in a proper mode, he is in S-Band 
Wide. 

HOU Okay, is he coming around. 

HOU RKV is he.. 

RKV (garble) 

HOU Say again. 

RKV He's is a control mode for plus 90. 

HOU Okay. 



GEMINI 12 MISSION COMMENTARY , ll/ll/66, 9:13 p.m. TAPE 65 

PAGE h 

RKV He is coming around to plus 90 then he will 

go to 180. 

HOU Okay, does it look like it's going alright. 

RKV Roger, Flight. 

HOU Okay 

RKV 12, RKV, (garble) minus 1, VM checks on the 

ground. 

S/C Roger, VM checks on the ground. 

RKV Okay 

S/C We are gyrocompassing around. now. 

RKV Flight, reset that VM to 42.62. 

HOU Roger . 

RKV He says he is gyrocompassing now. 

They are off scale low. He looks like he is 

doing alright now, Flight. 
HOU Okay. 

RKV LOS on Gemini, this is RKV . 

This is Mission control Houston, we have loss of signal from 
the tracking ship Rose Knot of both spacecraft. The next 
station to acquire will be the Tananarive voice remoting station 
in some 20 minutes from now. We'll come back up at that time 
with the conversation between the spacecraft communicator here 
and Mission Control and Gemini 12. At 6 hours, 36 minutes and 
12 seconds after liftoff, this is Mission Control 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:*+3 pm CST, TAPE 66, PAGE 1 



This is Mission Control Houston at 6 hours, 56 minutes and k seconds 
after liftoff. We're standing by now for a voice remoting from 
Mission Control here in Houston through the Tananarive tracking 
station. Pete Conrad is now putting in a call to the spacecraft 
through Tananarive. Let's join the conversation now. 
TAN Tananarive, over 

S/C Roger, this is 12. 

HOU Okay, I've got a little word for you here. After 

you're burn, we'd like you to, at your convenience 
purge fuel cells no. 2 then fuel no. 1, and you 
can go ahead after you purge and power down. We 
intend to give you your flight plan update for the 
rest of the evening at the CSQ and if you're ready 
I'll give you node update here. 

S/C Roger, 10... We're having some trouble with gyro 

compassing the Agena. It doesn't seem to want to 
hold. 

HOU Okay, are you in flight control mode 1 or 2? 

S/C It's been going from 60 to 30 degrees either side 

of the proper heading. 
HOU Okay, are you in flight control mode 1 or 21 

S/Ce Flight control mode 2. 

HOU Okay. Does he think it's satisfactory for the burn? 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:^3 pm CST, TAPE 66, PAGE 2 



12, Houston. Has it been doing this in flight 
'■ control mode 21 
S/C That's affirmative. It does the same thing in 

flight control mode 1. 
HOU Okay. You're trying to tell me that you don't 

think it's satisfactory to do the burn. Is that 

correct? 
S/C Say again? 

HOU I say, you're indicating to me that you don't think 

it's satisfactory to do the burn. 
S/C That's affirmed with the Agena control. Right now, 

she's just rolled 1+0 degrees to the left of the 

proper heading. 
HOU Did you say roll or did it yaw? 

S/C Sorry, yawed hO degrees and rolled about 15. 

HOU Rolled about 15? 

S/C Affirmed. We used the gyro compass alright in the 

right direction but then it overshoots when we get 
it settled down, it then starts to drift off about 
30 or kO whether we're in flight control mode 1 or 2. 
On the burn, I think we could probably do it with 
the spacecraft flight command. Over. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:^3 pm CST, TAPE 66, PAGE 3 



HOU Okay, why don't you quickly go to gyro compassing 

at the proper heading there is FC-7 once. And see 
if it holds in FC-7. 

S/C Roger. 

HOU 12, Houston. 

S/C Go ahead Houston. 

HOU How's FC-7 doing? 

S/C We're trying to get it back to the proper heading 

with spacecraft control so I'll put FC-7 initial mode. 
HOU Okay, now when you say get it back to the proper 

heading, are you satisfied that you got a good 

platform alignment? 
S/C Roger, we have a good platform alignment just out 

the window here. 
HOU Okay. 12, Houston. 

S/C Go ahead. 

HOU Okay, we only have about 2 minutes and 30 seconds 

on this pass. If it doesn't look good in flight 
control mode 7, we want you to make the burn with 
your OAMS system, but set up ^1.5 fps for the OAMS. 

S/C Do you want us to use our OAMS fuel to set up this burn? 

HOU Say again. 

S/C Do you want us to use to use our OAMS fuel to set up 

that burn? 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 9:^3 P«n CST, TAPE 66, PAGE ^ 



HOU That's affirmative. On your computer set up 

feet per second in address 25, vice the number 
of feet per second giving you in the velocity meter 
load. 

S/C Roger. If we burn SPS, what do you want us to have 

in address 25? 

HOU We passed you. We would appreciate it if you could 

get into PC-7 before this pass is over. We've got 
1 minute and 30 seconds. We'd like to know which 
way you're going to go. 

S/C Roger. We're in flight control mode 7 right now, 

and it looks like it's holding within about 5 degrees 

HOU Okay, 12. Is is oscillating 5 degrees? 

S/C Negative, it seems to be holding pretty steady right 

now. 

HOU Okay. Because in FC-7 it should be locked in tighter 

than a drum. Okay, we only have 30 seconds. What 
do you think? 

S/C We're going to purge flight control mode. We're 

going to purge into SPS. Standby. 
HOU Okay, just use your checklist there, attitude 

control, rate command and the power switch off. 

She gets away from you, take it over with the Gemini. 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 9:^3 pm CST, TAPE 66, PAGE 5 



S/C Affirmed. 

This is Mission Control Houston at 7 hours and k minutes 50 seconds 
after liftoff. We've had loss of signal through the Tananarive voice 
remoting station. We're coming up now on the time that the secondary 
propulsion system burn is scheduled. Mark. .they should begin the 
burn at that time. We'll have confirmation of this burn and the 
results during the pass over the Coastal Sentry later on in this rev, 
which is due in about 13 minutes from now. This is Mission Control 
Houston. 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 10:05 PM CST, TAPE 67 

PAGE 1 

This is Mission Control Houston at 7 hours 18 minutes 5k seconds 
after lift-off. We have just now come into the acquisition area 
of the tracking ship Coastal Sentry for what may be the last pass 
of the evening in which the crew will still be awake. They are 
going to bed about an hour earlier than previously scheduled so 
that they can get awake 2 hours earlier in the morning for the 
eclipse which will occur at 16 hours 2 minutes ground elapsed 
time. Let's tie in now with the conversation between the space- 
craft communicator aboard the Coastal Sentry and the crew of 
Gemini 12. 

CSQ Agena is go. 

HOU Say again. 

CSQ The Agena is go. 

HOU How does it look to you. In attitude all right? 

S/C This is 12 say again. 

CSQ Gemini 12, CSQ. 



S/C 



CSQ. . 



CSQ 



How did the burn go? 



S/C 



Roger, we burned the Agena... we burned it in 



flight control mode 7 with the Agena control. 



Address 8 shows is with the platfdrm it was not 



aligned at rendezvous . ... zero zero zero 1281300 



028 82 reads minus 0019 . Yaw attitudes real good. 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:05 PM CST, TAPE 67 



PAGE 2 

S/C We have recaged the platform to the Agena 

attitude now. Looks like it was about 2 or 
3 degrees off. And all the attitudes are 
quite well now. 

CSQ Roger. Flight, CSQ. 

HOU Go ahead. 

CSQ Okay, attitude is 01800. 

HOU 01800? What flight control mode is he in? 

CSQ FC-1 

HOU Okay, and does the vehicle look all right. Holding 

its attitude about right? 
CSQ It looks good right now. We want to keep a good 

look on it. 

S/C CSQ, Gemini 12. Can you tell us whether it was 

a VM shutdown or whether we shut it down. . . 
HOU Say again. 

CSQ Did you turn the encoder off? 

S/C Encoder off. 

HOU Another Gemini main please. 

CSQ 12, CSQ. 

S/C CSQ, 12 go ahead 

CS<k Have a lock up date and flight plan update for 



GEMINI 12 MISSION COMMENTARY , ll/ll/66, 10:05 PM CST, TAPE 67 



PAGE 3 

CSQ you when you are ready to copy. 

S/C Roger, stand by a minute. This is 12, ready 

to copy. 

CSQ, Okay, here it is 6-3 Aplha, 08 35 01, 19 plus 17 



2k plus 50. All bank angles.. 80 roll right 100. 
The weather in all areas is good and a SEP 
maneuver is required for all areas. Area 7-3 
Bravo. 10 10 U7, 18 plus ^9> 24 plus 36, area 
8-Alpha Charlie, 11 06 38, 20 plus Ok, 22 plus 
kk. Area 9-Alpha Charlie 12 kO 2k, 20 plus 06 
22 plus kl. Area 10-2 Bravo. Ik ik 08, 20 plus 0*4-, 
22 plus 39. Area 11-Alpha Charlie. 15 50 31 > 
19 plus 59 > 23 plus 53. Area 12 -Alpha Charlie 



17 26 18, 19 plus kQ } 2k plus 38. Do you copy? 
S/C This is 12, I copied the updates. 

CSQ Okay, and I have a flight plan update for you. 

S/C Roger, go ahead. 

CSQ, 57 plus 30 start sleep period, 8 plus 05 ground 



...S-12 door will be opened, ik plus 20 ground 
ECS S-12 door closed and locked, ik plus kO end 
of sleep period. Ik plus k2 flight plan update 
over Canary. Do you copy? 

Roger . I have copied ... 8 plus 05 S-12 open and 
Ik plus 20 S-12 closed ik plus kO sleep, lUplus ^2 
flight plan update. 



GEMINI 12 MISSION COMMENTARY, H/ll/66, 10:05 PM CST, TAPE 67 



PAGE U 

CSQ Roger, we realize you have been busy tod*y, 

but have you had a chance to drink any water. 

S/c Roger, we have had some water and drank about 

8. . .water. 

CSQ ..Charlie. 

S/C A sub for the brownies. 

CSQ Roger. 

S/C The pilot finished everything and that is.. 

CSQ How much water? 

S/C The gun is now reading 8l^. Do you by any 

chance have our inertial reading? 
CSQ Stand by. 

HOU 715. 
CSQ Say again Flight. 

HOU 715. 

CSQ We don't read you Flight. Say again. 

HOU 7 15. 

CSQ Roger . 

HOU CSQ Flight 

CS$ Go ahead Flight. 

HOU Ask him if the purge went all right and is 

he powered down. 
CSQ 12, CSQ 



GEMINI 12 MISSION COMMENTARY, 11/11/66, 10:05 PM CST, TAPE 67 



PAGE 5 

S/C CSQ, 12, go. 

CSQ Did the purge go all right? 

S/C We haven't had enough time yet. Sorry. 

We are coming up on LOS. 
HOU Have them go ahead and do that. 

CSQ Flight, CSQ. 

HOU Go ahead. 

CSQ I didn't have enough time Flight, he is 

LOS. 

HOU Okay, was he still - what was still on at your 

LOS? 

What equipment. 
CSQ The computer was on, he was rate command, 

HOU Was the platform on? 

CSQ Platform was on. 



This is Mission Control Houston at 7 hours 27 minutes and UQ 
seconds after ligt-off. We have had loss of signal on both 
spacecraft over the tracking ship Coastal Sentry. We will be 
coming up overrHawaii at - in approximately 10 minutes from now. 
We will stand by to see if there is any further conversation before 
the crew takes their rest period for the night. This is Mission 
Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-11-66 pm CST Tape 68 Page 1 

{OX? 

This is Mission Control Houston at 7 hours 37 minutes and k seconds 
after liftoff. We have just now come in to the acquisition area 
of the Hawaii tracking station with both the Gemini spacecraft 
and the Agena Target Vehicle. We are standing by now for con- 
versation between the spacecraft communicator and Hawaii and the 
crew of Gemini XII. This will likely be their last pass over 
a station in which they are awake, or at least they will go in 
to a rest period shortly thereafter. Let's join that conver- 
sation now. 

HAW Roger, we've got a bunch of items we would like 

to clean up here. First of all I would like to 
get started is a purge. We are also showing 
02 to H2 Delta P lights on. 

S/C Roger, we have just completed a purge. We are 

in the process now of powering down both Delta P 
lights are on... Would you believe that. 

HAW Roger, we sure would. 

S/C Okay, mighty fine, on that. 

HAW Get the readings onboard. 

S/C I've seen this light before. 

HAW Yeah, yeah. What we'd like to know is the last 

time you reported the readings you gave us some 
information on them and at the time was the Delta P 
on when you gave the readings 1 

S/C Roger, it was. 

HAW What are they reading now? Could you give us the 

readings again then? 



GEMINI XII MISSION COMMENTARY 11-11-66 9:05 pm CST Tape 68 Page 2 

S/c Roger, on section 1 the H2 now reads about .70 

and the H 2 0 reads 2.2. 
HAW Roger, copy. 

S/C On section 2 point 65, for the H2 and HgO is 

about 2.1 2 point 1 5 • 

HAW Roger Thank You 

S/c Seems to be within the limit, I'm not sure why 

the lights are on. 
HOU Yeah, it looks good here. 

HAW That's the way it was the last time too. 

HAW Thanks a lot, we're looking in to it, it's kind 

of a wild one. 
S/C Roger. 

HAW I notice you have your encoder off so we're going 

to send a command to the Agena to reset the emer- 
gency timer. 

S/C Roger, go ahead. 

HOU Okay. 

HAW Okay, we've got it. I guess there is no need to 

turn the encoder on is there. Since he's already 
separated . 

S /c Roger , ready to turn the encoder back on . 

HAW Roger, go ahead. Is he docked? 

HOU Hawaii we need some summary from you and a con- 

tingency Charlie in the Agena. 
HAW Roger 



GEMINI XII MISSION COMMENTARY 11-11-66 9:05 pm CST Tape 68 Page 3 



HAW Hey Bud is he still docked, I was under the im- 

pression they had already separated. 

HOU No, he should be docked. Why should he be separated? 

HAW Oh, that maneuver was done with the spacecraft in a 

docked configuration. 

HOU Affirmative. .. .that' s alright Hawaii let's see if 

we can get the rest of this done on this pass. 
How about the PQI and the purge? Did he get the 
purge in yet. 

HAW That's firm, he's completed it. 

HOU Okay, PQI before he goes to sleep. 

HAW Okay, could we get the PQI Gemini 12? 

S/C Roger, PQI is 55 percent. 

HAW Roger copy 55. Thank you. 

S/C Anything else. 

HOU We need some Agena summaries from you. 

S/C We'll send them, which kind do you want? What would 

you like? 

HOU We need Agena main and Charlie. 

S/C Agena main and Charlie, Rog. 

HOU Okay, everything look alright for the night? 

S/C Yes, it sure does. 02 tank pressure is up around 

900. 

HOU Roger . 

S/C That should be good. 

HOU How does the ACS look on the Agena? 

S/C Within bands and holding. 

HOU Okay 



GEMINI XII MISSION COMMENTARY 11-11-66 9:05 p.m. CST Tape 68 

Page k 



S/C Yeah, we're showing the PPS gas that's B059 as 

2 point 06 thousand PSI. It's on a 1218 

HOU Roger . 

Hawaii from flight, is he powered down and what 
is the pump configuration? 

HAW He's got both B pumps on. He is powered down. 

HOU Hawaii from flight. 

HAW Go flight 

HOU Okay why don't you give them our best for the 

night . 

HAW Gemini 12 Hawaii 

S/C Go ahead Hawaii. 

HAW Roger, it's been kind of a busy day thanks much 

that about does it and flight says to tell you 
Good Night. 

S/C Thank you and glad the flight gave us a Delta P 

light , we feel lonely without them up here. 

HAW Oh yeah 

HOU LOS hawaii minus one. 
HAW Roger 



This is Mission Control Houston. We have loss of signal from 
the Hawaii tracking station. The crew of Gemini 12 have been 
given a "go" for sleep. It is highly unlikely that any of 
the subsequent passes during the night will be any conversation 
however, we will be monitoring the passes for spacecraft con- 
ditions. Systems conditions as indicated telemetry. At 7 hours 



GEMINI XII MISSION COMMENTARY 11-11-66 9:05 pm CST Tape 68 

Page 5 



U6 minutes and 2 seconds after liftoff, this is Mission Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll/66, 10:50 pm CST, TAPE 69, PAGE 1 



This is Gemini Control. The Gemini 12 spacecraft is approaching 
the west coast of South America at this time at 8 hours 3 minutes 
38 seconds into the mission. To recap, during the day the primary 
propulsion system burn was scrubbed, the Agena due to the probability 
of a bearing malfunction which would cause the turbo., fuel- turbo 
pumps to over speed. Therefore, the high apogee over the United States 
is out. The CAMS was burned a short while ago to enable the spacecraft 
to phase in order to get the solar eclipse pictures at 6:50 am CST 
tomorrow morning. The flight director, Glenn Lenney declared the 
sleep period as of 7 hours hk minutes into the mission , which is 
approximately 1 hour early. We estimate they will arise 1 to 2 hours 
early tomorrow morning. After they get up at an earlier time then we 
originally calculated, they will be in phase hopefully to acquire the 
eclipse photography. We did accomplish during the day, rendezvous aid 
docking which was one of the major aims of our flight, Gemini 12. 
They did accomplish the VL-kOQ experiment which is to measure radiation 
around the spacecraft, While going through the South Atlantic anomaly 
At 8 hours 5 minutes 1? seconds into the mission, this is Gemini control. 

END OF TAPE 



GEMINI 12, MISSION COMMENTARY, 11/12/66, TAPE 70 , PAGE 1 

This is Gemini Control. Nine hours, 23 minutes, 32 seconds 
into the mission of Gemini 12. Hawaii has lost signal with 
Gemini 12 at nine hours, 18 minutes into the mission. There 
has been no voice contact with the Gemini 12 astronauts since 
the sleep period was declared seven hours, hh minutes into the 
mission. The Black team has now gone off duty. The Blue 
team is now on duty here at the Control Center. Gene Cranns 
is acting as Flight Director. We have De|^W Slayton sitting 
in as Cap Com with astronaut Bill Anders asisting. During 
the night this team will recalculate the flight plan for 
tomorrows activities. The S-12 experiment, the micrometero- 
rite collection experiment door has been opened at sometime 
shortly after 11:00 o'clock Central Time this evening by a 
ground signal. At 11:^5 this evening, 1+5 minutes pass the 
hour, Costal Sentry reported that both crew men are asleep. 
Hawaii reports that Gemini and Agena look good from telemetry 
and that if the Agena is rolling, it is rolling very slowly 
so it appears to be stabilized. The weather forecast for 
tomorrow appears to be in the dash one or primary area off 
the East coast of America, 8 to 10 foot swells , 5 to 7 foot 
waves, 25 knot winds, the ceiling is forecast to be 1000 foot 
scattered. This is acceptable, but not too good in that area, 
In the East Atlantic, in the West Pacific and in the Mid- 
Pacific landing area, the weather appears to be good and is 
forecasted to remain good through tomorrow. At 9 hours, 
25 minutes , hi seconds into the mission of Gemini 12, this is 
Gemini Control. 
END OF TAPE 



GEMINI 12, MISSION COMMENTARY, 11/12/66, TAPE 71, PAGE 1 

This is Gemini Control. Ten hours, 3 minutes, 31 seconds into 
the flight of Gemini 12. Ascension has lost the signal of 
Gemini 12 spacecraft, ten hours and one minute into the 
mission. There has been no voice contact with the astro- 
nauts in the sleep period. The sleep period has been going 
on now for approximately two hours, twenty minutes. Astro- 
naut Lovell's heart rate is 6^ beats per minute. Astronaut 
Aldrin's heart beat is 58 beats per minute. The breathing 
rate for Astronaut Lovell is 12 per minute and for Astronaut 
Aldrin it is 12 per minute. Both astronauts were reported 
asleep at one hour and five minutes ago. Information has 
reached us that tomorrow morning when the endeavor to take 
eclipse photography, the position will be 6.5 degrees South, 
82.1 degrees West. That puts them right at the coast of 
South America, That will happen 16 hours, 2 minutes, 3 seconds 
into the mission of Gemini 12. This is Gemini Control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, H/ll/66, 1:50 am CST, TAPE 72, PAGE 1 



This is Gemini Control at 11 hours 3 minutes 31 seconds into 
the flight of Gemini 12. The position of the spacecraft is 
approaching the Rose Knot ship off the South American coast. 
We still have no voice contact with the astronauts in the sleep 
period. They have been in the sleep period now for approximately 
3 hours and 20 minutes. Astronaut Lovells heartrate is k& beats 
per minute. Astronaut Aldrins heartrate is 50 beats per minute. 
The breath rates are: Lovell lU per minute, Aldrin lh per minute. 
Doctor Hawkins, the NASA doctor on duty here in the Control Center, 
advises that they are both sleeping soundly. The apogee at this 
time of the spacecraft in 153 «8 miles, the perigee is 139 miles 
The Gemini 12 spacecraft, as we said, is in the sleep period; 
however, it's quite evident here in the control center that nobody 
here is sleeping. Gene Kranz, acting as flight director, and 
the staff support rooms are busily engaged in updating the flight 
plan for tomorrow. At 11 hours k minutes 51 seconds into the 
flight of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, H/ll/66, 2:50 am CST, TAPE 73, PAGE 1 

This is Gemini Control, 12 hours 3 minutes 31 seconds into the 
mission of Gemini 12. We're in the 9th revolution over China 
approaching the eastern coast of China. Coastal Sentry ship will 
acquire the spacecraft with telemetry at 12 hours k minute h6 
seconds into the mission. We still have no voice contact with 
the spacecraft, still being in the sleep period. They have been 
in this sleep period now for some h hours 20 minutes. We assume 
that they have been asleep for at least 3 hours and 5 minutes 
since the Coastal station confirmed that fact 3 hours and h minutes 
ago from readouts. They are still docked on the Gemini. We 
have a report that a low pressure area is being watched by the 
National Hurricane Center at Miami. At 5:30 EST this morning 
an aircraft will investigate this low pressure area to make a 
determination on it and see what it actually is. We know that 
the predicted weather for tomorrow in the -1 or western Atlantic 
area should be about 2,000 feet broken. We should have about 
25 winds. We should have 8 to 10 foot swells with 5 to 7 foot 
waves. This is acceptable, but not most desirable for a landing 
situation. At 12 hours 5 minutes 15 seconds into the mission of 
Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, ll/ll/66, 3:50 am CST, TAPE jk, PA;GE 1 



This is Gemini Control, 13 hours 3 minutes 3k seconds into the 
mission of Gemini 12. The position of our spacecraft now is 
approaching the west coast of Africa. Our Ascension tracking 
station will acquire in less than 1 minute from now. We still 
have no voice contact with the crew. The sleep period began 
5 hours 20 minutes ago. For a short recap on the first days 
activities in Gemini 12 flight, we did accomplish rendezvous 
and docking, a main objective in Gemini 12. We accomplished 
M-l+08 experiment, which is a Beta Spectrometer. To measure 
radiation while the spacecraft is going through the South 
Atlantic anomaly, that was accomplished. The crew went to 
sleep one hour early - or correction, their sleep period 1 hour 
early. Also, during the first day of this mission, we did not 
have a primary propulsion system burn on the Agena which would 
have heightened our apogee to some 1+00 nautical miles over the 
United States for photographic reasons . We did not have that due 
to the probability of the fuel turbo pump varying malfunction. 
Therefore, we will not have that high apogee phonography on the 
mission. We did have a secondary propulsion systems Agena burn 
in order to phase the Gemini 12 to be in position where the Solar 
Photography at 16 hours and 2 minutes into the flight. At this 
time, the apogee of Gemini 12 is l^k nautical miles, the perogee 
is 139 nautical miles, approximately. The crew will arise at 
approximately Ik hours k2 minutes or 1 hour kO minutes from now. 
The eclipse photography at 16 hours and 2 minutes into the mission 
should be accomplished approximately 3 hours from now. After that, 
they will engage in the preparation ana then the accomplishment of 



GEMINI XII MISSION COMMENTARY, li/ll/66, 3:50 am CST, TAPE lk, PAGE 2 

the first standup EVA, or extra vehicular activity for astronaut 
Aldrin. This should last some 2 hours 18 minutes during which 
time j, he will accomplish the S-13 experiment which is a photographic 
experiment to photograph star fields for the purpose of investigating 
ultraviolet regions in these star fields. After that, they will 
close the hatch, repressurize the spacecraft and go on with the 
mission. There is a low pressure area being watched by the National 
Hurricane Center approximately 1300 nautical miles southeast of 
Cape Kennedy at positioning of 2k degrees north. 60 degrees west. 
That is on the eastern edge of our prime or -1 landing zone. The 
weather forecast for that area for tomorrow, is 2,000 feet scattered 
8 to 10 foot swells, 5 to 7 foot waves and 25 knot winds. This 
is not obviously an ideal landing condition. It i& acceptable, 
however. At 5:30 am this morning eastern standard time, an 
aircraft will fly out to investigate the area we just mentioned 
in our -1 landing area. We had no further word on the condition 
of that area other than what we just said that is a low pressure 
area which is being watched by the National Hurricane Center, 
At 13 hours 7 minutes ^7 seconds into the mission, this is Gemini 
Control . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, k:§Q AM CST 

TAPE 75, PAGE 1 

This is Gemini Control, Ik hours, three minutes, 31 seconds 
into the mission of Gemini 12. Gemini 12 spacecraft is now 
over the Pacific Ocean. It's in its tenth revolution. The 
Rose Knot will acquire in some 20 minutes from now. We still 
have had no voice contact with the astronauts. We're 
informed by the doctor on duty here at the Control Center 
that they are still in a sleeping state. They have been 
in sleep period for six hours, 20 minutes now. They're 
due to arise some ^0 minutes from now — lU hours, k2 
minutes into the mission. When they do arise, they will 
get prepared to accomplish the eclipse photography at 
approximately 16 hours, two minutes into the mission or 
two hours from now. Presently the heart rates stand at 
Astronaut Lovell — 15, Astronaut Aldrin — 12 per minute. 
Breath rate is Lovell — 50, correction breath rate is 
Lovell — 12, Aldrin 12. After they accomplish the 
eclipse photography, we will go in immediately to EVA 
preparations; and after that, the EVA will be accomplished. 
We do not have times on that as yet. We hope to by a few 
minutes from now. At Ik hours, five minutes, 9 seconds 
into the mission of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:28 AM CST 

TAPE 76, PAGE 1 
This is Gemini Control, Ik hours, kl minutes, 31 seconds 
into the mission of Gemini 12. The Gemini 12 spacecraft is 
approaching the coast of Africa — the west coast of Africa. 
It will come in the acquisition area of Canary Islands at 
Ik hours, U2 minutes, 30 seconds or less than one minute 
from now. At this time, it is planned to wake the crew up 
and to update their onboard systems for a burn — an SPS 
Agena burn — secondary propulsion burn to phase the 
spacecraft with the solar eclipse and pass on further 
information. We will now stand by for astronaut voice 
contact with the Canary Islands tracking station. 

CYI Canary says TM solid both vehicles. 

HOU FLT Roger. We're go. Roger, Canary, have 



at it. 



CYI 



Gemini 12, Canary Cap Com. Gemini 12, 



Canary Cap Com. Gemini 12, this is 



Canary Cap Com. 



s/c 



Canary, this is 12. You're loud and 



clear. How me? 



CYI 



I hear loud and clear. Good morning. Did 



you have a good sleep. 



s/c 



Oh, so so. Not bad. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:28 AM CST 

TAPE 76, PAGE 2 
CYI Ok. Could you turn your encoder on, 

please. We're going to update the VM 

mode for a burn. 
S/C Roger. 

CYI OK. We have a long flight plan update for 

you. I hate to give it to you when you 
first wake up. Let me know when you're 
ready. 

S/C Roger, Canary. This is 12. Ready to copy. 

CYI OK. First of all, I'd like to check the 

positions of your spectrometer switches. 

S/C Roger. X-May Is on, and the Beta is 

CYI OK. . Would you turn both of them to the 

off position, please. 

S/C Roger. They're both off. 

CYI OK. We got a good VM word in your ... you 

can turn the encoder back on. And I'll give 
you your Agena maneuver update here. The 
purpose is eclipse phasing. The GETB is 
15 16 18. Delta V is 15.O. Delta TB — 
18 seconds. Thrusters for SPS — unit two. 
Maneuver GDA forward posigrade. Over. 

S/C Roger. Understand. Eclipse phasing. GET 

a burn 15 +16 +18. Delta V — 15. 0. Delta TB 
18 seconds. Thrusters SPS unit two. GDA 



GEMINI 12 MISSION COMMENTARY, 11/ 12/66, 5:28 AM CST 

TAPE 76, PAGE 3 

forward po si grade. 

CYI OK. Now here comes the flight plan update, 

and if I don't get it all to you, we'll pass 
it over KANO. OK. Here's your eclipse 
procedure. The camera configuration — the' 
l6mm Maurer — we want the l8mm lens — F2 
at l/50 seconds, six frames per second. Use 
SO368 film. The 70mm Maurer — S.95, S 29 
back. No filter. On the super- wide 
Hasselblad. Use 80mm lens at S 11 at 1/2 50 
range infinity. Film SO368. 

HOU FLT OK, Bill. Make sure he's copied so far. 

CYI OK. Have you copied so far, 12? 

S/c Roger. Except for one thing. We don't have 

an 80mm lens on our Hasselblad. 

CYI OK. I'll go on with the rest of it, and we'll 

get back to that. Did you copy that, Flight? 

HOU FLT Affirmative. 

CYI OK. The procedure is prioritothe eclipse, 

command pilot install the window filter, and 
the pilot install the opaque sleep shade. 
Put the ACS off and align the spacecraft on the 
sun. Do you copy? 

S/C Roger. We have that. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:28 AM CST 

TAPE 76, PAGE U 

CYI OK. At 15:^8, you'll have sunrise. At 

15:51:33 enter penumbra. At 16:00 — 
l6mm Maurer on. At 16:01:1(4 — start 
total eclipse. 3?ake the following as 
possible with the 70mm Maurer. A — 
one minimum time exposure. B — one 
one- second exposure and C — one four- 
second exposure. 



HOU FLT OK. See if he copied, Bill. 

CYI Did you copy up to this point? 

S/C Roger. Say again the time after sunrise. 

CYI OK. 15:51:33 you enter penumbra. That 

should put 5:51:33 penumbra. 

S/C Roger. 

CYI OK. At 16:01:52 end total eclipse. Maneuver 



spacecraft to photograph ground shadow. Pitch 
down 25°, yaw left 135°. Keep sun off windows. 
D set the l6mm Maurer to Sl6 1/200, range 
infinity. One frame per second. 

S/C Roger. Say again after l6tnm Maurer. 

CYI OK. Set at a depth 16. Your time will be 1 

1/200. Your range infinity. One frame per 
second. 



GEMINI 12 MISSION COMMENTARY , 11/12/66, 5:28 AM CST 

TAPE 7b, PAGE 5 

HOU FLT OK, Bill. I think you're going to . . . 

CYI ... lbmm Maurer Fl6 1/200. Infinity. One 

frame per second. 
S/C Roger. 

CYI Track and photograph the moon's shadow 

with your l6mm and your Hasselblad. 
S/C Roger. 

CYI This sets your TX. Ok. About 30 seconds here 

to LOS, so I'll keep reading. 
HOU FLT Cut him off, Com Ted. Kano remote. Canary 

local. 

KNO Kano's remote, and we have acquisition. 

HOU FLT Gemini 12, Houston Cap Com, through Kano. Are 

you reading? 

3/C Roger. Go ahead, Houston. This is Gemini 12. 

HOU FLT Roger. Continuing your update at 16:10:33 -- 

exit penumbra. Set up spacecraft, 000. Agena 

0 180 0. Do you copy? 
S/Cv Roger. 16:10:33 — exit penumbra. Spacecraft 

000. Agena 0 180 0. 
HOU FLT OK. On 02 usage -- is slightly ahead of 

schedule, and with your concurrance, we'd like 

to make this SPS burn with your platform 

powered down. Over. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:28 AM CST 

TAPE 76, PAGE 6 

S/C Roger. 

HOU FLT OK. We'll be giving you a flight plan 

update at Canary at 16:16, and at your 
convenience, can you take your S3 thermo 
cover off. 

S/C Roger. We'll take the frog egg cover off. 

HOU FLT OK. Now I'm standing by for a GE time hack 

at 1^:51:30. Mark. 1^:51:30. 
S/C Roger. We're right on. 

HOU FLT OK. 

S/C Houston, This is 12. We still have both 

Delta P lights on. 
HOU FLT Roger. We understand, and as far as your 

superwide goes, leave the lens you have. Go 

with the other settings. 
S/C Roger. That's for taking the shadow. Take 

them with the same thing? 
HOU FLT Roger. Leave the lens you have on there and 

leave the settings we gave you. 
S/C How about turning off the fuel cell Delta P 

circuit breaker. 
HOU FLT Standby. You^re go for your burn. Do you 

want to check your water heater circuit breaker? 



GEMINI 12 MISSION COMMENTARY, 11/12/ 66, 5:28 AM CST 

TAPE 76, PAGE 7 

S/c How about turning on some fuel cell Delta P 

circuit breakers so we can turn the lights 
off. 

HOU FLT Stand by. We'd like to keep them off unless 

it's bugging you too bad. 
S/C 

HOU FLT We've got 30 seconds to LOS. And I say again 

on. your super-wide Hasselblad — use the lens 
you have, use your updated settings. 

S/C Roger. Understand. 

HOU FLT That ought to keep you busy. 

KNO Kano has LOS. 



BED OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:38 a.m. CST Tape 77 

Pagel 



HOU ...Mark. lU: 51:30. 

S/C Roger, we're right on it. 

HOU Okay. 

S/C Houston, this is 12. We still have Loth Delta P lights 

on. 

HOU Roger, we understand and as far as your super wide 

goes, leave the lens you have. Go with the other 
settings . 

S/C Roger, that's affirm. By taking the shadow, take them 

at the same setting. 
HOU Roger, with the--leave the lens you have on now and 

leave the settings that we gave you. 
S/C All right. How about turning off the fuel cell Delta 

P circuit breaker. 
HOU Stand by. You are go for your burn. You want to 

check your water heater circuit breaker? 
S/C How about turning off the fuel cell Delta P circuit 

breaker, so we can turn the lights off? 
HOU Stand by. 

We'd like to keep them off unless its bugging you 

too bad. 

S/C We'll leave it the way it is right now. 

HOU Okay, you've got 30 seconds to LOS. And I say again 

on your super wide Hasselblad, use the lens you have, 

use your updated settings. 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 5:38 a.m. CST Tape 77 

Page 2 



S/C 



Roger, understand. 



HOU 



That ought to keep you busy. 



KNO 



Kano has LOS. 



This is Gemini Control. We started with a conversation between 
Canary Islands updating the spacecraft and the crew. Canary Islands 
lost contact and we ended with Kano going remote and Bill Anders 
here in the Houston Control Center finishing their briefing for 
the update. During this time, they passed up camera configuration 
for the solar eclipse photography. They indicated that prior to 
eclipse, the command pilot will install window filter and the 
pilot will install an opaque sleep shade. This will be done 
obviously with doors closed, not in an EVA situation. They gave 
the times as entering the penumbra or the light shadow area as 
15 hours, 51 minutes, 33 seconds into the flight; at 16 
hours, they'll turn the 16 mm Maurer camera on. At 16 hours, 
one minute, hk seconds, they'll start the total eclipse 
photography. At 16 hours, one minute, 52 seconds, end the total 
eclipse photography. They will track and photograph the Moon's 
shadow, with the 16 mm Maurer and the Hasselblad, also, after 
this. They will exit the penumbra, or the light shadow area, 
on the other side at l6 hours, 10 minutes, 33 seconds into the 
flight. The crew was also advised that the 0^ usage onboard is 
slightly ahead of schedule, and it is our desire to leave the 
platform powered down for the SPS burn. We had an indication 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:38 a.m. CST Tape 77 

Page 3 



from the crew, when they were awakened by Canary Islands that they 
had a good sleep, it was not bad, sort of so-so. We also have an 
outlook on the weather. In the Atlantic area, the outlook for the 
tropical Atlantic west of longitude 35, the Caribbean Sea and the 
Gulf of Mexico, a low pressure system with an extensive area of 
cloudiness and showers about 800 miles northeast of Puerto Rico 
continues this morning and this will be investigated again later 
in the morning by reconnassaince aircraft. Elsewhere around the 
world, conditions seem, to be fine and normal. At lb hours, 56 
minutes, 11 seconds into the mission, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:50 a.m. CST Tape 78 

Page 1 



This is Gemini Control; 15 hours, 3 minutes, 30 seconds into 
the flight of Gemini 12. We have just given you the update and 
the astronaut contact with Canary Islands and with Astronaut Bill 
Anders here at the Control Center. They have been updated for the 
Agena secondary propulsion system burn, which should take place 
at 15 hours, 16 minutes, 18 seconds into the mission with a velocity 
change of 15 feet per second. This should affect the apogee, but 
in a very minor way. Not more than seven or eight miles. This is 
a phasing maneuver, so the Gemini 12 spacecraft will be in a 
position to take photographs of the solar eclipse. We have a 
long dry spell in front of us now between contacts. We do not 
reach another contact point with the Gemini 12 spacecraft until 
16 hours, 5 minutes, 5^ seconds into the mission, which is one 
hour from now roughly. Until that time, we assume that the updates 
are sufficient and the pilots have sufficient knowledge now from 
the ground from the Flight Controller to accomplish the mission 
of taking the solar eclipse photography. They will take that 
photography before we have contact with them in Antigua. At 15 
hours, 5 minutes, 2 seconds into the mission, this is Gemini 
Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 6:20 a.m. CST Tape 79 

Page 1 



Gemini Control Houston. Fifteen hours, 33 minutes into the 
flight of Gemini 12 now. Gemini 12 is currently making a pass 
on the southern part of the Pacific Ocean. We will have no contact 
with Gemini 12 until Antigua, which will be at some 16 hours, 5 
minutes into the mission. Presently in Mission Control, we are 
in the process of the change of shift. Cliff Charlesworth, the 
Flight Director for the green team is currently being briefed on 
our status by Gene Kranz, who has operated with the blue team 
most of last night's activities. We should have had our second 
phasing burn with the SPS by this time, some several minutes 
ago. However, we will not be able to ascertain just how that 
burn went until after our solar eclipse photography and at the 
time when we establish acquisition at Antigua. Flight Surgeon 
advises that the crew slept well last night. Both members of the 
crew, Jim Lovell and Buzz Aldrin, having some six and one-half 
hours of reasonably sound sleep. At 15 hours, 35 minutes into 
the mission now, this is Gemini Control, Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 6:U5 a.m. CST Tape 80 

Page 1 



Gemini Control Houston. Fifteen hours, and 58 minutes now 
into the mission of Gemini 12. Jim Lovell and Buzz Aldrin are 
now in their tenth revolution in this flight of Gemini 12. We 
are about four minutes away now from our attempt to rendezvous 
with a 52-mile wide shadow on the ground, the solar eclipse. This 
of course is a narrow corridor when you consider that the space- 
craft is speeding along in the order of 300 miles per minute. 
This gives us about seven seconds or so of total eclipse time. 
Now the Gemini 12 should be in the light shadow of the eclipse 
and we expect that Jim Lovell has installed his Polaroid window 
shade at this time. He has a slot at the bottom from which to 
shoot through. When we reach our total eclipse at l6:01:V* 
GET, we are going to take the following if possible with the 
70 mm Maurer. That will be one one-second exposure and one 
four-second exposure at 16:01:52; after we go out of our total 
eclipse, we will maneuver the spacecraft to photograph the 
ground shadow. At 15 hours — or 16 hours into the mission, 
this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 6:52 a.m. CST Tape 8l 

Page 1 



Gemini Control Houston 16 hours, 5 minutes into the flight 
of Gemini 12 now. We are nearing the range of Antigua tracking. 
Antigua should acquire at about 3h seconds. Fifty-four seconds 
after the minute, that is. Or some 10 seconds from now. We'll 
be standing by for that pass awaiting any contact that we might 
have with the crew which will update us as to their activity with 
regard to the solar eclipse activity. You will note on the dis- 
play -- the display that is in Mission Control now, we have an 
artist concept of what the eclipse might very well look like at 
this time. 

HOU Gemini 12, Houston Cap Com through Antigua, over. 

S/C Roger, Houston, this is 12. 

HOU Roger, how did the eclipse photography go? 

S/C Well, we hit the eclipse right on the money. 

HOU Very good. When you get the Agena squared away, 

we'd like to have you turn the encoder off. We'd 

like to do a tape dump and a — reset the timer. 
S/c Roger. We were unsuccessful in picking up the 

shadow, Houston. We couldn't pick it up by the 

time we got around the eclipse. 
HOU Roger. We figured it would be a long ways off, 

but let me know when you get the Agena lined up. 
S/C Roger . 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 6:52 a.m. CST Tape 8l 

Page 2 

HOU If you can't get it here, we'll get it over 

Canarys. And if you have a chance, we'd like 
to know was the E^O heater circuit breaker on 
and is it on now? 

S/C H 2 0 heater circuit breaker is on. 

HOU Okay, and in case you are worried about it, we 

had the S-12 door closed prior to waking you up. 
We are sorry we didn't tell you that over Canarys. 

S/C Say again. 

HOU We had the S-12 door closed by DCS prior to waking 

you up and we are sorry we didn't tell you that 
over Canarys. 

(dead air) 

Gemini Control Houston. We are still undergoing the Antigua 
pass. As you heard Jim Lovell say, they hit the eclipse right on 
the money. However, they probably did not acquire the shadow after 
they passed through the total eclipse. The ground advised Gemini 12 
that the S-12 door was closed, 
(dead air) 

HOU Gemini 12, Houston Cap Com. 

S/C Go ahead, Houston. 

HOU Roger. We got about 30 seconds to AOS. You got your 

encoder on before we could terminate the dump. Would 
you send TM off zero 3 zero and TM on zero 2 one? 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 6:52 a.m. CST Tape 8l 

Page 3 



HOU Do you copy? 

S/C Roger. 

Gemini Control Houston. We've had a loss of acquisition at 
Antigua. At 16:20 GET, the Gemini 12 crew is scheduled to enter 
their eat period. At 16:55 over Carnarvon, we will receive a 
G0/N0G0 for 30 dash 1 landing area and purge the fuel cells. 
At 17:30, we'll start standup EVA preparation. And at 19: 1*3: 30 
sunset time, the first night standup EVA will begin. At sunset, 
and that is at 19:^3:30 GET. At 16 hours, 15 minutes, this is 
Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7: Ok a.m. CST Tape 82 

Page 1 



Gemini Control Houston, 16 hours, 17 minutes into the flight 
of Gemini 12 now. We are standing by at the present time as 
spacecraft Gemini 12 passes over Canary and we are standing by for 
any conversation that might transpire with the crew. They are 
contacting the crew now. 

S/C Roger. 

CYI Okay, have a notal update and the flight plan updates 

for you when you are ready to copy. 
S/C Roger, go ahead. 

CYI Okay, your notal update time 16:05, rev 11 - 71.0 

degrees west, right Ascension, 11+32. Okay, your 
flight plan update, from 16:20 to 17:30, eat period. 
16:55 at Carnarvon, you'll have a Go/NoGo for 30 dash 
one, purge the fuel cells, section one and section 
two. We'll give the cryo 0^ and H g readout at that 
time. And they'll give you block 3 PLA update. 
At 17:30 start EVA -- standup EVA preparation. At 
17 + k5 at Antigua, we'd like the S-3 heater on. 
At 19:U3:30, sunset, first night standup EVA. S-13 
Gamma Cassiopeiae, yaw 87 degrees north, pitch 
30 degrees up. Have you copied so far? 

S/C Roger. 

CYI Okay, at 21:13:31, sunset, second night, S-13 ... 

Yaw 150 degrees north, pitch U5 degrees up. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:0h a.m. CST Tape 82 

Page 2 



And we have a note here, due to the change in the 



orbital period, activities in the flight plan have 
shifted forward approximately one-half hour at 17 
hours GET, and have shifted forward about an hour 
at 2k hours GET. 
S/C Roger, understand. 

CXI Okay, that is the end of the flight plan update. 

I'd like to get a water gun count from you. 
S/C Roger, water gun is 863. ^ 

CYI Copy 863. Okay, 12, you are go down here on the 

ground. We'll be standing by. 
S/C Roger, thank you very much. We'll be eating. 

CYI Rogefc. 

HOU Canary Cap Com, Houston Flight. 

CYI Come on in, Flight. 

HOU Roger, could you ask the crew if they took any 

water during the night? 
CYI Roger . 

HOU I mean prior to waking up, I guess, is the question. 

CYI Okay. 12, Canary. 

S/C Go ahead. 

CYI We'd like to know whether you took any water during 

the night at all? That is prior to waking up. 
S/C Roger. Perhaps 10 count. 

CYI Roger, copy. Copy, Flight? 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:OU a.m.,CST Tape 82 

Page 3 



HOU Roger, thank you. 

CYI Flight, Canarys. 

HOU Go, Canarys. 

CYI We've completed the tape dump. 

HOU Okay thank you. 

HOU Canary Cap Com, could we have an Agena contigency 

India, please. 
CYI Roger, coming up. 

HOU Canarys, could we have an Agena LOS main, also. 

CYI Roger . 

Gemini 12, Canarys, about a minute to LOS , 
S/C Roger, Canarys. 

C'_*U Houston Flight, Canary Cap Com. 

HOU Go Canarys. 

CYI Okay, we've had Gemini LOS and Agena LOS. 

Both vehicles are go. 
HOU Roger . 



Gemini Control Houston. Sixteen hours, 26 minutes, we've 
just had loss of signal with Canary. The next station to cone-act 
Gemini 12 will be Carnarvon and this will be at 16 hours, 5^ 
minutes, k3 seconds GET. Weather advises that the weather conditions 
this morning for the flight of Gemini 12 remain satisfactory and 
in most areas of prime concern, in the mid-Pacific landing zone 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:0k a.m. CST Tape 82 

Page k 



centered about 300 miles northeast of Honolulu, partly cloudy 
skies, winds east 15 knots, and seas k feet. In the west 
Pacific landing zone centered about 600 miles south-southwest 
of Tokyo, partly cloudy skies, winds east-northeast 10 to 15 
knots and seas 3 to h feet. In the eastern Atlantic landing 
zone centered about 300 miles west of the Cape Verde Islands, 
partly cloudy skies, winds 18 knots, and seas h to 5 feet. In 
the primary landing zone in the western Atlantic centered about 
800 miles east of Miami, extensive cloudiness, winds 10 to -- 
20 to 25 knots, seas 5 to 7 feet and a few scattered showers. 
An interesting meteorological feature that should be overflown 
during the day is a low pressure system with an extensive area 
of cloudiness and showers about 800 miles northeast of Puerto 
Rico. At 16 hours 28 minutes into the mission of Gemini 12, 
this is Gemini Control, Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 7:^0 am CST 

TAPE 83, 
PAGE 1 



Gemini Control Houston, 16 hours 5k minutes into the flight of 
Gemini 12 at this time. Jim Lovell and Buzz Aldrin are now 
in their 11th spacecraft revolution and Gemini 12 is making 
good an apogee of 162.9 nautical and a perigee of 139 nautical 
at the present time. We're standing by now for acquisition 
with Carnarvon tracking. Acquisition with Carnarvon should 
take place in a matter of seconds now. Over Carnarvon we 
anticipate a GO/NO-GO decision for landing area 30-1, fuel 
cell purge. We're coming in with our pass over Carnarvon 
now. . 



HOU' Roger standing by for your GO for 30-1. 

SC Roger standby. 

CRO Flight, Carnarvon 

FD Go ahead 

CRO I show oomputer is. faulty. 

HOU Roger 

SC Carnarvon, 12 here 

CRO Go ahead 12 

SC Roger, fuel cell 18 - do you want all these 

readouts . 

HOU No, we don't need them, just give us a go. 

SC Say again 

HOU Just give us a go. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 7:^0 am CST 

TAPE 83, 
PAGE 2 



SC Roger, we're GO, we've employed a little 

discrepancy. The RCS failure is about 

280 2800 psi and temperature of 58. 

HOU Roger . 

OK it looks pretty steady down here . 

SC Roger 

HOU Ok we'll give you a GO for 30-1. We'd like 

an onboard section - an onboard 02 to water, 

delta P both sections. 
SC Roger, section 1 is 2.1 that's 02 to water and 

section 2 is 2.1 also. The fuel cell delta P 

lights are out now. 
HOU OK. You can start your purge, section 1 and 

then section 2. 
SC Roger . 

HOU OK and I have a PLA update for you. 

SC Go ahead on the update. 

HOU OK. 13-1 bravo, 18 52 00, 21+00, 2k+k8, all bank 



angles are roll left 80, roll right 100, lk-1 bravo 
20 27 59, 20+31, 25+30, 15-1 alpha, 22 03 58, 
19+56, 26+08, 16-U bravo, 2k 51 U7, 21+01, 26+U2, 
17-4 alpha, 26 27 k6, 20+32, 26+OU, 18-U bravo 
28 03 1*3, 19+59, 25+21, 
CRO We've had LOS flight. 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 12, 1966 7:^0 am CST 

TAPE 83, 
PAGE 3 

HOU Roger did you get it all. 

CRO That is negative. 

Gemini Control Hcuston, we've had loss of signal over Carnarvon 
To recap a bit on our solar eclipse photography, we restate 
that Command Pilot Lovell advised our Cap Com Bill Anders that 
he hit the total eclipse righ on the money. However, with 
regard of the shadow, the Gemini 12 crew had a maximum time 
of some three minutes to turn the spacecraft and shoot towards 
the shadow. This is not very long. At that time the shadow 
was described as being over the ocean and had a very low con- 
trast ratio with the ocean. At the time of the turn the 
shadow was also a great distance off in that the inclination 
at the time was quite low. This made the task exceedingly 
difficult and as a consequence inhibited the success of our 
second priority item, and that was shooting toward the shadow 
of the total eclipse on the ground. At 17 hours" 1 minute into 
the mission of Gemini 12 this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 8:10 A. M. CST 

Tape 81+, Page 1 



Gemini Control Houston at 17 hours, 23 minutes now into 
the flight of Gemini 12. Jim Lovell and Buzz Aldrin are cur- 
rently moving across the South Pacific in their Gemini 12 
spacecraft on the tag end of their 11th revolution. Our EVA 
preparations are now scheduled to start some six to seven 
minutes from now. The time for this EVA was moved forward 
approximately or about 30 minutes because we did not, as a 
matter of fact, go into our high orbit yesterday evening and 
we wanted to continue with our same lighting conditions and 
the same star fields for the S-13 experiment. To do this, 
of course, because of our change in times per revolution period, 
we've compensated for this by moving our time table or schedule 
forward. To recap a bit, the first night's sleep in space for 
Buzz Aldrin was very good. He had some six to six and a half 
hours of useful sleep. This is the 15th day in space for 
Jim Lovell and he's taking to it as might be expected, quite 
naturally. As a matter of fact, Command Pilot Jim Lovell 
could accurately be described as the Johnny Uhitas of Manned 
Space Flight. With every pass completion Uhitas establishes 
a new football passing record and with every passing moment 
in this flight, Jim Lovell by the same token, establishes a 
new time in space record. At 17 hours, 25 minutes, this is 
Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 8:2U am CST 

TAPE 85, 
PAGE 1 



Gemini Control Houston, 17 hours 38 minutes into the flight 
of Gemini 12 now. We're standing by for acquisition at Grand 
Turk. Acquisition with Grand Turk is expected at 17 hours 
38 minutes 56 seconds into the mission. Some ho seconds from 
now. At this time Bill Anders in his discussions with the 
crew will receive, a crew status report. He will also endeaver 
to finish his planned landing area update which was cut short 
during their pass, last contact with the crew during their 
pass over Carnarvon. At 17 hours 39 minutes standing by 
for our contact with the Gemini 12 Spacecraft. This is Gemini 
Control . 

ANT AOS Antigua 

HOU Gemini 12, Houston Cap Com through Grand Turk, 



over. 



SC 



Roger Houston through Grand Turk. 



HOU 



Roger I am ready to continue your block update. 



What was the last one yon copied? 



SC 



Standby we've got to dig out the book it's in, 



we're in our EVA prep. 



HCU 



Okay, while you're doing that be advised your 



RCS B pressure looks fgood on the ground, we 



figure it is just cooling off. We'd like your 



estimate of when the delta P lights went off 



prior to Carnarvon and was that associated with 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 8:2k am CST 

TAPE 85, 
PAGE 2 



drinking any water? 
SC This is 12. It might have been Bill because 

we were fixing breakfast at that time and 

taking quite a bit of water out of the tank. 
HOU Okay, back - about how long prior to Carnarvon 

was it, do you have any estimate? 
SC Just prior to Carnarvon we believe. 

HOU Okay would you cycle your cryo quantity read 

through 02 and H2 for about 10 seconds each? 
SC Roger, 02 at this time. 

HOU Okay, would you go to H2? 

Also we'd like a crew status report from you 

when you have a chance and would you - is your 

S3 heater on? 

SC Negative S3 heater is not on yet. Wasn't that 

U5? 

HOU Okay, give us a call - you can go on now or 

give us a call when you get it. 
SC Roger, do yon want to MARK on it? 

HOU No just turn it on. 

SC S3 heater coming on, 2, 1, MARK 

HOU Roger 

SC Start passing your updates. 

HOU Okay, what was the last one yon got? 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 12, 1966, 8:2^ a.m. 

TAPE 85, 
PAGE 3 



HOU Gemini 12, Houston Cap Com. what was the last 

one you copied? 
SC Standby 1. 

HOU Gemini 12, Houston, you can go off on your 

cryo quantity alnytime you want. 
SC Roger, going off. Do you want the frog egg 

cover put back on? I assume you do for this 

EVA. 

HOU That is affirmative. 

SC Roger. 

ALDRIN 18 k Baker last one. 

HOU Roger, got one more. 19-U Charlie, 29 kO 03, 

19+15, 2k+0&, over. 
SC Roger, I copied, 19-h Charlie. 

HOU Roger. 

HOU We're standing by for a crew status report, when 

you are ready, Gemini 12. 
SC Houston, 12. 

HOU Go ahead 12. Go ahead 12 Houston here. 

SC Roger, we have both completed meal 2 alpha, water 

gun is reading 985. We have consumed about the 
same amount of water. Sleep was about 2 hours 
solid apiece. 

HOU Roger copy. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 8:2U ant CST 

TAPE 85, 
PAGE k 



LOS Grand Turk. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 8: 3^ A. M. CST 

Tape 86, Page 1 



HOU 



Gemini 12, Houston Cap Com. One minute 



to Antigua LOS and standing by. 



s/c 



Gemini 12, roger. 



ANT 



LOS Antigua. 



Gemini Control Houston. We've just had Loss of Signal 
with Antigua with the Gemini 12 crew. One point of clarifi- 
cation, the crew indicated that they received two hours of 
solid sleep. Our indications here are that they were in a 
good reasonable rest condition for a somewhat longer period 
than that. The indications readings from the medical console 
on the ground indicate that they had a very restful period 
indeed. We don't expect too much in the way of conversation 
with the crew for awhile. This will be a most busy time for 
astronauts Lovell and Aldrin. They have a seven page EVA 
preparation check list to contend with which should occupy 
most of their time. They'll be doing such things as assuring 
the readiness of their suits for EVA configuration, making 
sure the camera gear is ready, the handrail for tomorrow's 
EVA will be unstowed. It's to be positioned today during the 
dayside pass. And the thermo cover for the frog egg experiment 
which was mentioned will be put back on to provide protection 
for this experiment while the hatch is open. To quickly run 
down what our schedule in ground elapsed time looks to be for 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 8:3^ A. M. CST 

Tape 86, Page 2 



milestones leading up to EVA, at 19.10 ground elapsed time 
over Texas we should give a go for depressurization. At 
19:23 ground elapsed time, assuming all is going well, the 
crew will start their depressurization of the spacecraft. At 
19:28 or thereabouts the hatch should be opened. This would 
be prior to sunset. And at 19:U3:30 the - during the first 
night pass - astronaut Buzz Aldrin would start on his S-13 
experiment. We're now picking up Canary. We expect little 
or no conversation during this pass but we'll stand by for 
any that transpires. 



CYI Houston Flight, Canary Cap Com. 

HOU Go ahead. 

CYI Okay, we're showing dead bands narrow on 

the Agena. There supposed to be a next 
configuration at this time? 

HOU I think there should be an FC2. Stand by. 

CYI Okay, they're in FC2 right now. 

HOU That's correct, Canary. 

CYI Roger. 



This is Gemini Control Houston. We have had no contact 
with the crew over Canary. This, of course, is attributable 
to the fact that the crew is most involved with their EVA prep- 
arations. We expect no contact with the crew. It's a system 
of negative reporting when all things are going well as they 
apparently are with our lack of contact at this time. This is 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 8:3^ A. M. CST 

Tape 86, Page 3 



to be expected. Gemini Control Houston, 17 hours, 57 minutes 
and standing by. 



CYI Gemini 12, Canary. About a minute to LOS. 

S/C Roger, Canary. We're in EVA prep. 

CYI Roger. 

CYI Houston Flight, Canary Cap Com. We've had 

LOS both vehicles. Both were go. 
HOU Roger. 



Gemini Control Houston. We've just had Loss of Signal with 
Canary. We're on a brief pass over Kano. This is in the outer 
ring of acquisition with Kano, and we'll be standing by for any 
conversation. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 8:^9 a.m. CST Tape 87 

Page 1 



HOT 



Gemini 12, one minute Kano LOS. 



s/c 



12, roger. 



KNO 



Kano has LOS. 



Gemini Control Houston, 18 hours, k minutes into the flight 
of Gemini 12 now. We just had loss of signal with Kano. And as 
we expected, we had no conversation with the crew. Cap Com, Bill 
Anders, only stood by for any conversation that might transpire; 
however, to reiterate again, the crew has heen most involved with 
their EVA preparations and we expected no conversation during this 
pass. At 18 hours, 5 minutes, now into the mission of Gemini 12, 
our next station to contact will be Carnarvon. This is at 18 hours, 
27 minutes, kk seconds GET. So this is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 9:10 a.m. CST Tape 88 

Page 1 



Gemini Control Houston, 18 hours 23 minutes into the flight 
of Gemini 12 now. Jim Lovell and Buzz Aldrin are on their 12th 
revolution. The spacecraft Gemini 12 is presently approaching 
Carnarvon tracking. With regard to today's EVA, we are following 
the same EVA sequence in Gemini 12 as was practiced in Gemini 10 
by Mike Collins. Today we have the standup EVA and tomorrow the 
umbilical EVA. Although Collins' standup EVA was shortened by an 
eye-watering problem, he fared well during the umbilical EVA. 
Only a spacecraft fuel shortage closed the activity early. And 
there is a school of thought that an initial exposure to the 
vacuum of space in a standup environment might aid for the purposes 
of orientation in EVA. So this morning, we have the standup EVA 
built around the S-13 UV photography covering two night passes, 
then a day pass, then another night. We expect hatch opening 
shortly before sunset for this first night. Our dayside pass 
should be a busy one differentiating somewhat from earlier standup 
EVA's. The — at this time, Lovell will, during the dayside pass, 
or before the dayside pass, Lovell will maneuver the Gemini 12 
spacecraft to heads down position. Aldrin will install the 
16 mm EVA camera which will be used tomorrow for evaluation 
today. He'll install the- hand rail which will be left intact 
for tomorrow's umbilical EVA. He will retrieve and replace 
some GLV strips, these are glass-type strips to measure contami- 
nation. He exercises, he'll retrieve the S-12 micrometeorite 
collection package, and try for some S-5 and S-6 photography 
with his camera. During this time, Lovell will reconfigure the 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 9:10 a.m.CST Tape 88 

Page 2 



S-13 for further S-13 — S-13 camera for further photography 

during the second night pass. One item that is rather unique. 

During today's standup EVA will be two sets of exercises. Both 

of these will be performed for thirty seconds or so. One will 

be done before Aldrin stand ups, but after the cabin is depressurized. 

The second will be done during the dayside pass. We expect that 

he will move his hands to his helmet and back at the rate of 

about once per second. And this activity will be measured or 

calibrated with a metabolic cost of this activity predetermined 

in the case of Aldrin on the ground. And we'll note the differences 

between the two environments. We continue to stand by. We are 

some one minute now away from acquisition with Carnarvon tracking. 

However, we expect little or no conversation during this pass as 

the crew is still involved in preparations for their standup EVA. 

At 18 hours, 27 minutes, l6 seconds, this is Gemini Control Houston. 



CRO I have TM-1 solid, Gemini. 

HOU Roger . 

CRO Gemini 12, Carnarvon. Standing by. 

S/C Gemini 12, roger. 

CRO All systems are go Gemini, all systems are go Agena. 

HOU Roger , Carnarvon . 



(dead air) 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, I966, 9:20 a.m. CST 

TAPE 89, 
PAGE 1 

Gemini Control Houston, 18 hours 35 minutes - no conversation 
■whatsoever over Carnarvon. Gemini 12 crew is obtiously 
still involved in their EVA preparations and we have one 
minute until LOS. 
SC Gemini 12 Roger. 

CRO Carnarvon has LOB Gemini and Agena. All 

systems GO at LOS. 
HOU Roger Carnarvon. 

Gemini Control Houston, 18 hours 36 minutes now into the 
flight of Gemini 12. We've had loss of signal at Carnarvon. 
The next station to acquire Gemini 12 will be Texas at 
19 hours 10 minutes 28 seconds into the flight of Gemini 12. 
Over Texas we expect Bill Anders, Cap Com Bill Anders, here 
in Mission Control to be in contact with the crew and thiB 
woul^ be a milestone contact because at this time if the 
situation is suitable he will give a GO for depressurization. 
So at 18 hours 37 minutes 25 seconds this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 9:57 A. M. CST 

Tape 90, Page 1 



Gemini Control Houston at 19 hours, 10 minutes into the 
flight of Gemini 12 at this time. We're standing by for con- 
tact over Texas and at this time we expect Bill Anders to talk 
to the crew with regard to their depressurization. If we 
receive a go over Texas they will start depressurizing the 
spacecraft over Canary. Standing by at 19 hours, 10 minutes. 
This is Gemini Control. 

HOU Gemini 12, Houston Cap Com, through Texas 

and standing by. 
S/C Roger, Houston. We're going through our 

suit integrity check now. 
HOU Roger . 

Gemini Control Houston. Still standing by during this 
pass over Texas. 
(PAUSE) 

HOU Gemini 12, Houston Cap Com. Over. 

S/C Houston, this is 12. 

HOU Roger. We'd like you to pump up your 0 2 

pressure when you go to manual 0^ heater 
until you get 850 psi. 

S/c Understand pumping up the 0^ till 850. 

HOU Correction, that's 700. 

S/c My .... was up to about .3 to .k and my 

command pilot's was .k. 

HOU Understand. Make that 0 g pressure 700. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 9:57 A. M. CST 

Tape 90, Page 2 



S/C Understand 700. It's 650 now. 

HOU Right. 

HOU Gemini 12, Houston. Over. 

S/C This is 12, go ahead. 

HOU Roger, 12. You're go for depress on your 

schedule. 

S/C This is 12. Roger. We'll be depressing 

about 19:23. 
HOU Roger. 



This is Gemini Control Houston at 19 hours, 18 minutes 
into the flight of Gemini 12 now. You just heard Cap Com 
Bill Anders give a go for depressurization. The crew was 
advised to pump the pressure up slightly or move the pressure 
up slightly and this was done with the manual 0 2 heater aboard 
the spacecraft. It was reading 650 psi. They've moved it, 
during the process of moving it, to 700 psi. 
S/C Houston, you have anything you want to add 

to our jettison bag? 
HOU Stand by. 

HOU Bermuda go remote. 

BDA Bermuda remote. 

HOU Gemini 12, Houston. That's negative, over. 

S/C Okee doke. Be advised that the right mike 

in the pilot's helmet appears to be inopera- 
tive. I'm using just the left. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 9:57 A. M. CST 

Tape 90, Page 3 

HOU Understand. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 10:07 a.m. CST Tape 91 

Page 1 



HOU Gemini 12, Houston, over. 

S/C Go ahead Houston. 

HOU Roger. Would you check your audio UHF TR number 

2 circuit breaker? 
S/c Roger. Number 2 audio is up and on. 

HOU Roger . 

HOU Gemini 12, Houston. One minute to LOS. See you 

at Canarys in about three minutes. 
S/C Roger. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Canary Cap Com. 

HOU Okay. Everything looked good going over the hill here. 

Standing by for you. 
CYI Roger . 



This is Gemini Control Houston. We are standing by now for 
As 

our pass over Canary./ soon as we have an indication as to the 
status of hatch opening, we'll pass this along to you. Nineteen 
hours, 26 minutes, 5U seconds, this is Gemini Control. 

This is Gemini Control Houston. Nineteen hours, 27 minutes. 
Canary has acquisition. The spacecraft has indicated depressurized 
and go. We are standing by. Cabin depressed and exercise. Thfs 
is the arm raising exercise has been completed. The first of these 
exercises . 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 10:07 a.m. CST Tape 91 

Page 2 



Canary advises Flight that everything is looking good at this 
time. The cabin is depressurized. (pause) 

Gemini Control Houston. The suit pressures look very good at 
this time. Still standing by during this pass over Canary. 

Gemini 12 advises he's getting set and the lights are checked 
out. (pause) 

Gemini Control Houston. Nineteen hours, 33 minutes. We are 
advised the hatch is open, was opened right on time, (pause) 

Gemini Control Houston. Aldrin advises he has a small 
tendency to float out, but very little. This is, no doubt, an 
outgassing effect that occurs when the hatch is open. He's 
restrained by his oxygen hoses as well as the fabric tether, 
which Lovell can operate much like a seat belt, (pause) 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 12, 1966, 10:21 am CST 

TAPE 92. 
PAGE 1 

Gemini Control Houston, we are about one minute until LOS 
over Canary and all aspects of the flight look good at this 
time. 

This is Gemini Control Houston, 19 hours and 35 minutes into 
the flight of Gemini 12 at this time. We are - have just 
been acquired or will be acquired - we've just been acquired 
by Kano who has acquisition and we'll pick up the conversa- 
tion at this time, any conversation that might transpire. 



SC Okay I'm in rate command,. or rate test. 

ALDRIN Notice any motions of the spacecraft combination 

when I move around just a little bit? 
EOVELL Yes a little. 

ALDRIN That's how I think we got turned aronnd. 



Okay at 20 minutes - ollfienfi of first star field. 

I got the first star which is Cassiopeia, the 

exposure is of 2/20 seconds - 2 at 56 seconds 

and 2 at 2 minutes 
EOVELL Give me the MARK 

ALDRIN You got a MARK. 

LOVELL Right on time there it looks like. 
ALDRIN Soon as I get there I'm going to have to give you 
the 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 10:21 am CST 

TAPE 92, 
PAGE 2 



ALDRIN That's vehicle pressure 

LOVELL Okay I am just getting into position here 

ALDRIN Did you hear those thrusters fire when you move 

around? 
LOVELL Negative. 

ALDRIN I said did you hear those thrusters fire when 

you move around? 
LOVELL Can't hear you. 

ALDRIN Can you hear those thrusters firing when you 

move aroun ? 
LOVELL Oh, no, I'm not. 

ALDRIN Well I do. 

LOVELL Seems a good amount of garbage area up here. 

Things floating all around us. Look like some 
of the paint has peeled on the Agena. 

ALDRIN Roger in the first stage. 

LOVELL Yes the velco covering on the ....cover is 

melting. 

HOU Gemini 12, Houston Cap Com. We have about one 

minute to Kano LOS. Your VOX is going five by 
and Buzz will you confirm that you can see stars 
in the daylight? Over. 

ALDRIN Negative, I won't really confirm that. It looked 

like there was stars when I first got up but a 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 10:21 am CST 

PAGE 3 
TAPE 92 



closer examination - there is so much moving 
away from both vehicles - hate to say it but 
it appears to be going up. 
HOU Understand, one minute. 

LOVELL It may be going in another direction from you 

however, that would be the way that I am looking 
for it 

HOU Understand. 

LOVELL I think I mistook that for a star. 
HOU Copy. 
LOVELL The 

ALDRIN Okay can you look back and see all of that 

LOVELL Now when you look to the sun we might ff€e" a 

little bit far to thwr-right . 
KNO Kano has LOS 

Gemini Control Houston, we've just had loss of signal over Kano, 
at 19 hours 1+2 minutes . Heartrates at the start of our EVA ran 
like this. For Command Pilot Jim Lovell,85, for Pilot Ed Aldrin 
92, respiration rates for the command pilot was 15 and for the 
pilot 18. Very shortly the crew will be heavily involved in 

their S-13 experiment. We will shoot first at Gamma Cassiopeia 
which is in the northern sky, secondly at Sirius which is the 
brightest star in the sky visually and the third field will be 
Gamma Velorum down in the southern part of the Milky Way. They 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, I966, 10:21 ajn CST 

TAPE 92, 
PAGE k 



will use the grating attachment for this experiment. At 
this time we have a tape ready for our pass over Canary 
and we'll play that tape for you now. 



CYI Gemini 12 Canary Cap Com standing by 

SC Roger. Cabin is depressed, exercise 
is completed. 

CYI Roger, you're looking good down here. 

CYI Flight, Canary 

HOU Say again Canary 

CYI I say everything looks real good, both suit 

pressures are up, 02 pressure is holding good. 

HOU Roger, how about sending some summaries? 

CYI They are on the line. 

HOU Okay, we have them. 

HOU Canary from Flight. 

CYI Go ahead Flight. 

HOU Send us a bravo Gemini. 

CYI Bravo, Gemini. 

SC We're in VOX now. 

LOVELL Jettison just missed the dipole. 

ALDRIN Okay, for S-13. 

LOVELL lights already checked 01; t. 

ALDRIN Okay 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 10:21 am CST 

TAPE 92, 
PAGE 5 



IMjERIN . . . .watching your attitude thruster firing, 

it is really something. 

LTJVEEL We'll go at about aren't we. 

MiREm The star is right behind us . 

I believe I see stars all around us. 
LDVELL Are you sure that is not the repress . 

MURTN Stars in the daylight. I don't think so. 

Wait a minute that one star was that waste 

poucher . 

HOU Canary from Flight, send us another main, Gemini. 

CYI Roger. 

SC We've got some of the timer cord hanging around 

me here. 

jDGJVEIIL What's the air dump? 

ALDKHJ . Can't say. 

HOU Flight, Agena Charlie. 

lAHJKIN It looks like I might have to pull some of that 

stuff away when I get back to the adapter. 

I ;Mv»:i>l r Why await standard dynamics. 

TAEDRTN Okay, I'm just drifting here it looks like I 

have a small tendency to float up but very little, 
I'm completely free to push myself away and it 

away from the hatch. There doesn't seem to 

be any tendency at all to w*,nt to leave the hatch. 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 12, 1966, 10:21 am CST 

TAPE 92, 
PAGE 6 

out of the way of those washers. I 

presume particles coming out of the cockpit, 
but they don't seem to be pushing me out. 
I imagine there is a little bit of tension on 
my hoses now but otherwise I'm moving out 
completely free . I see . . . 



LOVELL Okay. 

ALDRIB A beautiful view. 

Now one of the mountains over there. 
LOVELL I'm going to rate command Buzz. 

CYI Canary is about one minute to LOS . 

SC Roger, can you hear us in VOX. 

Canary this is 12, can you hear us in VOX. 
CYI Roger, we are reading you loud and clear. 

SC Roger. 
ALDRIN ' A thrill. 

LOVELL Are yon in a good position Buzz? 

ALDRIN For what the picture? 

LOVELL Yes. 

ALDRIN Okay, can you tell me if I'm going SEF I can see 

I'm slipping, can you tell me? 
LOVELL Yes your going SEF. 

ALDRIN Okay, /.. .cloud patterns 

LOVELL I'm going to rate command Buzz. 



GEMINI 12 MISSI ON COMMENTARY, NOVEMBER 12, 1966, 10:21am CST 

TAPE 92, 
PAGE 7 



ALDRIN 


Let me back down in the hatch a little bit. 


HOU 


Canary Cap Com, Houston Flight. 


CYI 


Go ahead Flight. 


HOU 


Send us an Agena Charlie. 


CYI 


Say again 


HOU 


Agena Charlie 


CYI 


Roger 


FD 


Kano remote 


FD 


Canary is local 


KNO 


Kano is remote and we have acquisition. 


HOU 


Gemini 12, Houston Cap Com through Kano and 
standing by. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 10:^9 A. M. CST 

Tape 93 » Page 1 



Gemini Control Houston, 20 hours, two minutes into the 
flight of Gemini 12. The Gemini 12 spacecraft has been out 
of range of acquisition for some time now; however, we are 
currently approaching the Carnarvon tracking station. There 
is approximately ten to 15 minutes remaining on our nightside 
pass. The crew is no doubt completing the final phases of 
their first S-13 experiments. We have picked up Carnarvon 
now and we're standing by for any conversation. 



HOU Carnarvon from Flight. What did you say? 

S/C Carnarvon, how about turning off that Delta P 

circuit breaker? 
CRO Stand by. 

HOU Flight, Carnarvon. 

S/C I rather doubt that it would effect pictures 

taken by the grating but it just might interfere 
with 

CRO Okay, stand by and I'll get them in Houston. 

HOU Flight. Go ahead. 

CRO Roger. Go ahead and turn it off. 

S/C Okay. 

ALDRIN Can you turn the cabin light on, Jim? 

LO VELL Yes . You may have to move the . . . Buzz . 

ALDRIN Let me know when you're .... 

LOVELL I've got it. 

ALDRIN Now? 

LOVELL Now. 



GEMINI 12 MISSION COMMENTARY, 11/ 12/66, 10:U9 A. M. CST 

Tape 93, Page 2 



ALDRIN I took them at 8 seconds, okay? Is that 

all right? 
HOU Roger. 

LOVELL You're facing to the left. 

ALDRIN Hey, Jim, move it to the left. 

LOVELL I don't think you're aligned right. 

ALDRIN Well, I guess it's up to the left. 

LOVELL Yeh, it should be going up towards it. 

Okay, you're coming up on Antares. 
S/C Okay, I got it. I got Antares. 

S/C Okay. 

S/C You know we're way behind time. I don't 

know how they expect us to do these things 
and then 

S/C Got it lined up? 

S/C To the right of 

S/C to the left of us 

S/C Yes. 

S/C I got a roll. Watch out for your knee. 

Watch out for your knee. 
S/C Where is it? 

s/c I'll do it. Don't you do any of it. 

HOU Carnarvon from flight. Agena main. 

CRO Roger . 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 10:^9 A. M. CST 

Tape 93 } Page 3 



S/C What' s that forward 

S/c Must be I suppose. 

S/c What's that before us? 

S/C Must be.. Orion. 

S/C garbled 

S/C hard right. 

S/C Stand by a second. 

S/C . . .hOl nominally. 

S/C Good pictures, Buzz. 

S/C What's that? 

S/C No reflections. Okay, stand by 20 seconds. 
All set? 

S/C Okay, go ahead. 

S/C Stand by. Mark. 

S/C 5, 3, 2, 1, Mark. Stand by for next one 

Stand by. Mark. 
S/C garbled 
S/C okay. Stand by. .huh? 

S/C Get your foot down. 

S/C How's that? 

S/C Okay. Stand by. Mark, k, 3, 2, 1 Mark. 

Stand by for .... Stand by. Mark. 
S/C Nothing on it. 

S/C Yes. 

CRO One minute to LOS. Standing by. 

S/C Stand by. 

i. i 1. ^ * £ k J* * i: ~ 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 10:U9 A. M. CST 

Tape 93 » Page 



S/C We got a blur in this thing, have we got - 

okay, stand by now. 5, 3, 2, 1, Mark 
it. Okay, stand by for one in one minute. 
Tell me when you're ready. 

S/C Right. 

S/C Stand by. Mark. 

CRO Carnarvon has telemetry LOS, Agena and 

Gemini. 
HOU Roger. 

Gemini Control Houston at 20 hours, U minutes into the 
flight of Gemini 12. We've just had Loss of Signal over Car- 
narvon and an amazingly calm pilot, Buzz Aldrin, as you heard. 
He was performing his S-13 Star Photography. Current heart 
rates on Command Pilot Aldrin read 75 - or on pilot Aldrin I 
should say, read 75. On Command Pilot Jim Lovell, 76. Respi- 
ration rates for Jim Lovell, 12. For Buzz Aldrin, 18. Twenty 
hours, 12 minutes, 3k seconds, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 11:10 a.m. CST Tape yk 

Page 1 



Gemini Control Houston, 20 hours, 23 minutes into the flight 
of Gemini 12. The Gemini 12 spacecraft is now in daylight. We 
are approaching acquisition with Canton tracking station and should 
acquire Canton momentarily. We are advised that the official hatch 
opening time, GET, was 19:29:01. Standing by for acquisition at 
Canton. This is Gemini Control. 



HOU Gemini 12, Houston Cap Com through Canton and 

standing by. 

S/C Okay, stand by. I can't do anything now. 

HOU Gemini 12, Houston. 

S/C We're on a tight schedule right now. 

HOU Gemini 12, Houston Cap Com through Canton and 

standing by. 

lidVELL Buzz, watch your White GLV strip. 

AliURIN Okay. I'm doing it right now. 

LOVELL Take pictures. 

HOU Gemini 12, Houston Cap Com, through Canton and 

standing by, 

S/C Roger, we're in daylight again. Tell ... 

we could not catch Gamma Velorum because we 
didn't have time by the time we got oriented 
out on the platform. 

HOU Roger, copy. 

AIURTGL All right, we'll tape them in. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:10 a.m. CST Tape 9k 

Page 2 



LOVELL All right. You turn the camera on. I've got 

the radiator on , I'm going to . . . I believe 
you're on the S-12 now. 

ALDRIN Okay . ... pouch . 

LOVELL It was in a pouch. 

Speak up. 

ALDRIN Okay. I'm off a little bit on the ... 

LOVELL is getting against my back now. 

and wait for a command. ...(garbled) 

ALDRIN Did they come up with anything from the ground yet? 

LOVELL Its still blowing. 

ALDRIN Oh. 

LOVELL Stand by one and let me go ahead with the air- 

to-ground. 
ALDRIN Stand, by one . 

LOVELL Let me go ahead with the air-to-ground. 

I've got to give water and hand rate gyro. 
ALDRIN Let me get started and I ' 11 . . 

LOVELL Start your Maurer and . . . okay the lanyard, 

and essentially that'll be all but depress. 

ALDRIN Okay, I'll help with the K-pumps . 

LOVELL (garbled) 

We'll change at the first ... The circuit 
breaker is on.' (garbled.) Make the third ... 

ALDRIN Do you want to give me a code? 

LOVELL Well, let's see. Hold it. 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 11:10 a.m. Tape 3k 

Page 3 



ALDRIN (garbled) DF? 

is it 

LOVELL No". I say how/looking? 

ALDRIN Its just fine. 

HOU Gemini 12, Houston. One minute to LOS. 

S/C Roger, Houston, can you hear us? 

HOU Roger, reading you five by. 

S/C Roger, the nose handrail is in. Tapes have been 

changed. Buzz was on the prism '■■ Otfw of the 
S-13. 

HOU Roger. We've been copying. 

S/C We'll have to pump up the oxygen here pretty soon. 

HOU Okay. 

S/C . . . out . 

CTN Canton has LOS. 



Gemini Control Houston. Twenty hours, 31 minutes into the 
flight of Gemini 12 at this time. Our communications over Canton 
were extremely rugged and hard to follow. However, we did receive 
an indication that the prism attachment has been placed on the 
S-13 camera by Command Pilot Lovell in preparation for the second 
set of S-13 UV star photography. We also understand that Aldrin 
did acquire the GLV strips. He's moving right down the time lines 
that we anticipated. We also read that he did not acquire or did 
not have time to acquire Gamma Velorum at the end of his first night 
pass. We do expect to reacquire the spacecraft over Guaymas at 



GEMINI 12 MISSION COMMENTARY, 11/12/66 11; 10 a.m. CST Tape 9*+ 

Page k 



20 hours, hi minutes, 20 seconds. In the meantime, we have a 

weather advisory regarding the weather on the stateside pass. 

The near stationary frontal system throughout the southeastern 

U.S. is associated with extensive cloudiness and scattered shower 

activity and this is as shown in the scalloped area on the 

weather map. Only a few scattered clouds prevail over the 

southwestern U.S. from Texas to southern California, so viewing 

conditions should be reasonable along that portion of the 

and 

ground track. Another frontal system/associated cloudiness is 
moving into the northwestern part of the U.S. At 20 hours, 
33 minutes, this is Gemini Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/12/66, 11:28 a.m. CST 

Tape 95, Page 1 

This is Gemini Control Houston, 20 hours, kl minutes into the 
mission of Gemini 12 now. We are coming up on the final phases of 
our 13th revolution during acquisition with Guaymas and we will have 
a continuous run over the States following Guaymas and we'll stand by 
now for our pass over Guaymas. 
S/C ...over here by your window? 

S/C Yeah. 

S/C Unfortunately, I can't read your trigger. 

HOU Gemini 12, Houston Capi Com thru Guaymas, standing by. 

Lovell Roger, Houston, this is 12. We are standing by too. 

Aldrin Ah, there we are. 

Lovell Everything has been completed, except retrieving the 

EV camera, Buzz is out there taking all kinds of pictures 
of water. 

HOU Roger 

Aldrin It looks like a good heading here, Jim. There's Baia, 

California, Southern California coast out there. 

Lovell Houston, without a platform it might be a little diffi- 

cult to get all three star fields , it takes a little 
while to get from one to the other. Does the experimenter 
have any choice of which of these three star fields on 
the second night pass he doesn't want to have?? 

CAP COM That's affirmative. If you want to drop one, drop 

the second one, Algo. 

Lovell Roger, we'll drop Algo if we don't have time. 

CAP COM That's affirmative. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:28 a.m. CST 

Tape 95, Page 2 

Aldrin It looks great ... down there... a little .... can you 

move it just a tad? 
Lovell Just a few feet. No, its way up there Buzz, its already 

loose and I think all the way. 
Aldrin Its all the way? 

Lovell If you're ready to come on down, I can't even see 

the other end of it. 
Aldrin Ok. 
Lovell I've got the blue. 

Aldrin Ok, that's it. 

Lovell ....I don't know.... too loose into everything. 

Aldrin Roger (garbled) 

Lovell Look at that, there's California wanting to get some 

shots of NewrMexico, 102. 
Aldrin Roger. Can't see (garbled) ...pretty clouds down 

there . 

HOU Texas Remote, Guaymas local. 

TEX Texas Remote 

GYM Guaymas local. 

S/C How is the weather in Houston? 

Its cloudy. 

CAP COM Ah, roger. /We have a front laying just off the 

Coast. 

Aldrin Yes, I think I can see it. 

Lovell What did I tell you, Buzz? Four days vacation with pay! ! 

To see the world 1 1 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:28 a.m. CST 



Tape 95, Page 3 

Aldrin Yeah!! Hey, don't everybody smile down there. 

CAP COM We are smiling. 

Aldrin . . .pitch down a little more Jim? 

Lovell Pitch down? 

Aldrin Yeah. 

Lovell (garbled) Ok. 

Aldrin ...now over here to the South. 

Lovell ...coastline there to the left. 

Aldrin Ok. ...me how much is left in the... 

Lovell ...know, but let's take some pictures of it. We are 

going to retrieve it pretty soon. 
Aldrin We ought to come over Florida at this pass. 

Lovell Heading over the Gulf now? 

Aldrin Yeah. 

CAP COM You'll be passing over the southern tip of Florida, 

Gemini 12. 

Lovell Roger can't be a little higher. 

CAP COM Roger. 

Aldrin Was there a definite turbine problem or was it your 

concern over the attitude control that scrubbed the 
burn? 

CAP COM Stand by. 

Lovell Hey Buzz, did you shoot the contrail down there? 

Aldrin Where abouts? 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:28 a.m. CST 

Tape 95, Page k 



Lovell Right over the hull, right on the nose. See it? 

Aldrin Yeah, picked up the contrail. 
Lovell Good. 

Aldrin OK, looks like Florida is coming up. How about 

pitching down just a little bit more? There are 
the Keys. 

Lovell ....that National flight to Houston. 

Aldrin Yaw right a little, if you can. 
CAP COM That's the backup crew. 
Lovell Right. 

Aldrin . . . .going the wrong way. 

CAP COM No, that's the backup crew. 

Gemini 12, Houston. There was nothing wrong with the 
Agena attitude control, we are just not going to make 
any PPS burns. 

Lovell Roger, understand. 

Aldrin Want to pitch down a little more Jim, roll right. 

Lovell Roll right? 

Aldrin Yeah. 

Lovell Hey, look at that. 

Aldrin Recognize that? 

Lovell Looks like, uh, let's see, Mobile?? 

Aldrin Would you believe Tampa? 

Lovell OK, I'll believe Tampa. 



GEMINI 12 MISSION COMMENTARY, 11/12/66,11:28 a.m. CST. 

Tape 95 > Page 5 



Lovell 

Aldrin 

CAP COM 

Aldrin 

Lovell 

Aldrin 



Lovell 
CAP COM 

Lovell 
Aldrin 
CAP COM 



I can't see a thing. 

Alright, pitch down a little more. 

That sounds like a typical Navy navigator. 

Boy, look at that beautiful water. 

Well, that's the Cape, I can see that. 

Sure would like to do a little skin-diving there. 

Looks like there are a few clouds over the Cape 

too. 

Looks like we launched on the right day. 

Gemini 12, Houston. You ought to have some pretty 

good cloud cover in the 16-1 area. 

Roger . 

Yaw right a little. 

You might try to get a picture of that if you can. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, I966, 11:39 am CST 

TAPE 96, 
PAGE 1 



....try to get a picture of that if you can. 
ALDRIN Are you logging all of these in? 

LOVELL Yes I am writing them all down. 

ALDRIN That one must be U5. 

LOVELL That is why we're staying under it. 

There is a shot to:the rights there of the sun. 

ALDRIN , I know it b"t these clouds are 

FD Bermuda remote. 

ALDRINl I don't think that's much. 

BDA mainland 

SC Repress 

BDA See you next pass. 

ALDRIN Do you suppose these are the clouds he is talking 

about? 

LOVELL I don't know, look down there there is a big 16-1 

visible 

ALDRIN Yes, I can 

LOVELL Yes, this must be it right here. 



ALDRIN Move forward I am taking your picture. 

HOU You're i about over 16-1 Gemini 12. 

SC Okay there is a lot of clouds out here. 

Roger we can see a lot of clouds. 



GEMINI 12 MISS IONC CMMENTAR Y , NOVEMBER 12, 1966, 11:39 am CST 

TAPE 96, 
PAGEE 2 



ALDRIN Ready to smile. 

LOVELL Yes. 
ALDRIN Affirm. 

LOVELL Did you get the right setting. 

ALDRIN What are you guessing? 

LOVELL 5/6 maybe. 

ALDRIN (garble) 

fiLDRIN Okay, smile. 

LOVELL Okay. 

You're really going to have to fix me this time 
because I can't see a thing Buzz. It's very 
hard for me to align because - my tie-down 
slipped up 

ALDRIN Yes 

LOVELL I'm having a hard time seeing out of the .... 

ALDRIN Maybe we ought to make one more trip beforehand. 

HOU Gemini 12, Houston. One minute to LOS . We'd 

like to have you do the next exercise period 

over Carnarvon if possible. 
SC Roger, can you give us a GET? 

HOU Standby. We'll give it to you over Canary. 

SC I got 50 showing on here, I might as well (garble) 

until it's all over. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966 11:39 am CST 

PAGE 3, 
TAPE 96 



LL Yes. 

ALDRIN I don't know whether we got any pictures with 

this stuff on the back of us. 

You used up what's in the camera. 
LOVELX Yea it's off. 

ALDRIN Well, let's take a picture of each other then. 

LOVEEL I don't know if it's all gone or not but let it 

run out Buzz. 
ALDRIN It is still running, (garble) 

LOVELL Okay, it's 35 minutes do you want to start bring- 

ing that camera in and get it all squared 

away. Cut the (garble) off. 
ALDRIN I can hear it still running. 

LOVELL Yea, I know, but it will run forever. 

I just turned it off. 
Gemini Control Houston, 21 hours now into the flight of Gemini 12. 
We are out of range with Bermuda. You were just tuned into a 
lengthy conversation between Jim Lovell aboard Gemini 12 and 
Cap Com Bill Anders here in Mission Control. Anders did advise 
Gemini 12 that if they had a time problem during their second 
night pass with regard to the S-13, that if they choose to drop 
any star or star field Algol would be the likely choice. Dur- 
ing this pass, they will be shooting with the prism, instead 
of the grating. The grating gives us the heighth dispersion 
spectra which - where we might hope to see some details in the 



GEMINI 12 MISSION CCMMENTRRY, NOVEMBER 12, 1966 11:39 am CST 

TAPE 96, 
PAGE k 

spectra the prism gives a shorter spectra but it also allows 
us to see the much fainter stars than can be seen otherwise. 
Surgeon advises us that heart rates are remaining very steady- 
in the high 70 range. Standing by for acquisition with 
Canary. This is Gemini Control He ston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:^9 a.m. CST Tape 97 

Page 1 



S/c ... I flipped your circuit breaker. 

LOVELL What's your; suit pressure? 

ALDRIN Pressure's good. 

CYI Okay, we have both vehicles. TM solid. Both are 

go. 

HOU Roger. 

CYI Gemini 12, Canary Cap Com. 

S/c Roger, Canarys. How do you read us? 

CYI Read you loud and clear. 

Okay. Your Carnarvon acquisition will be 21 +38. 
S/C Roger. 21+38. 

CYI That's affirmative. We are standing by. 

S/C Roger. 

LOVELL Look at that old . . . (garbled) at the workstation 

there . 

ALDRIN Yeah. It looks just like the one that was there 

before . 

LOVELL Okay, let's leave here, give up on SGFW. 

ALDRIN Okay. 

LOVELL Give up on SGF? 

ALDRIN Yes, believe you J re right. 

LOVELL You're out of film now. 

ALDRIN Yep. Here's Africa coming up. 

LOVELL It come? 

ALDRIN Yeah. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:^9 a.m. CST Tape 97 

Page 2 



ALDRIN The . . . out . 

HOU Canary, Houston Flight. 

CYI Go ahead, Flight. 

HOU Send us a Gemini main. 

ALDRIN There's no sign that it would effect ... 

LOVELL Roger . 

ALDRIN Wonder why the pressure is dropping off. 

Yeah, pressure gauge is ... 
LOVELL What pressure is that? 

ALDRIN 0 2 . 

LOVELL Okay on seven. Have you got the heater on? 

ALDRIN No. 

S/C Canary, this is 12. 

CYI Go ahead, 12. 

S/C Roger. We just saw a drop in 0 g psia slightly. 

Did you get that on the ground? 
CYI Okay. Its bouncing a little bit, but it is holding 

pretty steady down here . 
S/C Okay. It's over that 700 now, but it bottomed 

down to about 1+00 telemetry and then 600 for 

a while. 

CYI Okay. We haven't noticed any big fluctuations 

in it. We'll keep an eye on it for you. 
S/C Okay. It might just be a gauge problem. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:^9 a.m. CST Tape 97 

Page 3 



ALDRIN Okay, let me get the camera in. 

HOU Canary, send us a Gemini A, please. 

ALDRIN Camera is off. 

LOVELL Roger. I'll direct the command to stop these 

rates . 

ALDRIN . . . both on the seat . 

LOVELL Watch it. Watch it. 

ALDRIN Okay. 

LOVELL Get your foot out of the way. 

Get your foot out of the way. 
ALDRIN Okay. 

LOVELL You're on the switches to the fuel cells. 

ALDRIN I don't want to hit those. 

LOVELL I can see three of them. Can you look down 

and see the other three of them on? 
ALDRIN The back switches? 

LOVELL Yes . 

ALDRIN They're on. 

CYI Houston Flight, Canary Cap Com. 

HOU Go ahead. 

CYI Okay, that Q> 2 is holding real steady at 836. 

HOU 836? 
CYI Right. 

LOVELL Now why don't you check that Delta P gauge? Can 

you reach around there and do that? 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:^9 a.m. CST Tape 97 

Page % 



ALDRIN Check it for what? 

LOVELL The Delta P gauge. 

ALDRIN I can't reach around there now. 

LOVELL You've got a problem. 

ALDRIN No I can't. 

', In the first place, you let it slip. 

LOVELL Stand there and tighten up on ..now wait. 

ALDRIN Boy, I don't know if I'll be able to get these 

straps on 

/.. the way this suit is. 
LOVELL (Garbled) 

If you can, get in the sane position you were in 

before. And I'll put the strap in the spot the 

same spot it was before. 
CYI Gemini 12, Canary Cap Com. About a minute to LOS. 

That 0 2 pressure is holding real steady now down 

here. 

S/C Okay, Canary, thank you. 

CYI Houston Flight, Canary Cap Com. I've had LOS 

both vehicles and both were go. 
HOU Roger . 



This is Gemini Control. We've just had LOS with Canary and 
we're picking up now at Kano. We should start our second night 
pass after acquisition at Kano and before Tananarive. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11: 1*9 a.m. CST Tape 97 

Page 5 



S/C (garbled) 

KNE Kano is remote and we have acquisition. 

HOU Gemini 12, Houston Cap Com, through Kano and 

standing by. 
S/C Roger. 

HOU With reference to your exercises over Carnarvon, 

it'll conflict with S-13, so do you* exercise 
on your schedule. We'll get it off the tape. 

S/C Roger. 

for 

LOVELL Okay, looks like we're set/S-13 through Kano. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:59 a.m. CST 



Tape 98, Page 1 

S/C ...at lunch 1 ! time. 

S/C in the box, does it have a tendency to go 

sideways? 

S/C Let me look and see. 

S/C ...still taking pictures of the sunrise and.. 

HOU Roger. 

S/C ...on our back. 

S/C What? 

S/C I say we are on our back. 

Aldrin Ok. 

Lovell See the horizon? 

Aldrin Looks like the one behind us 

Lovell Maybe . . . 

Aldrin Yeah 

Aldrin You sure it isn't a Lockheed bolt? 

Lovell May be 

Lovell (Garbled) there on our ....right. 

Aldrin Right? 

Lovell Right 

Aldrin Pick up a feeler here. 

Lovell That's beginning to.... right now. 

I hope you.... did you? 
Aldrin Yeah. It takes me a while to. . .adapter. . .out here. 

Lovell Yeah, I've been out of the sun. 

Aldrin Yeah. Its like coming in out of a snowstorm. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 11:59 a.m. CST 

Tape 98, Page 2 

Lovell Hey , there 1 s . . . . 

Aldrin I'm beginning to.... some now. Man, I'll tell you, 

that's hard to see. 
Lovell Ok, you're coming up on... in a few feet 

(Several sentences of garbled VOX transmission) 
Lovell ...I think I am. ...I can barely see out buzz, I 

can barely see down. 
Aldrin (Garbled) 

Aldrin Ok, it should be that star that's coming into view 

now. 

CAP COM 30 seconds to KAno LOS. 

KNO Kano has LOS. 

Gemini (Control Houston 21 hours 18 minutes into the Flight 
of Gemini 12 now. We've just had loss of signal with Kano. The 
next station to acquire will be Tananarive, this will be at 21 
hours, 22 minutes, 37 seconds into the Flight of Gemini 12. The 
Gemini 12 spacecraft is now in its 2nd night pass during this 
standup EVA. At 21 hours, 18 minutes, UO seconds, this is Gemini 
Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:08 P. M. CST 

Tape 99, Page 1 



Gemini Control Houston at 21 hours, 22 minutes now into 
the flight of Gemini 12. The Gemini 12 crew, Jim Lovell and 
Buzz Aldrin, now are involved in their second night pass por- 
tion of the standup EVA. We expect acquisition with Tananarive 
in a matter of a few seconds now and we're standing by for any 
conversation which might transpire during this acquisition or 
during this pass over Tananarive. This is Gemini Control 
standing by. 

HOU Gemini 12, Houston Cap Com through Tananarive 

and standing by. 
S/C Mark. 
S/C garbled 
S/C All right. 

S/C Stand by. Mark it. 

S/C You were right on, Buzz. 

S/c I'm not so sure the camera's on this time. 

I think it could stand a little moving, Buzz. 

... .1 mean. 

S/C Stand by. Mark. Stand by for the next one. 

Tell me when you're ready. 
S/C All right. 

S/C Stand by. Mark. 

S/C Stand by. Mark it. 

S/C All right. 

S/C Stand by. Mark. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:08 P. M. CST 

Tape 99 > Page 2 



S/C It's going pretty well. 

S/c Let me know when you're ready. 

S/C All right. 

S/C Stand by, Mark. 

Got it? 
S/C Okay. 

S/C Okay, we'll be in a second. 

S/C Okay, we're going over to Canopus. 

S/C On my mark. 

S/C Okay. 

S/c It's not very far from looking at them. 

which way you go. 

S/C What's that to the right? The bird, huh? 

S/C Yeh, the bird wings of Velorum. 

S/C garbled. 

S/C ....approximately appears to be 29 degrees. 

S/C read off the .... wing. 

HOU Gemini 12, Houston Cap com. One minute to 

Tananarive LOS. 

S/C Roger, Houston. I have the voice transcript 

two hours now, going remote. 
HOU Roger, understand. 

TAN Tananarive LOS. 



Gemini Control Houston, 21 hours, 30 minutes into the 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:08 P. M. CST 

Tape 99 > Page 3 



flight now. We've just had our LOS or Loss of Signal with 
Tananarive. Most of the conversation you've heard during 
this pass was concerned with the S-13, the UV Star Photography 
experiment. Our next acquisition will be at Carnarvon and that 
will be at 21 hours, 38 minutes, one second into the mission. 
This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:25 PM CST, TAPE 100 

PAGE 1 

This is Gemini Control Houston 21 hours 38 minutes into the 
mission now. Just coming up on acquisition with Gemini 12 
over Carnarvon. Standing by for it. 



ALDRIN When I rub my gloves together there is static 

electricity between them. 

LOVELL Stand by. Do you read? 

ALDRIN ...phenomenon. 

LOVELL Stand by. Mark. Stand by. Mark. 

S/C . .load. . .pictures. 

CRO 12, Carnarvon standing by. 

S/C Roger . 

S/C All set? Stand by -Mark. 

S/C Stand by. Mark. 

S/C Next one. 

S/C Low as I can get it. Hold this under now. 

S/C All right. 

S/C Stand by. Mark. 

S/C How is it going? Pretty well? 

S/C Well, I ... a little bit left, but it . . . 

S/C That is okay. 

S/C Stand by. Mark. 

S/C ...give me another one. When you are ready. 

HOU Carnarvon Com, Flight. Gemini main. 

CRO Roger . 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 12:25 PM CST, TAPE 100 



PAGE 2 

S/C Stand by. Mark. 

CRO 12, Carnarvon. 

S/C Go ahead. 

CRO Roger, we have requested that you record a 

GET at start of . . . exercise. 
S/C Roger, will do. 

S/C How about the exercise . . . holding this cable 

and . . . down for 2 minutes? 
CRO That doesn't count. 

S/C Doesn't count, huh? 

S/C No useful work is being done. 

LOWELL Just keep your feet out of the fuel cell 

switches. 

ALDRIN ... I do believe the sun is coming up. 

LOVELL Is it? 

ALDRIN Well, we will get one more... be there in 

a couple of minutes. How are you doing 
on that one? 

LOVELL 5 seconds to go. Stand by. Mark. 

Go when you are ready. 
ALDRIN Okay. 
LOVELL Stand by. Mark. 

ALDRIN Sun coming up ... . 

LOVELL We will make an 11 inning version.. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:25 PM CST, TAPE 100 



PAGE 3 

CRO One minute until LOS. Standing by. 

S/C Roger. Standing by. Mark. . . .S-13 exposure 

Carnarvon. . .1 minute ... due to the sunrise. 
CRO Okay. 

S/C You want to record that one. 

S/C Okay. 

S/C Okay, let me know when you are ready with the 

camera. 

LOVELL Okay, stand by a second. Just let her hold there 

Buzz. We will Just keep it. 
S/C Did. . . 

ALDRIN 

LOVELL Okay. 

ALDRIN Taking a few pictures here, just about dawn. 

LOVELL Do you feel that you rested for 2 minutes? 

ALDRIN What? 

LOVELL Do you feel that you rested for 2 minutes? 

ALDRIN No, man. 

LOVELL 

CRO We have LOS of both vehicles. 

HOU Roger. 

CRO All systems go at LOS. 



Gemini Control Houston 21 hours kj minutes. We have just had 
LOS over Carnarvon. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:36 p.m. CST 

Tape 101, Page 1 

This is Gemini Control Houston at 21 hours, 50 minutes into 
the mission of Gemini 12 at the present time. Our next station 
to acquire will be Canton and this will be 57 minutes after the hour. 
Fifty-seven, 1*3 seconds after the hour. By the time we are acquired 
by Canton we expect the hatch to be closed and repressurization of 
the spacecraft being taken place. So at 21 hours, 50 minutes, this 
is Gemini Control Houston. 

END OF TAPE. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12: U5 p.m. CST Tape 102 

Page 1 

Gemini Control, Houston, 21 hours, 58 minutes into the mission 
now. We have acquired Gemini 12 over Canton and conversation is 
taking place now with, remoted through Canton with Pete Conrad and 
the crew. 



Lovell That was a pretty good exercise, wasn't it? 

Aldrin Yeah. That was a lot of fun. 

CAP COM 12, Houston. How did the hatch closing go? 

Lovell ...slipped on me there,... one star to the other. 

Aldrin ...pick up stars. Take too long for me to get 

Lovell Yeah, I am starving to death already. 

Aldrin If we can. . . 

HOU 12, Houston. 

S/C Go ahead. This is 12. 

HOU Roger, how did the hatch closing go? 

S/C Roger, we are two feet above right now. We 

want to pull off until we pull up some pressure. 

HOU I didn't quite copy. Would you say again? 

S/C We are 2 feet above and the cabin, trying to 

build up some pressure. Let me know when we are 
going to start. . .pressurizing cockpit. 

HOU Houston copy. 

S/C Houston, 12 here. I am sure .. easily. 

HOU Houston copy. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 12:^5 PM CST TAPE 102 

PAGE 2 

S/C ... going by me now . 

S/C Maybe a little of this. 

S/C 

S/C ..going up again. 

S/C I have a status for you Flight. 

S/C Oh, I see what is broken 

S/C What is it. 

S/C My lap belt is broken. It apparently came 

apart somehow. Well, it wasn't ... anyway. 
S/C No. 
S/C ..appreciate... 

HOU 12, Houston, 1 minutes until LOS. Standing 

by. 

S/C Roger. We are building up pressure in the 0^ 

again. We are about h... now. 
HOU Houston copy. 

S/C . . .another pressure. . . 

S/C Well, do we have everything? 

S/C I don't know. 

CTN Canton has LOS. 

Gemini Control Houston 22 hours 7 minutes into the flight of 
Gemini 12 at this time we have just had loss of signal. Passed 
out of range of Canton tracking station. Our communications over 
Canton was quite difficult to follow. The transmission did come in 
quite garbled. However, we did read that the hatch has been closed. 
It was scheduled to have been closed prior to Canton and the crew 
did indicate that they were building up the pressure in the cabin. 



GEMINI 12 MISSION COMMENTARY » 11/12/66, 12:1+5 PM CST TAPE 102 

PAGE 3 

Also a confirmation was made that they performed their set 
second set of exercises or exercise. Buzz Alrdin performed 
his exercise over Carnarvon. Our next acquisition will be 
California at 22 hours 15 minutes into the flight of Gemini 12 
and we will pick up at that time. This is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966 1:02 pm CST 

TAPE 103, 
PAGE 1 

Gemini Control Houston, 22 hours 15 minutes into the flight 
of Gemini 12 at this time. We're standing by now for our 
stateside pasB and expect an acquisition by California in 
Just a moment. Standing by for California this is Gemini 
Control. 

HOU Gemini 12, Houston. Standing by at California. 

Gemini 12, Houston. 
SC Go ahead Houston 

HOU Roger, wonld you turn your delta P circuit 

breaker on and let me have an idea how you're 
coming there. I've got a rather lengthy 
update. If you don't want it now we will give 
it to you later. 



SC The delta P circuit breaker is coming on. We 

still have the two lights and we're right in 
the middle of unstowing all this stuff so 
how about giving it to us later. 

HOU Okay, we are standing by. 

FD Guaymas remote, California local. 

GYM Guaymas remote 

8al California local. 



This is Gemini Control Houston, 22 hours 18 minutes. We are 
continuing to standby during this stateside pass. However, 
as yor heard Command Pilot Lovell indicate the crew is quite 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 12, I966 1:02 pm CST 

TAPE 103, 
PAGE 2 



involved at the present time of restowing all of their 
gear which was involved during the standup EVA. Continuing 
to standby at 22 hours 18 minutes, this is Gemini Control. 



FD Texas remote, Guaymas local. 

TEX Texas remote. 

GYM Guaymas lopal. 

HOU 12, Houston. Gemini 12 Houston. 

SC Go ahead Houston, Gemini 12. 

HOU Roger would you check your delayed time circuit 

breaker please? 
SC Roger it appears to have been bopped, let 

me put it forward. 
HOU Okay, thank you very much. While you 



are listening we got an eat period for you 
starting at 23:00 to 23:50 and during that 
eat period at 23:17 over Carnarvon we would 
like you to purge the fuel cells, section 2 
and then section 1. We'll update the rest 
of your flight plan at Carnarvon. 
SC Okay, that is purge the fuel cells over Carnarvon, 

we'll be standing by for that call for us to 
do that. 

HOU Okay, that will be 23:17:00. 

SC 23:17, okay. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966 1:02pm CST 

TAPE 103, 
PAGE 3 



SC Okay, is there any S-5,S-6 of interest on 

this pass? 

HOU That is negative. We are going to delete 

it, that is in the flight plan update that we 
will pass you whenever you are ready to copy it. 

SC I mean on this stateside pass right now. 



END OF TAPE 



• \ 

GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:12 P. M. 

Tape 10l+, Page 1 



HOU 12, Houston. 

S/C Go ahead. 

HOU At your convenience, would you go back, to 

FC1 please? 

S/c Roger, will do. What is our orbit now? 

HOU Wait one. 

HOU 12, Houston. You're still in a 139 by 163. 

S/c 139 by 163. Thank you. 

HOU Jim, for your information, as you pass 

Bermuda there, the Blue Angels are putting 

on a little show right now. 
S/C Uh huh. 

HOU Excuse me, over GBI. 

HOU And 12, this is Houston. If you have a chance 

could you give us 15 seconds on what happened 

to your tie down? 
S/c Yeh, Pete. One of the tie downs we found out 

after we repressed part way, well, the lap belt 

let go. 

HOU Roger, did it break or did it just come loose? 

S/c It looks like maybe it wasn't fastened correctly 

or something like that. It just came loose. I 
tried it again after we got down and it was okay. 

HOU Okay, thank you. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:12 P. M. CST 

Tape 10l+, Page 2 



S/C It happened on the day pass that it let go 

up against the top where it made it very- 
difficult to see anything but we may get the 
stars on the second pass. 

HOU Okay, thank you. 

HOU Bermuda remote. 

BDA Bermuda remote. 

S/C Houston, 12. 

HOU Go ahead. 

Go ahead, 12. We're listening. 

HOU Gemini 12, this is Houston. We're listening. 

S/c Roger. A possible problem popped up before 

EVA. We attempted a urine dump and we weren't 
too successful. We'll give it another try here 
as soon as we get squared away. 

HOU Okay. 

HOU 12, Houston. 

S/C Can you guess what the Command Pilot did not 

jettison on the last EVA? 
HOU Yes, we can guess. We want you to check your 

secondary coolant valve circuit breaker, please. 
HOU 12, Houston. Did you copy that? 

S/C 12. Negative. 

HOU Roger. Check your secondary coolant valve 

circuit breaker. The celanoid urine dump 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:12 P. M. CST 

Tape 1C4, Page 3 



is wired to that. 
BDA Houston Cap Com, Bermuda Cap Com. 

HOU Go ahead. 

EDA You're not - ... transfer resumed. 

Hou 12, this is Houston. Check your secondary 

coolant loop circuit breaker. 
g/C Roger, understand you want the secondary - 

wait a minute, we've got that one on. 

Houston, 12. Say again. 
Hou Roger, check that it is on. Is that on? 

HOU 12, Houston. We have one minute to LOS. 

HOU 12, Houston. How do you read me now? 

s/c Much better, Houston. 

HOU Okay, check that secondary coolant loop circuit 

breaker on. 

S/c All coolant loop circuit breakers on. 

HOU Okay, and have you tried the urine dump or 

are you going to? 
S/c We haven't tried it yet but we're going to 

give it another try here. 
HOU Okay, we're coming up on about 30 seconds to 

LOS at Antigua. 

S/c Oh, okay, Pete, it's beginning to fall into 

place now. I remember somebody saying that 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:12 P. M. CST 

Tape 10U, Page h 



when you have that secondary coolant valve 
circuit breaker open that you can't do a 
urine dump. Is that right? 

HOU That's affirmative, that ' s affirmative . 

s/c Just the configuration we're in. 

HOU Okay. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, , 1: 22 p/m. CST Tape 105 

Page 1 



Gemini Control Houston. We're out of range now with Antigua. 
The next station to acquire will be Canary. We expect acquisition 
with Canary at 22 hours, 39 minutes into the mission. At 22 hours, 
36 missions — minutes, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:2$ p.m. CST Tape 106 

Page 1 



Gemini Control Houston. Twenty- two hours, 38 minutes now 
into the flight of Gemini 12. Astronauts Jim Lovell and Buzz 
Aldrin are nearing acquisition with Canary Island tracking, and 
we will stand by — standby for any conversation which might 

transpire during this pass. In the meantime, in Mission Control, 

I 

the backup crew members for Gemini 12 ajfe how present . 



HOU Affirmative. 

CYI Okay, we'll give them a TX then. 

HOU Okay. 

CYI Okay, we've got TM solid. 

HOU Roger . 

CYI Gemini 12, Canary Cap Com. 

S/C Canary, Gemini 12, go ahead. 

CYI Roger. Like to check the status of your RCS 

heaters . 

S/C Roger. RCS heaters have been on since inversion 

checklist . 

CYI Okay. And verify that your TM switch iB in the 

command position. 
S/C TM is command. 

CYI Roger. Sending you a TX. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:25 p.m. CST Tape 106 

Page 2 



CYI Houston Flight, Canary Cap Com. 

HOU Go ahead, Canary. 

CYI Okay. He's got his ACS on, horizon sensors are 

still off and the geo rate's still off. Do you 
want him to turn them on? 

HOU Negative. 

Canary, Houston Flight. 

CYI Go ahead. 

HOU Send us another Agena main, please. 

CYI Roger. Agena main? 

HOU Affirmative. 
CYI Roger. 

12, Canarys. About a minute to LOS. We'll be 

standing by. 

S/C Roger, Canarys. We'll be able to take an update 

here shortly. 

CYI Okay. I' guess we'll give it to you over Carnarvon. 

And we'll see you in the morning. 
S/C Righto. 
CYI Houston, Canarys.. 

HOU Go ahead. 

CYI Okay. We've had LOS on both vehicles and both were go. 

HOU Okay. We'll see you in the morning. 

CYI Aye that's affirmative. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 1:25 p.m. CST Tape 106 

Page 3 

Gemini Control Houston, 22 hours, minutes. We've just had 
LOS with Canary. We expect to pick up Kano momentarily. In the 
meantime, as we started to mention, the backup crew members for 
Gemini 12, that's Gordon Cooper and Gene Cernan, are now in the 
Control Center and its expected they will fill in and assifct in 
Cap Com duties along with Pete Conrad and Bill Anders. Standing 
by for any conversation which might transpire over Kano, this is 
Gemini Control Houston. 



HOU Kano go remote. 

KNO Remote . 

HOU Gemini 12, Gemini 12, Houston through Kano, over. 

S/C Roger, Houston, this is 12 here. 

HOU Roger, did you get the — did Buzz get the 

GLV strips on the EVA? 
S/C Naturally. 

HOU Very good. Very good. 12, Houston. We have 

about a five minute pass here at Kano. We are 
standing by. You'll be updated over Carnarvon. 

S/C Roger. Understand. 



(pause) 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 1:35 pm CST 

TAPE 107, 
PAGE 1 



HOU 



12, Houston. One minute to LOS Kano, standing 



SC 



Roger Houston. We are breaking out some 



lunch now. 



HOU 



Okay. 



KNO 



Kano has LOS. 



Gemini Control Houston, 22 hours 52 minutes into the flight. 
We've just had loss of signal with Kano. The GLV strips 
referenced during the conversation between Pete Conrad and 
the Gemini 12 crew, these are four glass like strips that 
are located behind the hatches on spacecraft 12. During 
the first standup EVA, Aldrin was scheduled to pull two of 
these strips and replace with two others stowed within the 
cabin. Tomorrow he is scheduled to pull all four of these 
strips. These axe aboard* to measure any contamination either 
in powered flight or in orbital flight during the flight of 
-during the mission of Gemini 12. We assume from his answer 
that he was successful in fulfilling the needs of the flight 
plan for today. Twenty- two hours 53 minutes this is Gemini 
Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, 1966, 1:5^ pm CST 

TAPE 108, 
PAGE 1 



This is Mission Control, Houston, 23 hours 7 minutes 38 seconds 
after liftoff. During the just completed pass over the 
Tananarive voice remoting station, spacecraft communicator 
Pete Conrad passed to the crew of Gemini 12 an update of 
their flight plan which included two runs of the Airglow 
Horiaon Photography Experiment, S-ll, the S-29 Moon Librat ion 
Region Photography using the star ^fomalhaut as the target 
star. An eat period was programmed, planned landing area 
update during the pass over thle .Coastal Sentry. Crew status 
report and a purge of fuel cells during the next Hawaii pass, 
and another run of the MU08 Beta Spectrometer Experiment and 
also he spelled out the hours for their sleep period tonight. 
We have a tape of this particular pass and we will play it for 
you now and it includes the ground elapsed times of these 
various experiments and activities. Let's listen to that 
tape now. 

FD Tananarive go remote. 

TAN Tananarive remote. 

HOU Gemini 12, Gemini 12, Houston through Tananarive 

standing by. 

SC Houston, 12 here. We won't be copying but can 

you give us a brief resume of what we have coming 
up? 

HOU Okay, we'll do that. We got you eating as you 

are now. Around 2l+:13 elapsed, we'd like an 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 12, I966, 1:5^ pm CST 

TAPE 108, 
PAGE 2 



S-ll mode A, and then on the next rev at 
25:U3 another mode - S-ll mode B. Along about 
27:05 we'll get the X-ray experiment hack on 
and at 27:13 an/S-29 on fomalhaut. Then we 
got you at another eat period, we'll update 
your PLA update at 28: 12 "Over the CSQ, and 
get a few things at that time over Hawaii, a 
crew status report 28:27, you'll have another 
fuel cell purge and right around 29:00 we'd 
like to catch that HkO& again, which we missed 
yesterday. Then we are going to have you go to 
bed at 29:30. 



SC Thank you. 

HOU Okay, they'll give you the exact details for 

that whenever you are ready to copy. You can 
get it at Carnarvon or we will give it to you 
at the states again. 

SC Okay, was that S-29 on fomalhaut? 

HOU That is affirm. 

SC Houston, 12. 

HOU Go ahead 12. 

SC (garbled) 

HOU Say again 12, I am not reading you. 

Gemini 12, Houston, say again I didn't copy 
that. 

SC I said all the experiment 

HOU Rog er 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, I966, 1:5^ pm CST 

TAPE 108, 
PAGE 3 

HOU 12, Houston. 

SC Go ahead Houston. 

HOU Roger, now on your EVA tomorrow you will be 

going a rev later but it will be approxi- 
mately the same GET as scheduled. You 
realize that seeing you have not gone into 
your high orbits you will pick up about one 
whole rev in time but we are going to keep 
the flight plan going according to the GET. 
This also means that you will recover a rev 



later tvt it will be at approximately the 

same GET as originally scheudled. 
SC Roger, understand. 

HOU Carnarvon Cap Com, Houston Flight. 

CRO Flight, Carnarvon go ahead. 

HOU Would you send us an Agena Charlie at your 

acquisition? 
CRO Roger . 

HOU Gemini 12, Houston. One minute to LOS Tananarive 

standing by. 
TAN Tananarive LOS. 



This is Mission Control Houston again. That completes the 
recent pass over the Tananarive voice remoting station. In 
the discussion between spacecraft communicator Pete Conrad and 
the crew of Gemini 12, he did mention that the actual ground 
elapsed times of flight plan events would be as on the original 
flight plan but because of being in a low orbit resulting from 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, I966, 1:5^ pm CST 

TAPE 108, 
PAGE k 



not being able to do the high apogee burn the actual events 
will be some one revolution later, because of the spacecraft 
being in a lower orbit travels faster in a shorter period. 
We were expecting acquisition now by the Carnarvon, Australia 
tracking station. We will cut into that conversation as 
soon as we hear the spacecraft communicator at Carnarvon put 
in a call to the spacecraft. They are coming up now, let's 
join it. 

SC Carnarvon, 12 here. 

CRO Okay, I'm shipping up a TX. 

Okay, and I'd like for you to turn your encoder 
off for a minute so we can get a reset timer 
reset command to the Agena. 

SC Roger . 

We're standing by for the update. 

CRO Okay, you can turn your encoder back on. 

All right we have a fuel cell purge section 2, 
followed by section 1 and you are ready to 
copy update is that affirmative? 

SC Roger, we'll start fuel cell purge if you'll 

give us the update. 

CRO Okay. 2k 13 22 S-ll Mode A, 25 1+3 33 S-ll Mode B, 

27 05 00 X-Ray on, data with Mack, 27 13 36 S-29 
Fomaihaut at yaw south 50 degrees , pitch up 50 
degrees. From 27 50 to 28 30 eat period, 28 12 00 
at CSQ a PLA update, 28 27 00 at Hawaii you will 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 12, I966, 1:5^ pm CST 

TAPE 108, 
PAGE 5 

have a crew status report, a fuel cell purge section 1 then 
section 2 and leave the cryo read in H2 for the sleep 
period. At 28 57 00 Mk08 Mode A, 29 30 00 start the sleep 
period, H2 heater off for the sleep period. 
HOU Carnarvon send us an Agena main please? 

CRO Roger . 

At 38 ko 00 end sleep period. Did you copy 

that? 

SC Roger, we got everything except about leaving 

the cryos - is that at H2 at Hawaii with the 
crew status report? 

CRO That is affirmative. 

SC Roger, and also be informed that our delta P 

lights on the fuel cells go out while we consume 
water in making the meals. 

CRO Okay we copy that. 

CRO Okay and let us know when you are through with 

the fuel cell purge. 
SC Will do. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 2: Ok p.m. CST Tape 109 

Page 1 



HOU Carnarvon from Flight . 

CRO Go ahead. 

HOU How about an LOS main Gemini. 

CRO Okay. 

S/c Carnarvon, Gemini 12 is through with the fuel 

cell purge. 
CRO Okay. 

Okay, can you switch to H 2 on your borrow switch 

please? 
S/C H 2 . 

CRO Okay, we've got it, thank you, you can go back to 

0 2 off. 

12, Carnarvon. We have one minute to LOS. We'll 
be standing by. You should be coming into daylight. 

S/C You're right. 

CRO What kind of a day do we have? 

S/C Well, its pretty clear up here. 

CRO Right. 

S/C What have you got down there? 

CRO Haven't had a chance to look at it yet. 

S/C Did anybody ever, find out what was wrong with 

our radar? 
to 

CRO No, not/my knowledge. Seemed like some sort of 

a problem with . . . 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 2:0k p.m. CST Tape 109 

Page 2 



CRO Carnarvon has LOS. Both vehicles. All systems 

go at LOS. 

This is Mission Control Houston again. 23 hours, 22 minutes 
and 50 seconds after liftoff. Both spacecraft as you heard, were 
go on the ground over the Carnarvon pass. It'll be coming up 
over Canton Island voice remoting station in approximately 10 
minutes. And should be approaching Hawaii toward the upper edge 
of the Canton acquisition area. Should be one continuous pass, 
votce-remoted from Houston through Canton and then through the 
spacecraft communicator at Hawaii. This is Mission Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/12/66, 2:20 PM, TAPE 110 

PAGE 1 

This is Mission Control Houston at 23 hours 33 minutes 23 
seconds after lift-off of the Gemini 12 mission. While we 
are standing by for momentary contact with the Canton Island 
voice remoted station which will continue on through the 
Hawaii tracking station pass, we have a time of repressurizing 
the cabin during this morning's standup EVA. It was 21 hours 
58 minutes and 35 seconds ground elapsed time. Now you can 
assume that the hatch was closed some 1 minute earlier than 
this. We now have acquisition and conversation going on 
between Pete Conrad and the spacecraft. Let's join the 
conversation now. 

HOU ••you used on your eclipse photos. 

S/C Roger, I took about h of them, one of them 

was a ... time and I think . . . one second 
was probably very good picture. Four seconds 



we were beginning to break out at that time. 

So I finished that one and one more short one. 
HOU Roger, understand about k photos. 

S/C Roger that's how many we took. 

HOU Okay, thank you. 

S/C How are we doing with that pass 

HOU I didn't copy that, say again please. 

S/C Roger, the update said that the rear window was 

suppose to have a shade on it. 
HOU I will have to check on that for you, I wasn't 

here when all that was going on. 
S/C Yea, ..... 



GEMINI 21 MISSION COMMENTARY, 11/12/66, 2:20 PM, TAPE 110 

PAGE 2 



HOU 12, Houston, we have about six minutes here at 

Canton and we are standing by. 
S/C Roger 
HOU Canton go local. 

CTN Roger, Canton local. 

LOS both vehicles, everything is okay. 
HOU Roger, Hawaii. 

HAW Gemini 12, Hawaii - standing by, we have nothing 

for you. 
S/C Roger, Hawaii. 

HAW Cryo 0 2 tank pressure is down around 780 or 

somewhere to that. 
HOU Okay, let's just both watch it. 

HAW ' Okay. It looks like it is still coming down 

somewhat. 

HOU Okay, keep your eye on it. 

HAW Where are we staying on the dome right now. 

HAW Yea, from what we show on it, it looks like we 

should be able to go clear down to 500 . 
HOU Standby, we will get a number here. 

HAW Okay. 

HOU Yea, we use 500 to call them. 

HAW Okay, very good 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 2:31 PM CST, TAPE 111 



PAGE 1 

HAW We are showing the delta P lights off. 

HOU Survey of delta P lights off. 

HAW Roger. What is the present thinking on that. 

HOU When we take a drink we lower the pressure in 

that water system and allow a little more room 
in there so we don't trigger the pressure switch. 

HAW Okay. We just got all delta P lights on now. . 

HOU Okay. 

HAW No, TM ... sorry about that. 

HOU Okay. 

HAW Hawaii has LOS. 



This is Mission Control Houston again. The change of shift 
press conference of the Green Team of Flight Controllers will 
begin momentarily in the Houston News Center. Participants in 
the press conference will be Mr. William Schneider, Mission 
Director for Gemini 12, Mr. Clifford Charlesworth, Flight Director 
of the Green Team, John Aaron, Electrical Environmental and Com- 
munications engineer and Dr. Fred Kelly from the Green Team. At 
23 hours U8 minutes 31 seconds after lift-off. This is Mission 
Control. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:13 PM CST, TAPE 112 

PAGE 1 

This is Mission Control Houston at 2h hours 27 minutes and 
8 seconds after lift-off. We have accumulated some 6 minutes 
of voice air-to-ground transmission tape during the recent 
state side pass and the pass over the Ascension Island remoting 
station, which accumulated during the change of shift press 
briefing. Let's play those tapes back now. 



CAL California is remoted. 

HOU Gemini 12 Houston. 

S/C Go ahead. 

HOU Roger, I have got a few things to pass to 

you here. First, if you haven't turned on 
your manual 0^ heater would you turn it on, 
please? And bump it up to 700. 

S/C Okay. 

HOU And on your S-29 experiment, between each 

series of photos, would you skip one frame? 
S/C Okay, will do. 

HOU And I have a node update if you are ready to 

copy. 

S/C Houston. . .generally low rate now, we will get 

it a little bit later. 
HOU Okay, and also I would like to talk to you 

about your fuel cells when you have time. 
S/C Okay. 
HOU You want it now? 

S/C Go ahead. 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 3:13PM CST, TAPE 112 

PAGE 2 

HOU Okay. What we feel is happening here on the 

ground that you are leaking some 0^ into the 
water line from the fuel cell. And as you drink 
water you relieve the pressure. We feel that you 
put enough oxygen into the water side now that 
you have completely expanded the N2 bladder and 
therefore you are building up some higher water 
pressure and as you drink water, it can down to 
its normal level and turn out the delta P lights 
as you filled the spacecraft tank. Now to get 
rid of as much water as possible we are going to 
ask you to purge oxygen once every rev for 30 see- 
onds and then we will continue normal hydrogen 
purges, but in doing that the feeling is when 
your first open the oxygen purge valve you 
jettison what water is in there with the oxygen 
flow and by doing a 30 second purge each rev, 
we will get rid of as much product water as 
possible. And we will call you when we want 
you to do the 30 second purge over a station 
once a rev. Do you have any questions on that? 

S/C Roger. What does that do to our oxygen supply? 

HOU It won't affect it because yotfre purging for 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:13 PM CST, Tape 112 



PAGE 3 

HOU 30 seconds once per rev and that is the same 

as for 2 minutes every 6 hours. 
S/C Okay. 

HOU We are watching your oxygen very carefully and 

have the feeling that we will be able to keep 
you okay on Og. No problem. 

S/C Okay. (Keying) camera.... 

HOU 12, Houston. Would you pass me a PQI at your 

convenience? 

S/C We have 52 percent. 

HOU Roger. Understand five two percent. 

S/C Roger. 

HOU Guaymas remote, California local. 

GYM Guaymas remote. 

CAL California local. 

HOU 12, HoUston, in about a minute and a half 



I want to ask you for a short count. We are 
going to remote through an aircraft here in 
Texas just to check it out. And you need not 
acknowledge this transmission. I will call you 
in about 2 minutes. 

Gemini 12, Houston. Would you give me a count to 
10 and down, please? And that is all we needed. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:13 PM CST, TAPE 112 

PAGE 1* 

S/C On your toes, 1-2-3-U-5-6-7-8- 

9-10-9-8-7-6-5-^-3-2-1 Long 
count out. 

HOU Gemini 12, Houston. Outstanding. Thank you. 

GYM Guaymas local. 

Fisher 372 go remote. 

HOU Gemini 12, Houston. Would you do it one more 

time please? 

S/C Okay, 10-9-8-7-6-5-^-3-2-1-2 

3_lt_5.6-7.-8-9 - 10 from Houston, 

we will send it ;to you. 

HOU Roger. Thank you very much for the airplane that 

time. Houston is standing by. Gemini 12, this is 
Houston, we are going back to our normal communications 
configuration at this time. ...372 go local. 
. . .372 go local. 

GBI LOS GBI. 

HOU Gemini 12 Houston 1 minute to LOS Antigua, see 

you via Ascension. Gemini 12, Gemini 12, Houston 
standing by at Ascension. Gemini 12 Gemini 12, Houston 
standing by at Ascension. Over. 

S/C Very great. 

HOU 12, this is Houston say again. Oh, busy, I got 

you. Never mind. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:13 PM CST, TAPE 112 

PAGE 5 

HOU Gemini 12, Houston. One minute until LOS 

at Ascension. Standing by. 
S/C This is Gemini 12. 

HOU Go ahead, 12, this is Houston. 

S/C Roger, We seem to be having the same problem 

we were having yesterday in getting the Agena 

to hold, it is starting already to gyro compassing 

and. . . 

HOU Roger, are you using FC-1? 

S/C Negative Flight, mode 2. 

HOU Okay. 12, this is Houston. The last time we were 

able to look at you, you had not stablized at the 
time you turned the ACS off. And the horizon sensors 
were still on. You might go over your whole set of 
commands again. And ensure that it is damped itself 
before you turn it off. 

S/C You mean turn it on? 

HOU Do you have it on now? 

S/C Negative, it is not on now. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11/12/66, 3:23 P-m. TAPE 113 

PAGE 1 

HOU Is it on now. 

S/C ... is on now. 

HOU Okay, but what you are telling me is that when 

you did have it on.gyrocompassing, it didn't 
seem to be responding. It was over -shooting 
and coming back, is that right. 

S/C That is affirmative. 

HOU How far was it over -shooting. 

S/C 90 degrees. 

HOU 90 degrees. 

S/C Yea, we still show the proper aim .. and got 

the proper command in for TDA forward and 
in Plight Command Mode 2 ... the Agena control 
and she took off on 90 degrees. We have 
double checked our commands. 

HOU I see, Okay, let us kick it around for a little 

bit. 

S/C Roger . 

HOU 12, Houston, when did this happen. Were you over 

the states. Was this while you were still over 
Ascension and over the range. 

S/c I'm not for sure where it was happening, Houston. 

HOU Okay. 



GEMINI 12 MISSION COMMENTARY 11/12/66, 3:23 p.m. TAPE 113 

PAGE 2 

This is Mission Control at 2k hours, hi minutes and 2 seconds 
after liftoff. That completes the pass over Tananarive voice 
remoting station. We have loss of signal there and in some 
ten minutes the spacecraft and Agena will be passing over the 
Carnarvon, Australia tracking station, mid-way through the 
sixteenth revolution. We will come back up at that time. 
This is Mission Control, Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:3*+ M. CST 

Tape Ilk, Page 1 

This is Mission Control Houston at 2h hours, 1+8 minutes 
and three seconds after liftoff. Gemini 12 momentarily be 
picked up electronically from the Carnarvon, Australia tracking 
station. We're standing by for spacecraft communicator out at 
Carnarvon to put in a call to Gemini 12. They now have telem- 
etry solid at Carnarvon. Carnarvon is now putting in a call. 
Let's listen. 



S/C Go ahead, Carnarvon. 

CRO I'm going to send you up a TX. 

S/C Roger. 

CRO Okay, we've got an Agena clock reset load. 

We'd appreciate if you'd turn your encoder 
off. 

S/C Encoder off. 

CRO Okay, 12, Carnarvon. You can turn your 

encoder back on again. 
HOU Carnarvon from Plight. 

CRO Go ahead. 

HOU Ask him how he thinks the Agena is performing 

right now. 

CRO Okay. Looks real steady from the ground, Plight. 

CRO 12, Carnarvon. 

S/C Go ahead. 

CRO Okay, we show you in FC2, Agena 0 0 0, and you 

BEF. Is that affirmative? 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:3*+ P. M. CST 

Tape llU, Page 2 



S/c Roger, we're not too sure yet. We're in that 

area where we can't see the ground at all. 
We were just about ready to ask you what you 
had down there. 

CRO Right. We show the ACS is on, horizon sensors 

are on and you're gyrocompassing TEA. forward. 
Everything looks pretty steady down here. Could 
you give us any idea from up there? 

S/C Yeh, we're steady from here too. I guess maybe 

we're just going to take a little time to gyro- 
compass around and get settled down. 

CRO Okay. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU We agree that we ought to let it settle down 

and give it time to gyrocompass. The other 
think we'd like them to check is that when 
checklist calls for horizon sensors off, did 
he note that the last time out, we may or may 
not have seen that over the states. 



CRO Okay, You did not see it over the states? 

HOU That's right. 

CRO Right. 

at 

HOU But, we just might not have contacted/the time, 

Jim, but you might remind him of it. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3*3^ P. M. CST 

Tape 114, Page 3 



CRO Okay. 

CRO 12, Carnarvon. 

S/C Go ahead. 

CRO Okay, just a reminder that when you go through 

that checklist and come to horizon sensors off, 
that you might put it in there that it seems as 
though over the states they note it still on. 
They didn't notice the off sent. 

S/C All right. 

CRO Okay, and right now, you're perfect. You're 

there at TDA forward and no yaw park rates at 
all. You're real great. Though you might just 
have to give it a little more time to gyrocompass. 

S/C Right. 

CRO Flight, Carnarvon. 

HOU Go ahead. 

CRO Okay, we're noticing a slight increase trend in 

the OCSA nitrogen pressure., temperature, excuse 
me. It's 86.3 now. 

HOU Going up? 

CRO Affirmative. 

HOU Okay. 

CRO Okay, we show Canaveral about 82.7, 81.5 at 

Texas . 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 3:3^ P- M. CST 

Tape Ilk, Page k 



HOU Okay, we'll watch it. 

CRO One minute to LOS at Carnarvon and standing by. 

HOU And can we have an LOS main Gemini, please. 

CRO Roger. 

HOU And a contingency India. 

CRO Roger. 

CRO Carnarvon has LOS Gemini. 



This is Mission Control Houston, 2k hours, 57 minutes and 
25 seconds after liftoff. We have had loss of signal at the 
Carnarvon, Australia tracking station. We'll he coming up 
over Hawaii at 25 hours and 13 minutes which will be some 20 
minutes from now. We'll come back up at that time. This is 
Mission Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/12/66, U:00 p.m. TAPE 115 

PAGE 1 



This is Mission Control Houston, at 25 hours, 13 minutes and 
18 seconds after liftoff. We are standing by here for 
acquisition at the Hawaii tracking station which should come 
up any moment now. Still standing by for Hawaii. According 
to the site acquisition table, it should be in about four 
seconds. Hawaii does have telemetry solid both vehicles. 



Let's standby now for any air-to-ground conversation. 



HAW Gemini 12, Hawaii, we would like to do a 30 sec- 

ond fuel cell purge whenever you are ready. 

S/c Roger, go ahead. Which section would you 

like. 

HAW We would like both sections, we can start out 

with section one first. 
S/c Roger, start out with section one - 30 seconds. 

HOU That is just oxygen, Hawaii. 

HAW And that's oxygen only on this. 

S/C Roger, 0 2 only. Purging on section one. 

HAW Roger . 

S/C Roger, on section two. 

S/C Roger, fuel purge off. 

HAW Roger, thank you, looks good. 

We have nothing further for you, we will be standing 

S/C Roger. 



GEMINI 12 MISSION COMMENTARY , ll/l2/66, U:00 p.m. TAPE 115 



PAGE 2 

HAW And we have no Delta P lights at this time and 

no Delta P lights during the purge. 
HOU Were they on before the purge. 

HAW That's negative. They were off the whole time. 

HOU Thank you. 

HOU Hawaii from Flight. . 

HAW Go, Flight. 

HOU Would you ask him if the EVA jettison list was 

normal or were there any exceptions. 

HAW 12, HAWAII. Was the EVA jettison list normal 

or were there any exceptions on it. 

S/c It was normal except the command pilots ECD 

was not jettisoned. 

HOU Thank you. 

HAW Roger, thank you. 



This is Mission Control. We are still over the Hawaii tracking 
station waiting for additional conversation between spacecraft 
communicator at Hawaii and the crew of Gemini 12. We still 
have some three minutes and 10 seconds in this pass. Probably 
unlikely we will have any further conversation, but we will 
standby just in case. There will be a gap of oh, some 2 min- 
utes between the Hawaii loss of signal and acquisition at 
California and the Stateside pass at the end of the 17th rev- 
olution and the beginning of the l8th. We will standby for 
further conversation from Hawaii. 



GEMINI12 MISSION COMMENTARY , 11/12/66, 4:00 p.m. TAPE 115 

PAGE 3 

HAW 12 , Hawaii, we will have LOS in a minute. 

S/C Roger. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, kilO PM CST TAPE 116 

PAGE 1 

HAW Hawaii has LOS both vehicles. ..turn the 

control system off on the Agena and went to the 
Gemini control system right at our LOS. 

HOU Roger, Hawaii. 

HAW Everything was go at LOS. 

This is Mission Control Houston. During that pass over Hawaii 
there was a purge of the fuel cell system aboard the spacecraft. 
We are waiting momentarily, contact through the California station 
from which spacecraft communicator Pete Conrad here in Mission 
Control will converse with the crew. We should be having 
contact any moment now. In fact they are already a couple of 
seconds past the time due according to the side acquisition 
table. During this pass the - another run of the airglow horizon 
photography experiment S-ll, is scheduled to be run during the 
pass over the Eastern Test Range just as they go into darkness. 
We will stand by now for conversation during this state side 
pass. 

HOU 12, Houston. How is everything going? 

S/C Roger, this pass looks a lot better than the 

last one. We are pretty well stablized. 

HOU Okay, I kind of think from what we could see 

on the ground that you may not have had enough 
time for the Agena to settle down. That's all. 
You can get her set up 15 minutes or so in 
advance I think it will work all right, for you. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, If: 10 PM CST TAPE 116 

PAGE 2 

S/c All right. We are following the procedures of 

the S-ll and we are upside down now. 

HOU Okay. I have got an S-6 update for you which 

the weather people are quite interested. Can 
I give it to you now? 

S/C Go ahead. 

HOU Okay, the time is 26 ^9 will be an S-6, the 

yaw is zero, pitch down, 30 and it seems to be 
some perculiar air mass anomaly. I guess there 
is a clouds associated they would like to get a 
picture of it. 

S/C Okay, I will give it a try. 

HOU Okay, and have you gotten node update? 

S/C No, would you pass that up. 

HOU Okay. Time 25:0^:17 node rev l6, 151.0 east and 

right Ascension is 11 hours 21 minutes. 
S/C Right, thank you. 

HOU And, in the world of sports today Notre Dame 

6k, Duke 0. Mississippi 1^, Teneessee 7. We 
will have some more for you in a little while. 

S/C Sounds great. 

HOU Guaymas remote, California local. 

GYM Guaymas remote. 

CAL California local. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, If: 10 PM CST TAPE 116 

PAGE 3 

HOU Texas remote, Guaymas local. 

GYM Guaymas is local. 

HOU Okay. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-12-66 U:20 pm CST Tape 117 

Page 1 



LOS Antigua 
LOS GBI 

HOUSTON 12 Houston, do you have time to copy another update 

or not, I don't want to bother you. 
S/C A. quickie. 

HOU Okay it's another S6. 28 09 5^ S6; yaw zero, 

pitch down 30; it's a centralized storm near the 
Phillipines. We'd like to get those pictures if 
possible. 

S/C Will do. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, k:31 P. M. CST 

Tape 118, Page 1 



HOU 12, Houston. One minute to LOS Antigua, 

standing by. 
ANT LOS Antigua. 

This is Mission Control Houston at 25 hours, 46 minutes 
and 55 seconds after liftoff. That was a rather quiet station 
pass over the stateside range. We'll be coming up over the 
Ascension station in some five minutes from now. We'll come 
back up at that time. This is Mission Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, h:hO p.m. TAPE 119 

PAGE 1 

This is Mission Control Houston. Spacecraft Communicator Pete 
Conrad just put in a call to the spacecraft through the 
Ascension station. Let's join that conversation now. 
When contact was first established through the Ascension 
station, Pete Conrad said, "this is Mission Control Houston 
standing by" through the Ascension station. We are still 
waiting for further conversation. Apparently the crew - is 
still busy in this round of the Air glow horizion photo- 
graphy experiment. We will continue to standby and monitor 
the air-to-ground, 
(dead air) 

Still two minutes and 33 seconds remaining of this Ascension 
Island pass. They are still very quiet. Standing by for 
any possible conversation between the spacecraft Gemini 12 
and Spacecraft Communicator here in Mission Control, 
(dead air) 

HOU Gemini 12 , Houston - one minute to LOS , 

Antigua standing by. 
S/C 

HOU This is Houston, 12, I didn't copy that 

S/C difficulty with the shutter closed. 

HOU Roger, understand. 

ASC Ascension, LOS. 

This is Mission Control Houston. We have had loss of signal 
over the Ascension Island station at 26 hours, 1 minute and 
9 seconds after liftoff. This is Mission Control Houston. 
END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-12-66 U:55 pm CST Tape 120 Page 1 

This Mission Control Houston 26 hours 8 minutes 30 seconds after 
liftoff. Gemini XII is coming up over the Tananarive voice de- 
moting station. Should have acquisition within the next 2 seconds. 
We'll be standing by for any conversation between Houston through 
the Tananarive station to the crew of Gemini XII. Let's stand by 
now on air ground and see what and listen to hear what is said. 



HOU Tananarive go remote. 

TAN Tananarive remote. 

HOU Gemini 12, Gemini 12 Houstdn at Tananarive over. 

S/C Roger, Houston. 

HOU Roger, 12 could you tell me how much S29 film you 



have remaining? And with respect to your camera 
problem you might check that the F stop has not 
slipped underneath the tape if it's out of the 
detent, it is possible that the shutter won't 



operate quite correctly and also if the lens is 
not rotated all the way in to the detent on the 
camera this also may happen. 

S/C We finally figured a way to get it to working. 

HOU Say again please. 

S/C Roger, we have... 

HOU Houston copy. 

S/C We have between 10 and 15 S29 and Sll shots left 

on this magazine and we have another full magazine. 
HOU Houston copy. 



GEMINI XII MISSION COMMENTARY 11-12-66 U:55 pm CST Tape 120 Page 

HOU Gemini 12 Houston, one minute to LOS Tananarive 

standing by. 
TAN Tananarive LOS 

This is Mission Control Houston, we have had loss of signal at 
the Tananarive voice remoting station. The next station to be 
acquired will be the Carnarvon Australia tracking station in 
approximately 9 minutes, at 26 hours 16 minutes and 50 seconds 
after liftoff this is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , ll/l2/66, 5:11 p.m. TAPE 121 

PAGE 1 

This is Mission Control Houston at 26 hours, 25 minutes and 
7 seconds after liftoff. We should be coming into the 
Carnarvon, Australia acquisition area. We are standing by 
for a fairly brief interchange here over that station. It is 
a very low elevation angle pass, the last one of the day. As 
a matter of fact the elevation is only some 3 .09 degrees for 
a duration of four minutes, hi seconds. Let's join that 
conversation now. 
(dead air) 

A fairly quiet pass up to now over Carnarvon. The spacecraft 

communicator out of Carnarvon, Jim Fucci, said earlier that 

he was standing by. He called the spacecraft and said, 

"Carnarvon standing by". 

CRO Flight, Carnarvon. 

HOU Go ahead. 

CRO Okay, we have pretty intermittent TM, but it 



looks like the ECS control valve outlet cap 



primary is cycling. 



HOU 



From what to what. 



CRO 



Uh, let's see, about 20 up to around 50 degrees. 



HOU 



Okay, 20 to 50, that's the ECS primary out. 



CRO 



That is affirmative. 



HOU 



Okay. 



CRO 



Now, that may not be too valid a reading because 



of our intermittent TM, but the rest of it looks 



pretty solid, so I can assume it is fluctuating 



right now. 



GEMINI 12 MISSION COMMENTARY, ll/l2/66, 5i.ll p.m. TAPE 121 



PAGE 2 

HOU Okay, thank you Jim. 

CRO Right. 

CRO It looks like it is cycling for about 26 to 3k 

degrees . 
HOU 26 to 5k. 

CRO That's affirmative. 

CRO One minute to LOS, and standing by 12. 

S/C Roger. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU How fast is that fluctuating, Jim. 

CRO About 20 seconds for one complete cycle. 

HOU Goes up and back down in 20 seconds. 

CRO Up, down and up. 

HOU Okay. Carnarvon, have them turn the A pump on 

in the primary loop. 
CRO Roger. 12, Carnarvon. Turn the A pump on in the 

primary loop. 
HOU Tell them why. 

CRO 12, Carnarvon. 

S/C Go. 

CRO Okay, we are getting fluctuation on your primary 

temperature in your control now. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:11, 



TAPE 121 
PAGE 3 



S/C 



Roger, you want the B pump off right. 



CRO 



Roger, that is right. 



CRO 



We have had LOS. 



This is Mission Control Houston. We have had loss of signal 
at the Carnarvon, Australia tracking station. The next station 
to acquire Gemini 12 will be the Hawaii station in some 19 min- 
utes from now. We will come back up at that time and carry 
that conversation. This is Mission Control Houston. Twenty- 
six hours, 30. minutes, 50 seconds after liftoff. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/12/66, 5:36 PM CST, TAPE 122 

PAGE 1 

This is Mission Control Houston at 26 hours 1+9 minutes and 
6 seconds after- lift-off. Gemini 12 at the present time is 
now coming up on the Hawaii station. We should have acquisition 
at any moment. We will stand by for any conversation between 
spacecraft communicator Keith Kundel at Hawaii, and the crew 
of Gemini 12. Let's. listen in. 

HAW We have initial TM contact on both vehicles. 

It is still a little shakey at the present. 

We are getting intermittent radar track. 
HOU Okay. 

HAW Gemini 12, Hawaii. We have a 30 second purge 

to do some time during this pass, so we show 
TM intermittent. We would like to wait until 
later on in the pass, to do it. 

S/C Roger, Hawaii. Have you had some pretty 

bad weather down there today? 

HAW No, it has been doing quite a little raining. 

It is raining pretty heavy outside right now. 
It looks like... solid TM, tape dump started. 
12, Hawaii. TM is looking good and solid at 
present. Whenever you are ready to start that 
purge, let us know. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:36 PM CST, TAPE 122 

PAGE 2 

S/C Hawaii, would you tell us which section to 

go first, please? 
HAW Let's start section 2 on this one. 

Does it make any difference Flight? 
HOU 2 and then 1. 

HAW Roger, let's start with section 2 and then 

section 1. 

S/C Roger, here is section 2. 

HAW Purge on. 

HOU Roger . 

S/C Let me know when it is off. 

HAW Roger. Section 1 purge on. 

HOU Roger, thank you. 

HAW Purge off. 

S/C 

HAW Roger, thank you. 12, it looked good from 

here. 

HCU Hawaii Com Flight. 

HAW Go Flight. 

HOU How is is control valve look. 

HAW I get no cycling. 

HOU Roger. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:36 PM CST, TAPE 122 



PAGE 3 

HAW It looks like we might have lost a little bit 

of the tape dump off probably due to antenna 
shading. 12, Hawaii. We just sent you a TX. 

S/C Roger. 

HAW 12, Hawaii. We will have LOS in approximately 

1 minute. 
S/C Roger. 

HAW Hawaii has LOS. Everything was go at LOS. 

HOU Roger, Hawaii. 



This is Mission Control Houston. We have had loss of signal 
at the Hawaii tracking station. During the pass over the station 
which was rather quiet conversation wise, there was a purge of 
the Gemini 12 fuel cell system. The California station is due 
to acquire momentarily within the next 27 seconds or so. We 
will stand by for the beginning of conversation between space- 
craft communicator Pete Conrad here in Mission Control and crew 
of Gemini 12. This particular pass toward the end of the 17th 
revolution will curve down over the central portion of Mexico 
through Central America and across the canal zone. And over the 
northern portion of Brazil. Standing by for telemetry contact. 
Pete Conrad is putting in a call. Let's join. 
HOU Gemini 12, 

END OF TAPE 



GEMINI XH MISSION COMMENTARY 11-12-66 5':U6 pm CST Tape 123 Page 1 



Pete Conard is putting in a call, let's join... 
HOU Gemini 12 Houston, over. 

S/C Go ahead Houston. 

HOU Roger, we'd like you to power down your A pump in 

the primary loop and bring the B pump back on 

again so we can watch it over the states. 

And we'll give you a call when to do that when 

we have telemetry. 
S/C Well, we just did that. We just powered down the 

A and put on the B. You want us to reverse that? 
HOU No, leave it on. I don't have much else for 

you. Navy 30 Vanderbilt 14, I'm still waiting on 

the Army score. 
S/C It's about time Navy won. 

HOU Roger. 

While we are waiting for further conversation between the ground 
and spacecraft Gemini 12, about 12 minutes from now the S29 moon 
librations regions photography experiment is due to be run. Let's 
join the conversation again. 
S/C Say Houston, 12 

HOU Go ahead 12. 

S/C We're still trying to operate the Agena correctly 

and no matter what we try, the doggone thing just 
keeps going around. There must be something wrong 
with it, we've gone through commands a dozen times 



GEMINI XII MISSION COMMENTARY 11-12-66 5:^6 pm CST Tape 123 Page 2 \ 

and unless we send these things out perfectly get 
right on the old heading, stop all over rates with 
the old control system and then set it up she ' s 
okay otherwise she keeps on travelling. 

HOU Roger, we copy. 

Guaymas remote, California local. 

GYM Ouaymas remote 

CAL California local 

S/C We just found out BEF to go to TEA. south, and yawing 

around a bit at 360 and we're BEF again. That's the 
kind of thing that happened. 

HOU Roger, did it stop or did you have to stop it? 

S/c Well, it never d66s stop at any reasonable heading 

it went up to a pitch up of about ho degrees or so 
and it was going past SEF. 

HOU Roger, is this in SC 1 or 2 or have you tried both? 

S/C It doesn't seem to make too much difference 

HOU 12 Houston, we're waiting to acquire you at Texas 

here where we can look at the telemetry and see if 
we can see anything on it and we'll keep you advised. 

S/C Roger, we're just taking over control again so we can 

get ready for S 29, and see what we can do. 

HOU Roger, one other thing. Have you tried to stabilize 

it with the horizon sensors and the GO rate off to 
determine if your gyros are working alright and maybe 
that would help us to isolate the problem. 



^ * i. L L i L 



GEMINI XII MISSION COMMENTARY 11-12-66 5:^6 pm CST Tape 123 Page 3 V 



S/C We'll give that a try when we get some time here. 

HOU Okay, I think one thing that would be a help to 

us would be to go inertial on it with the G 0 rate 
off and the horizon sensors off and say and FC 2 
and see if it will hold the fixed heading in whatever 
attitude you're in and then bring on your G 0 rate 
and then your horizon sensors and then your gyro 
compassing. 

S/C Yeah, that does real well, in holding inertial re- 

reference and also does quite well with G 0 rate 
normal and reverse without horizon sensors. It is 
only when you tie that horizon sensor in with the 
gyro compassing that it doesn't seem to want to 
play the game right. 

HOU Well, it sounds like then you do have something in 

gyro compassing circuit and we'll see ... .you're 
coming up on the time for S 29 you can't try and 
power up for it while we're looking at you. We 
have you here for about 5 minutes. 



S/C Okay, we have the attitude system off on the Agena 

now. 

HOU Roger, understand it's off. We're seeing that the p 

pitch horizon sensors are to the yaw channel 
HOU Texas remote Guaymas local. 

HOU Texas remote 

GYM Guaymas is local 



V 

GEMINI XII MISSION COMMENTARY 11-12-66 5:^6 pm CST Tape 123 Page k 



S/C Roger. ...pitch a right sensor yaw when we want 

it to go TEA. south. That's when we did the 360. 
HOU Roger, under stand. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 5:56 p.m. TAPE 12l+ 

PAGE 1 

HOU 12, Houston, you can leave the B pump on in 

the primary loop. It looks alright now. 

HOU 12, Houston, you can leave your B pump on. It 

looks pretty good. 

S/C Roger, primary B on, primary A off. 

HOU 12, Houston, would you put your quantity read 

switch to 0 2 please. 

GBI LOS, GBI. 

HOU 12, Houston, you can put your quantity read 

switch to OFF. Thank you. 

S/C Roger - You are to be advised the update on 

S-29 27:13:36. Sunset came just after that 
time and it's impossible to see any stars 
enough to get a shot with the vibration we have. 
We are trying again at 27:1^:57. 



HOU Roger . 

S/C We can attempt to try and see if we can't get 

a shot of it a little later time. 
HOU 12, this is Houston - Roger. 

HOU 12, Houston. 

S/C Go ahead. 

HOU Roger - we just want you to point there at that 

region and go inert ial. 
S/C Roger. 



GEMINI 12 MISSION COMMENTARY , 11/12/66, 5:56 p.m. TAPE 12U 

PAGE 2 

HOU 12, this is Houston. You have about one and 

a half minutes, one minute to LOS - standing 
by. 

HOU 12, Houston. X-ray - ON, Beta with Mag. 

GTI LOS, Turk. 

This is Mission Control Houston. We have had loss of signal 
through the Antigua station of the Eastern Test Range. There 
will be a very low elevation angle pass over Ascension Island 
voice remoting station. As a matter of fact, the elevation 
angle is only 1.3 degrees for a duration of three minutes and 
20 seconds, hardly time to even establish contact. However, 
we will standby. During this just completed stateside pass, 
a certain amount of conversation was carried on from Mission 
Control here and the crew regarding some apparent problems in 
the Agena stabilization system in the gyrocompass mode, where 
it tends to drift somewhat in attitude while in the gyrocompass ing 
mode. However, all the other stabilization modes seem to func- 
tion properly in the Agena. The Agena systems engineers 
and various others here in the Control Center are going over 
the schematics and telemetry indications to see what the problem 
might be. Perhaps there will be more discussion later on on 
this minor problem. At 27 hours, 19 minutes, 28 seconds after 
liftoff, this is Gemini Control. 



END OP TAPE 



GEMINI 12 MISSIOJ COMMENTARY, 11/12/66, 6:l6 PM CST, TAPE 125 

PAGE 1 

This is Mission Control Houston at 27 hours 29 minutes 37 sec- 
onds after lift-off. Let's tune in on the conversation through 
the Ascension Island tracking station. 



HOU Roger, Gemini 12, would you check your X-ray 

Beta switch with mags please. 
S/C Okay. 

HOU And 12, we are going to try to get you to 



a little gyro compassing exercise over the 
CSQ. We would like you to be either TDA north, 
or TDA south as you arrive over the CSQ, and 
then setup the commands to gyro compass so that 
the TDA is aft or spacecraft SEF, so we can watch 
the gyro compassing circuit on the telemetry. 

S/C ...CSQ gyro compass spacecraft SEF... 

HOU Roger, we want to have you gyro compass for 

90 degrees and so we can watch the circuit there. 
So you could be TDA south or north and plan 
to setup your command so that you gyro compass 
at FC-2 to spacecraft SEF. That is correct. 

S/C Roger,... we are still trying to get... without 
a platform reading. . rate command 

HOU Roger, I think I copied you. You said your 

pointing commands are not good enough without 
your platform, is that what you are saying. 
You are not sure where you are pointed. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 6:16 PM CST, TAPE 125 

PAGE 2 

S/C That is affirmative, when you go into the 

darkness 50 degrees up and 50 degrees down 
means nothing to you. You can't see a thing. 

HOU Roger. I copy. We will work this out and 

see if we can't give you something better than 
that and we can talk to you at Hawaii. 

S/C Roger. We are ready for a 5.5 update... 

HOU 12, this is Houston. I didn't copy that 

last one. Comm is pretty bad. 12, Houston 
we are about 1 minute until LOS. Standing 
by. 

S/C Roger. 

This is Mission Control Houston. Apparently we have had 
loss of signal, from the Ascension Island voice remoting 
station. During that pass the spacecraft communicator here 
in Mission Control passed to the crew some instructions for 
an exercise in operating the Agena gyro compassing system on 
the upcoming pass over the tracking ship Coastal Sentry south 
of Japan. The purpose of this will be to allow the Flight 
Controlers aboard the Coastal Sentry to examine the gyro 
compassing circuits on telemetry to perhaps determine what 
the problem is in apparent deviations from attitude while in 
the gyro compassing mode. At 27 hours 35 minutes 17 seconds 
after lift-off, this is Mission Control Houston. 
END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-12-66 6:30 pm CST Tape 126 Page 1 

This is Mission Control Houston, 27 hours k3 minutes and 38 seconds 
after liftoff. Gemini XII is within a few seconds of being acquired 
by the Tananarive voice remoting station from which we anticipate 
a brief conversation between Houston and the crew of Gemini XII. 
Mean while their flight plan at the present time calls for an eat 
period lasting from 27 hours 50 minutes ground elapsed time to 
28 hours 30 minutes. We are standing by for acquisition of signal. 
Tananarive does have acquisition. Let's join the conversation. 
HOU Gemini 12 Houston through Tananarive, over. 

S/C Go ahead, Tananarive. 

HOU Gemini 12 Houston through Tananarive, I'm not 



reading you, you're reading me to give you a 
little more on this test over the CSQ. We would 
like for you to send all commands to gyro compass 
the 90 degrees to the SEF position and while over the 
CSQ, and if you will send the commands slowly they can 
verify that each command is going in and verify that 
we are getting the correct response. And then we can 
watch it from there . 



HOU 



Roger. 12 Houston, how do you read me now? 



S/C 



Read you loud and clear. 



HOU 



Roger, did you copy my last, over. 



S/C 



Roger , we ' 11 send those commands over CSQ, and we ' 11 



be in VOX and say it slowly so we can verify each 



one . 



GEMINI XII MISSION COMMENTARY 11-12-66 6:30 pm CST Tape 126 Page 2 



HOU Okay and at ascension I didn't quite copy the last 

thing about the problem you were having pointing, is 
there something that we can give you that will help 
this or are you just saying that you are having 
difficulty locating that region from Fomalhaut? 

S/C My only comment there Houston is something like 

this going on here we're getting the region that 

is high in the sky at sunset that we can't get 

to that Without a platform. We have no horizon 

to go by. We are going in to darkness and the 

light is reflecting off the Agena so we have 

nothing to look at. It requires a lot attitude 

fuel on the spacecraft part to determine where 

we are after sunset, to line up the stars and get 

in to position to take the pictures which means 

that we are late in doing S 29 and we finished it 
setting 

just as the libration region is / which is 
too late. 

HOU Roger, copy. Yeah, I guess the only thing we can do 

for you there, I guess you'd better wait until you 
are dark adapted and then just go as rapidly as possi- 
ble to Fomalhaut and over. 
S/C Roger, either that or add a platform. . .one of the two 

HOU Roger, well, we want to save that oxygen so we would 

like to leave.it down. 

hindsight 

S/C Roger, for /" . we were set up for it at the end 

of the 95 night pass if we hadn't had the S6, we 



GEMINI XII MISSION COMMENTARY 11-12-66 6:30 pm CST Tapel26 Page 3 



could have stayed inertial all time. 
HOU Roger. 12 Houston. We have about one minute to 

LOS standing by. 
Tananarive LOS 

And this is Mission Control Houston at 27 hours 52 minutes k2 
seconds after liftoff in the Gemini XII mission. The next 
station which will acquire spacecraft Gemini XII will be the 
tracking ship Coastal Sentry in approximately 15 minutes. At 
that time there will be an exercise run with the Agena gyro 
compassing system to allow flight controllers aboard the ship 
to check out the circuitry by means of telemetry to perhaps pin 
point the source of the erratic performance of this particular 
mode of the Agena stabilization system. We'll stand by in 15 
minutes for that particular pass. This is mission control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/12/66, 6:5^ pm CST, TAPE 127, PAGE 1 

This is Mission Control Houston. We're at 28 hours 7 minutes 
and 2 seconds after liftoff. We're coming up over the tracking 
ship, Coastal Sentry with Gemini 12. At this time, their 
schedule will be S-6 Synoptic Weather Photography experiment of 
a tropical depression just east of the Phillipine Islands; however, 
let's now tune in to the air-to-ground conversation between the 
Coastal Sentry and the crew of Gemini 12. 



CSQ Gemini 12, CSQ 

S/c Roger, CSQ, go ahead. 

CSQ Roger. Before we start this test, we'd like 

you to turn your encoder off. 
S/C Roger, the encoder is off and the situation is 



this, the spacecraft control the combination 
the TDA North, the spacecraft south, the 
spacecraft is still holding that situation, 
and anytime you are ready, we'll go and send 
command to gyro compass the Agena around in 
flight control mode 1 to spacecraft SEF, TDA 
west. 



CSQ Okay, now, you; re still having this difficulty 

in flight control mode: 1, is that correct? 

S/C In both flight control mode 1 and 2. 

CSQ Okay, we'll run the test in 1. 

HOU And we better be in high rise and sensor gains, 

CSQ. 

CSQ Roger, flight 



GEMINI XII MISSION COMMENTARY, 11/12/66, 6:5^ pm CST, TAPE 127, PAGE 2 



CSQ You can turn the encoder back on and we'd 

like to run this test in high rise and 
sensor gain. 

S/C Rog, CSQ, 

CSQ Okay, give us a call when you're ready to go 

and call the command out, CSQ. 
HOU CSQ flight, is he in high rise and sensor gains? 

CSQ They've got the ACS off right now, flight. 

HOU Okay. The normal checklist flight control mode 1 

has high horizon sensor gains for gyro compassing 

and I want to start that way. 
CSQ That's affirmative, and I advised them that. 

HOU Okay. 

CSQ He says roll right, set your yaw high RP 

r. Go ahead 12. 

S/C Roger in reverse 360 

CSQ TDA a spacecraft SEF. Roll right on the schedule 

310. ...out 320. ACS is on kOl. 
S/C Say again. 

CSQ ACS just went on. 

HOU Roger 

S/c horizon scanner on 301, GO rate on 351, gyro comp 

on to 3Ul. 



GEMINI XII MISSION COMMENTARY, 11/12/66, 6:5U pm CST, TAPE 127, PAGE 3 



HOU TDA north. CSQ, flight 

CSQ Go ahead, CSQ 

HOU Do you see it coming around? 

CSQ That's affirmed. He's torqueing it into yaw, 

but I don't think we're getting very much out 
of this, stand by one flight. Flight, CSQ. 

S/C Instead of going FDS, we're going BEF. 

HOU Go ahead. 

S/C Okay, I think we ought to organize this just 

a little differently, maybe do it at Hawaii. 
The Agena during the test is still unstable. 

HOU Say again? 

S/C It wasn't lined up, the Agena wasn't when we 

started the test. We pulled it around with 
the Gemini and then turned it loose. 

HOU Yeah, Okay, but that UTr cages the gyros and then 

it should gyro compass the SEF. 

S/C It's coming around all right. 

HOU The wrong way? 

S/C A little bit. 

CSQ This is CSQ, I'm transmitting you a TX. 

S/C Roger. 

HOU CSQ, flight. Ask him which way he is yawing. 

CSQ The way we see it, he's not doing much of 

anything. They've started to move toward medium 
position, but now it's just standing half way 
between BEF and spacecraft pointing south. 



GEMINI XII MISSION COMMENTARY, 11/12/66, 6:5*4- pm CST, TAPE 127, PAGE 1+ 



S/C We see sane high tracking in yaw. 

CSQ Did you say you were fairly stable at that 

attitude? 

S/C It's yawing around to the left now. 

HOU That's the way it's supposed to go, CSQ. 

He started a little bit off, he might go that 
way. CSQ, flight, how does it look? CSQ. 

CSQ I don't really know, flight. 

HOU say again. 

CSQ I don't really know, flight. 

HOU Okay, tell them that if it doesn't get the 

attitude while still in contact, we'll let it 
go to Hawaii and continue to watch it. It may 
be coming around all right. 

CSQ 12, CSQ 

S/C (garbled) 

CSQ Okay, if you don't get the attitude in about 30 

seconds, let it go and we'll pick it up over 
Hawaii. 

S/C Roger, it seems to be fairly well behaving this 

time. 

CSQ Roger. 

S/C It went pretty nicely last night in SEF position, 

it could possibly be that we gyro compassed to 
either a north or a south position.... 



GEMINI XII MISSION COMMENTARY, 11/12/66, 6:5^ pm CST, TAPE 127, PAGE 5 



CSQ Rog. 

S/c It seems to be slowing down now, with the SEP 

attitude . 

HOU Is it coming SEP? Let's just leave it alone and 

see how it works. 
CSQ We've had LOS on Gemini. 

HOU Okay. I didn't copy his last, did he say it 

was coming around and slowing down and looked 
alright? 

S/C A gyro rate over Hawaii. 



And this is Mission Control Houston 28 hours 15 minutes hi seconds 
after liftoff. As you monitored that pass over the CSQ, the test 
of the gyro compassing mode of the Agena target vehicle was run 
through and we're going to follow through on the test during the 
upcoming Hawaii pass which should begin about 10 minutes from now. 
This is Mission Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:11 PM CST, TAPE 128 

PAGE 1 

This is Mission Control Houston at 28 hours 2k minutes kk sec- 
onds after lift-off. We are coming up on Hawaii station. We 
are within 1 minute from acquisition at the Hawaii station. We 
are - spacecraft communicator Keith Kundel is standing by to 
continue the gyro compass exercise with the Agena. During this 
pass to follow through on the test that were being run and checked 
by ground telemetry. Earlier in this revolution over the Coastal 
Sentry tracking ship. Standing by for the initial contact. Okay 
let's join that conversation. 

HAW. Roger, looks like he is going around okay here. 

S/C I was thinking we might want to try that north or 



south heading, but we have got to do some hoS 



coming up shortly. 



HAW 



Yes, roger. We will see what Flight thinks about 



doing all this. Also we are going to have another 



one of those 30 seconds purges plus I have got a 



block k update for you too. And crew status report. 



S/C 



Okay, we are in the process of working on the 



meals. We may have to delay the crew status 



report . 



HAW 



Roger . 



HOU 



Okay, go ahead and get the rest Hawaii. We will 



talk it over here. It looks like it 



S/C 



now. I have got my partner to copy the PLA update 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:11 PM CST, TAPE 128 



PAGE 2 

HOU Okay, what we want to do is start with section 1 

section 2 and then also do a normal purge on the 
H 2 this time. 

S/C Okay, want to start with the H 2 purge, section 1 and 

2 and then I will do the 0^ for 30 seconds. Is that 
okay? 

HAW Yes, that is roger. 

S/C Okay. 

HAW Okay, let me know when you are ready to copy. 

HAW Flight, it looks like he came around real good 

from here. 
HOU Roger. 

S/C Delta Plights hydrogen purge, section 1. 

HAW Roger, we copy. 

S/C Ready to copy. 

HAW Area 20 3 Alpha, 30 56 58, 20 plus kl 26 plus 09- 



Area 21 3 Alpha, 32 32 56, 20 plus 08 25 plus 35- 
Area 22 3 Bravo, 3^ 09 17, 19 plus 23 2k plus U5. 
Area 23 Alpha Charley 35 03 12, 20 plus 53, 27 plus 27- 
Area 2k Alpha Charley 36 38 31, 21 plus 07, 26 plus 26. 
Area 25 -2 Alpha 38 12 Ik, 21 plus 11, 26 plus kl. 
Area 26 Alpha Charley 39 ^8 37, 21 plus 07, 26 plus 33- 
And that will be roll left 80, roll right 100. Weather 
is good in all areas with the exception of 2k, which 
is marginal and it does include the SEP maneuver. Over. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:11 PM CST, TAPE 128 

PAGE 3 

S/c Roger, weather good except for 2k which is 

marginal. 
HAW Roger. 

HOU Hawaii, an Agena India please. 

HAW Wilco. 

HOU Hawaii Com, Flight. 

HAW Go Flight. 

HOU Have you got everything up that you had to get 

up to the crew? 

HAW That is affirm. 

HOU And how does the Agena look? 

HAW Agena looks fine. 

HOU Okay. SEF, TDA aft. 

HAW It is 0180. 

HOU Okay. And ittB/in. dedban&s. 

HAW That is affirm. 

Very little, well we are not showing any thruster 
activity right now. 

HOU Okay. Roger. We talked to them a little more 

over the State s, Keith. We think they ought to 
stay that way and do this 1+08 up over the Atlantic 
this pasB and after that experiment try gyro com- 
passing out these plus or minus 90 degrees and see 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:11 PM CST, TAPE 128 

PAGE k 

HOU how that works. 

HAW Okay, where do you want to do all that? 

HOU Just tell them to go ahead and do it after the 

experiment at their leisure. 
HAW Okay. And that was gyro compass to what? 

HOU Plus or minus 90 is what is worrying Buzz. 

So have him go ahead and do it again and see 

how it works. 

HAW Okay, 12 Hawaii. Flight recommends that you 

stay like you are and go ahead and do that 
MU08 experiment, once that has been completed, 
you can go ahead and try your plus or minus 
90 degree maneuver. 

S/C Roger. 

HAW Okay, it looks like we have got about a minute 

and a half. You going to have any of your 
crew status report information available? 

HOU Hawaii, Flight. 

S/C We are in the process of eating our last meal. 

We will give you a status report when we finish 
it. 

HAW Okay, and would you place your quantity read 

to the H„ position, please, for us? 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:11 PM CST, TAPE 128 



PAGE 5 

HAW Roger, thank you. 

HOU Hawaii Flight. 

HAW Go Flight. 

HOU You need to get an SP disable ground command 

kO, spacecraft 2l+0. 
HAW Okay, could you turn your encoder off for 

a brief moment and we will send SPC disable 

here. 

S/C Encoder off. 

HAW Okay, you can turn it back on. We have it. 

Looks like we have about 30 seconds to LOS. 
S/C Roger. 

HAW Okay, Hawaii has had LOS. 



And this/Mffsion Control Houston. We have had loss of signal 
at the Hawaii tracking station. During that pass, the, planned 
landing area block updates were passed to the crew. These are 
routine updates, retrofire times for a series of revolutions in 
the future hours of the flight for landing. Also a fuel cell 
purge was run during this pass and the crew reported that they 
were in the midst of having a meal. We are coming up on a 
very short duration State side pass, which will only touch 
the California and Guaymas, Mexico stations. We are scheduled 
to be acquired at the California station in approximately 1 minute 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:11 PM CST, TAPE 128 

PAGE 6 

from new. We will stand by until we have telemetry indications 
through California. California does have acquisition. We will 
stand by until Pete Conrad gives them a call through California. 
Let's join that conversation. 
HOU Gemini 12, Houston 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:21 p.m. TAPE 129 

PAGE 1 

HOU Gemini 12, Houston standing by California. 

HOU Gemini 12, Houston - over. 

HOU Gemini 12, Houston. 

S/C Houston, Gemini 12, go ahead. 

HOU Roger. We would like to have you spend about 

20 minutes on your ko8 and then if you would like 
to go ahead and do some more gyrocompassing to 
either South or North and wind up SEF, if you 
can let the CSQ know how you are doing, we have 
looked at all the data and as best as we can 
determine all the control systems in the Agena 
are working correctly. In FC-1 with all that 
fuel aboard it may take quite a while, and if 
you do have this excersion get off more than 
kO to 1*5 degrees, I just recommend you go 
ahead and resend all the commands again. We 
had that happen once or twice on our flight, 
and as I say, the best we can determine, it 
looks like it is running okay. 



S/C Roger. 

HOU You can give us a call through Tananarive or 

CSQ on how you make out with your yaw to the 
North or South headings. 

S/C Roger, we will proceed doing that after M-U08. 

HOU Roger, standing by. 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 7:21 p.m. TAPE 129 

PAGE 2 

HOU 12, Houston, when you get done go on back into 

FC-1 and go ahead and go back to your ACS gains 
low so that we conserve control gas. 

S/C Houston, 12. You are fading out. 

Guaymas remote, California local. 

GYM Guaymas remote. 

CAL Cal. local. 

HOU Roger, 12, this is Houston through Guaymas now. 

We were loosing you at California. I say again, 
When you get done with your test, make sure 
you go back to U60 ACS gains low so that you 
save your control gas. Did you copy 12. 

S/C Roger - Houston we will go back to k60. 

HOU Thank you. 12, Houston, would you pass how 

many S-29 pictures you took and how many S-6 
pictures please. 

S/C Standby. 

HOU You can pass it later. 

HOU 12, Houston. One minute to LOS - standing by. 

This is Mission Control Houston, apparently we have had loss 
of signal through the Guaymas station. We will be coming up 
on the tracking ship Rose Knot off the West Coast of South 
America at - in approximately eight minutes. We will come 
back up at that time to relay the air-to-ground conversation 
over that particular station. At 28 hours, hk minutes, 15 sec- 
onds after liftoff, this is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11/12/66, 7:38 p.m. TAPE 130 

PAGE 1 



This is Mission Control Houston, at 28 hours, 51 minutes and 
1+2 seconds after liftoff we should be now nearing contact with 
the Spacecraft Gemini 12 from the tracking ship Rose Knot. 
We are approximately 10 seconds away from acquisition according 
to the site acquisition table. We will listen in to the 
conversation between Spacecraft Communicator Bill Buchholz 
aboard the tracking ship Rose Knot and the crew of Gemini 12. 
Standing by for acquisition and telemetry. The spacecraft is 
GO on the ground is the report from tracking ship Rose Knot. 
Let's eavesdrop a little. 
S/C Roger - RKV 

RKV Okay, would like to have you -bump up your 0^. 

S/C Uh, Buzz would you bump up the 0^ a bit. 

RKV Turn your 0 g heater ON please. 

S/C Roger, okay - good enough. 

RKV We have nothing for you at this time 12, we will 

be standing by. 
S/C Roger - Roger, do you want these heaters put 

back on the H 2 during the remainder of the area. 
RKV Standby 12 

Do you want the heaters on - indicator ON for 

the remainder of the ... or just switch to it. 
HOU Yes, we want to go back to Hg. 

RKV Roger - have Buzz put cryo switch- in H,,. 

RKV 12, RKV - would you read me your cryo switch 

in H 2 please. 

He probably won't get to it South of here, but 
will teletype the way it is , we will give the 
information you want presently. 



GEMINI 12 MISSION COMMENTARY 11/12/66, 7:38 p.m. TAPE 130 



PAGE 2 

RKV Flight, RKV 

HOU Go ahead. 

RKV Okay, Mean time 1 with zero on lh.6. 

HOU Rog. 

RKV Stack one alpha k.7Q; stack one bravo k.kG; 

Mean Time 2 12.8. Stack two alpha 3-5^; 

stack two bravo U.32. 
HOU Okay, Main bus voltage. 

RKV Standby one. Brave .. 01. Reads 27-5- 

HOU Roger. Was that in the time when the heater 

was on. 

RKV It's right at this time. The heater is on 

HOU Okay. 

RKV Okay, it looks like his pressure is going back 

up to around 900 on the meters here. 

RKV 12, RKV - you are about one minute to LOS. Would 

you give me the condition of your heater switch 
at this time. 

S/C Roger - the heater went back to auto, I'll get 

a reading in a minute. 
RKV Roger . 

S/C We. are reading 70 . . . 

RKV Say again 

S/C Reading 70 on the 0^ pressure. 

RKV Roger, Roger. 



GEMINI 12 MISSION COMMENTARY , 11/12/66, 7:38 p.m. TAPE 130 

PAGE 3 

RKV RKV is LOS Gemini 

HOU RKV, Flight. 

RKV Roger, RKV. 

HOU Send us an Agena Main in a contingency India on the 

Agena. . 

RKV Main and an india 

HOU Rog. 

RKV RKV is LOS Agena. 

Both vehicles are GO at LOS. 
And this is Mission Control in Houston at 28 hours, 58 minutes, 
and 21 seconds after liftoff. We have loss of signal on both 
vehicles over the tracking ship Coastal Sentry. The next 
station from which we will acquire the two spacecrafts will 
be the Tananarive voice remoting station and that will be in 
approximately 20 minutes. We will come up again at that 
time with any possible conversation from Houston through the 
Tananarive station. This is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-12-66 8:05 pm CST Tape 131 

Page 1 



This is Mission Control Houston, we're at 29 hours 18 minutes and 
k3 seconds after liftoff. We should be acquiring the Tananarive 
voice remoting station. We'll be standing by for any conversation 
out of Mission Control here with the crew of Gemini XII. Tanana- 
rive does have acquisition signal. We are standing by for "Pete" 
Conrad to talk to the crew. Let's join the conversation now. 
HOU Tannanarive over. 

Gemini 12, Gemini 12 Houston through Tananarive. 

Over . 

S/C Go ahead Houston. 

HOU Roger, need a few things from you before you go 

to bed, please. Could I have a PQI reading? 

S/C Roger. PQI looks about h9 percent. 

HOU Roger, k 9 percent. I'd like your crew status 

report if possible. I have a node update for 
you and a couple of other questions when you are 
ready to copy. 

S/C Roger, Houston. Water gun reading 01236, we've 

got just about an equal amount of water. Finished 
fuel 8223, completed all three meals today. 

HOU Houston copy. 12 This is Houston. You can advise 

the pilot that Army won 6 to 3 over California 
today . 

S/C That's just getting us set for the big one. 

HOU Roger, I've got your node up date if you are ready 

to copy. 



GEMINI XII MISSION COMMENTARY 11-12-66 8:05 pm CST Tape 131 1 

Page 2 

S/C Ready to copy. 

HOU Roger, the time is 31:+ 03 + 39 node Rev 2 0 

59-1 east right ascension 11 hours, 13 minutes, 
over. 

S/C Roger, time 31 + 03 + 39, node rev 2 0, 59-1 east 

11 hours 13 minutes right ascension. 
HOU Roger. On the S29. Do you think that you got 

some pictures withou having hit the airglow? 

We want to know whether we should schedule another 

one tomorrow or not. 
S/C Say again. 

HOU Roger, I would like to know if you think that you've 

got a good S29 picture or not so we can decide whether 
to schedule another S29 for tomorrow. 

S/C Roger, that's with the airglow, that's the libration 

report ... 

HOU Roger, I know it's the libration but you said it 

went over the horizon and I want to know if you think 
you got a good picture of the libration point. Over. 

S/C Roger, it was in the second series of 30 second one 

minute, two minute shots that we lost the two minute 
one, because it was going into the horizon. 

HOU Houston, copied. Roger. Did you get that one 36 

shot? 

S/C Roger, we did. We weren't sure where you wanted us 



GEMINI XII MISSION COMMENTARY 11-12-66 8:05 pm CST Tape 131 3 

Page 3 

to get a picture. There were several interesting 
spots down there so we used the right angle. 

HOU Roger. And how is your Agena operating? 

S/C Well, it seems to be... 

HOU Say again. 

S/C ...We're going to ...around here to 

HOU Okay. You can... if everything is going alright 

ther's no... you do not have to contact the CSQ 
if you don't want to. You can go ahead and go to 
sleep. I talked to both of your wives and they say 
good show so far and good luck for tomorrow and 
we'll see ya'll in the morning. 

S/C Roger. Roger. 

HOU Houston standing by and Good Night. 

And this is Mission Control Houston. Apparently that will be the 
extent of the air to ground communications over this pass, via the 
Tananarive voice remoting station. Pete Conrads last comment was 
Good Night. So Good Night it is. The next station to acquire the 
spacecraft will be the tracking ship Coastal Sentry in approximately 
20 minutes. In all likelihood it will be just a ground readout of 
telemetry indications from the spacecraft and the Agena relayed back 
to Houston from the Cap Com aboard the Coastal Sentry, Bill Garvin . 
at 29 hours 25 minutes and ^3 seconds, this is Mission Control 
Houston . 

END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/12/66, 8:50 pm CSt, TAPE 132, PAGE 1 



This is Mission Control Houston at 30 hours 3 minutes and 3 seconds 
after liftoff. Gemini 12 and the Agena are now over the Hawaii 
tracking station where the spacecraft communicator just reported 
that both the vehicles were GO on the ground. Earlier in this 
revolution, the spacecraft crossed the tracking ship, Coastal Sentry, 
at approximately 29 hours k3 minutes GET, where it was reported 
the crew apparently were still awake and both spacecraft were 
GO on the ground from Coastal Sentry. Some -times for activities 
tomorrow, the crew is due to wake up at 5:20 am CST, and hatch 
open time for the umbilical EVA tomorrow morning will be at 
9:30 am CST. The members of the Blue Team of flight controllers 
are beginning to drift into Mission Control Center here to relieve 
the Black Team. At 30 hours k minutes and 8 seconds after liftoff 
this is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/12/66, 10:10 pm CST, TAPE 133, PAGE 1 



This is Gemini Control, 31 hours 23 minutes 33 seconds into the 
mission of Gemini 12. The spacecraft is in acquisition with 
Coastal Sentry ship. There is no voice contact as there was not 
expected to be during this pass, being in a sleep period. It's 
during the 20th revolution. The astronauts entered the sleep 
period 29 hours 30 minutes into the mission. They had three meals 
today. They will end their sleep period 38 hours hO minutes, for 
a total sleep period of 9 hours 10 minutes. The OAMS orbital attitude 
maneuvering system propellent quantity readout are ^9 percent, which 
is right on the money. That's what we expected the OAMS readout 
to be during the original flight plan. The heartrates are for Lovell 
72, for Aldrin 79. Respiration 12 for Lovell, 13 for A ldrin. Dr. 
Hawkins, the NASA surgeon on duty here at the MCC, indicates that 
he does not believe they are asleep as yet. To recap the mission 
so far, very briefly, for the first day, we did; have an accomplished 
rendezvous and docking, which was an aim of the mission. We 
accomplished the M-I4O8 or the Radiation experiment, measurement 
experiment. Today, we accomplished standup EVA and also the S-13 
experiment was accomplished, which is the star-field ultraviolet 
astronomical photography that astronaut Aldrin accomplished during 
the EVA. Also, during today, we have accomplished the S-29 experiment 
which is the Lunar Earth Libration Regions Photography, the S-ll 
experiment, which is the Air glow Horizon Photography, the S-5 experi- 
ment, Synoptic Terrain Photography and the S-6 experiment, Synoptic 



GEMINI XII MISSION COMMENTARY, 11/12/66, 10:10 pm CST, TAPE 133, PAGE 



Weather Photography. All in all, with the acception of the high 
apogee which we had originally scheduled but had to give up early 
in the mission, the mission appears to be progressing very satis- 
factorily. Right now the Blue Team is on duty with Gene Kranz 
acting as flight director. Astronaut Conrad is the only holdover 
from the Black Team. He seems to be stuck on duty here until 
around midnight as Cap Com. At 31 hours 26 minutes 37 seconds 
into the mission, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/12/66, 10:50 p.m. TAPE 13^ 

PAGE 1 

This is Gemini Control, 32 hours, 3 minutes, 30 seconds into 
the mission of Gemini 12. The position of the Gemini 12 
spacecraft at this time is approaching the West Coast of 
Africa. The Rose Knot tracking ship acquired approximately 
thee minutes ago. Correction - that is South America. Not 
Africa. One of those little mistakes that happen now and 
then here in the Control Center. We have had no voice con- 
tact with the astronauts because they are in a sleep period. 
The heart rates are as follows: Lovell 52 beats per minute, 
Aldrin U6. Respiration rate: Lovell Ih per minute, Aldrin 
12. The Surgeon says that indications are that the crew is 
sleeping soundly. That information was as of the Coastal 
station tracking ship. Onboard propellant quantities in the 
Ohms system are right on the money at 32 hours, k minutes, 
32 seconds into the mission. This is Gemini Control. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/12/66, 11:50 pm CST, TAPE 135, PAGE 1 



This is Gemini Control 33 hours 3 minutes 30 seconds into the 
mission of Gemini 12. The position of the Gemini 12 spacecraft 
is now approaching Canton Island, Canton should acquire at 33 hours 
11 minutes 58 seconds into the flight. The spacecraft is now on 
it's 22nd revolution. We have had no voice contact since the sleep 
period began at 29 hours 30 minutes into the mission. They have 
been in the sleep period therefore for 3 hours 35 minutes. The 
weather in the prime West Atlantic landing area. The forecast 
for tomorrow, 7 to 9 foot swells, 5 to 6 foot waves, cloud covered 
2,000 scattered to broken, wind 20 to 25 knots from the north. We 
anticipate the weather in the prime landing area to clear for 
Monday and Tuesday, the end of the mission. The other areas that - 
the east Atlantic, the West Pacific and the Mid- Pacific areas are 
forecast to be good through the mission. At 33 hours k minutes 
k-7 seconds into the mission, this is Gemini Control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/12/66, 12:50 am CST, TAPE 136,' ; PAGE 1 

This is Gemini Control, 3U hours 3 minutes 31 seconds into the 
flight of Gemini 12. The position of the spacecraft is over 
Africa. Kano acquired the spacecraft some 3 minutes ago. The 
astronauts entered their sleep period 29 hours 30 minutes into 
the miBsion so they have been in their sleep period now for four 
hours 35 minutes. We've had again no voice contact with the crew, 
none was planned. From RKV, from the Rose Knot tracking ship, we 
have the heartrate on astronaut Lovell, h8 per minute, on Aldrin 
hk per minute.. Respiration rate, Lovell Ik per minute, Aldrin 
12 per minute. The surgeon indicates their really sawing them off 
up there. Apogee of the spacecraft is now 162.1 nautical miles, 
perigee 139*6 nautical miles. Bill Anders has replaced Pete Conrad 
in the MCC as the Cap Com, as of now the tracking station telemetry 
readings indicate onboard systems on Gemini and Agena look good. 
This is Gemini Control at 3 1 * hours k minutes kk seconds into the 
mission. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/13/66, 1:50 am CST, TAPE 137, PAGE 1 



This is Gemini Control, 35 hours 3 minutes 33 seconds into the 
mission of Gemini 12. The position is approximately approaching 
the west coast of South America. The Rose Knot tracking ship 
should acquire the spacecraft by telemetry 35 hours 11 minutes 
Ul seconds, or some 6| minutes from now. There is still no voice 
contact with the astronauts. Their sleep period now is extended 
to 5 hours and 35 minutes since they went into the sleep period. 
They are sleeping soundly. Flight director, Gene Kranz, and the 
flight controllers are currently reviewing the schedule of 
tomorrows activities. At 35 hours k minutes 19 seconds into the 
mission of Gemini 12, this is Gemini control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/13/66, 2:50 am CST, TAPE 138, PAGE 1 



This is Gemini Control, 36 hours, 3 minutes 31 seconds into the 
mission of Gemini 12. The Gemini 12 spacecraft is approaching 
the east coast of China at this time. The Coastal Sentry ship 
should acquire the spacecraft some ho seconds past the minute of 
about 9 seconds ago. There again will be no voice contact on this 
just telemetry. The sleep period now stands at 6 hours 35 minutes. 
There is some 2 hours 35 minutes to go before they are awakened. 
The last data from Rose Knot tracking ship indicates the heartrate 
of astronaut Lovell at ^3 beats per minute, astronaut Aldrin at 
k2 beat per minute. Respiration rates are: Lovell 12 per minute, 
Aldrin 10. Our surgeon indicates that they are indeed still 
sleeping in a good deep sleep. At 36 hours, k minutes, 32 seconds 
into the mission of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:21 AM CST 

TAPE 139, PAGE 1 
This is Gemini Control, 36 hours, 50 minutes, four seconds 
into the mission of Gemini 12. We have come up in the last 
comparatively few minutes with a possible problem on one of 
our fuel cell. stacks. The flight director, Gene Kranz, has 
directed that the crew be awakened. The spacecraft is in 
acquisition by the RKV — the Rose Knot tracking ship, and 
we will now bring you the conversation with the astronauts. 



S/C 

RKV Yes, we'd like to have open circuit voltage 

check on Two Bravo. 
S/C OK. That's with the stack turned on, right. 

RKV That's affirm. 

S/C Roger. Open circuit voltage is 29.7- 

RKV Open 9*7. 

S/C Yes, it's still going up. It's about 30 volts 

HOU FLT Hey, Bill, make sure he did that in the warm u} 

position. 

RKV 12, did you do that in a warm up position. 

S/C Negative. 

RKV Could you give it to us in a warm up position, 

please. Flight, RKV. Did you want him to 
turn the section to warm up or is it just 
Two Bravo off? 



GEMINI 12 MISSION COMMENTARY, II/13/66, 3:21 AM CST 



TAPE 139 j PAGE 2 
HOU FLT Stand by. Section Two to warm up. 

RKV Roger. 
S/C I have 30.7- 

RKV 30.7 with Section Two in warm up. 

S/C Roger. Section Two's in warm up. 

RKV Roger. Understand. Did you copy, Flight? 

HOU FLT OK. Let's do an 02 purge. 

RKV Roger, Flight. OK. Gemini 12, RKV. Would 

you do an 02 purge on Section Two. 02 only. 
S/C Roger. You want the section on. for that, 

right? 

RKV through a normal purge. 

HOU FLT The section should be on for that. He's 

correct . 

RKV Roger. That's your static section off. 

HOU FLT Section on. 

RKV That's section on, Gimini 12. Tape dump's 

complete . 

S/C Alright, just hold up. Will you say again. 

I thought you said normal purge and then 02 
only. 

RKV That's affirmative, 12. 

S/C OK. Two minutes of 02 purge. 



GEMINI 12 MISSION COMMENTARY, H/13/66, 3:21 AM CST 



TAPE 139, pact; 3 
RKV Flight, I don't believe we're going to get 

the complete purge before our LOS here. 
HOU FLT Ok, Bill. 

RKV Or we can .... real time off, if .... 

HOU FLT Why don't you leave real time on. 

RKV OK. Just let it on — let him go by with it 

on. 

HOU FLT That's affirmative. We'll tell Canary. 

RKV OK. I don't think Canary picks them up this 

time, do they. 
HOU FLT Yes, they do. 

RKV Alright. 

HOU FLT Give us an LOS summary, Bill. Both vehicles. 

RKV Roger. 

HOU FLT Say again, Rod. How's the structure current 

looking? 

RKV It's steady at 2,2k. 

HOU FLT Roger. 

RKV Gemini 12, you're just less than one minute to 

our LOS. 
S/ C Roger . 

RKV Canary Islands will pick you up here in a little 

while, so they'll finish it all up — finish it 
up with you. 



GEMINI 12 MISSION COMMENTARY, II/13/66, 3:21 AM CST 

TAPE 139, PAGE h 
S/C Roger. 02 purge complete on Section Two. 

RKV Roger. Understand. Purge is complete, 

Flight. 

HOU FLT Roger. Thank you. 

RKV So I can go back on with Section Two? 

HOU FLT Roger. Let's go back on with Section Two. 

RKV Roger. Gemini 12, will you go back on on 

Section Two now. Well, we have LOS, Flight, 
I don't know if he got my last transmission. 

HOU FLT Roger. 

RKV We completed the tape dump here. Do you want 

us to play it back? — for any information. 
HOU FLT That ' s affirmative . I want to know .... 



This is Gemini Control. You heard that conversation. We're 
taking a close look at a fuel cell stack that possibly has gone 
very low or possibly is inoperable. We are estimating the next 
contact either at Ascension or at Canary Islands. Ascension will 
acquire at 37 hours, four minutes, ^9 seconds into the mission. 
Canary Islands will acquire at 37:08:U0 into the mission. We will 
continue to keep you advised and stand by until the next station 
contact. This is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:50 a.m. CST Tape lUo 

Page 1 



This is Gemini Control 37 hours, k minutes, 2 seconds into the 
mission of Gemini 12. As you know, as we reported, we have awakened 
the crew at the Rose Knot tracking ship. We had some conversation. 
There is a possibility of one fuel cell stack in the spacecraft being 
low in amperage. The complete Gemini fuel cell system, of course, 
has three stacks -- two, three-stack sections so there are six stacks 
in the spacecraft; however, Gene Kranz, the Flight Director thought 
it advisable to wake the crew, check this situation out. Ascension 
should have contact with the spacecraft 37 hours, k minutes, U9 
seconds into the mission, which is right about now. We will stand 
by for any astronaut conversation. 

This is Gemini Control. 37 hours, 6 minutes into the mission 
of Gemini 12. It is possible we will not have contact from Ascension 
on this pass; however, Canary Islands has been instructed to talk 
to the crew of Gemini 12. They will acquire 37 minutes -- correction, 
37 hours, 8 minutes, 40 seconds into the mission, which is some 
two minutes from now. We will stand by and come up about 15 seconds 
before that time to hear that conversation. This is Gemini Control. 

This is Gemini Control. 37 hours, 8 minutes, 17 seconds into 
the mission. We have just been advised by Canary Islands that they 
have contact with the spacecraft. They will be talking to the crew 
now. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:50 a.m. CST Tape ikO 

Page 2 



CRO Flight, Canarys. 

HOU Go ahead, Canary. 

CRO Stack 2-B is reading 1.08. 

HOU Okay. We're going to leave it as is for the time 

being. 

CRO Roger . 

Gemini 12, Canary Cap. Com. 
S/C This is 12, go ahead. 

CRO Okay. How did the purge go? 

S/C Purge okay. 

CRO Okay. Could you turn your encoder off? The reset 

timer timed out over the night and I would like to 

reset a few functions in the Agena. 
S/C Roger. Encoder is off. That purge was just section 

2 0 2 only. 
CRO That's affirmative. 

Okay, 12, we've got the Agena resets. You can 

turn your encoder back on. 

Flight, Canary. 
HOU Standby, Canary. 

Canary Cap Com, Houston Flight. 
CRO Okay. We've got the Agena reset, the encoder is 

back on. 

HOU Okay. You could ask him a position of the autometer 

After 

switches. / he gives the positions, you can have 
him turn them both to off. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:50 a.m. CST Tape ikO 

Page 3 



CRO Roger, copy. 

12, Canarys. 
S/C Go ahead. 

CRO Okay. What's the positions of your spectrometer 

switches at this time? 
S/C They are off. 

CRO They are off? 

S/C Affirm. 

CRO Okay. I've got a PLA update if you are ready to 

copy. 

S/c Ready to copy and do you want a G0/N0G0? 

CRO Roger. You had a chance to test the batteries? 

S/C Roger. We'll do that after the PLA update. 

CRO Okay. They'll catch you with a flight plan 

update over Kano. Okay, PLA update. Area 27 - 

1 Charlie, hi 16 36. 21 + 12. 26 + kl. 

Area - 28 - 1 Bravo, k2 49 59* 21 + 07, 26 + 31. 

HOU Slow down a bit, Bill. 

CRO Area 29-1 Abel, kk 25 53, 20 + kg, 26 + 06, 

Area 30-1 Abel. k6 01 50, 26 + 16, 25 + 3 1 *, 
Area 31 - h Abel. 48 50 30, 21 + 06, 26 + 37. 
Area 32 - k Bravo. 50 + 26 + 21, 20+45, 
26 + 10. 

HOU Slow down. 

CRO Back angle is a roll left 80, roll right 90, 

roll left 80, roll right 100. Weather in all 
areas is good. And you need a set maneuver 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:50 a.m. CST Tape lUo 

Page h 



for all areas. We're just about at LOS. We'll 
pick you up at Kano. 
HOU Kano go remote. 

S/C Do we have enough time to give me that area 

before the last one ...(garbled). 
KNO Kano remote and we have acquisition. 

CRO Okay, it was 31 - h Abel. U8 50 30. 

HOU Gemini 12, Houston Cap Com, through Kano. 

S/C Good morning there, Houston, 12 here. 

HOU Good morning, Jim. We are interested to know 



whether you guys would like to take a nap for 
another rev or would you like to eat early and 
do some S-5 and S-6. Our recommendation would 
be to sleep, but that's up to you. 
Do you copy? 

S/C Roger. We slept like a couple of logs last 

night. We're just about slept out. 
HOU Okay. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 4:00 a.m. CST Tape ikl 

Page 1 



S/c ...we're, just about slept out. 

HOU Okay. I'd like to give you a correction to the 

PLA's we've given you so far. On 30 - 1 Alpha, 

RET 1+00 K should read 20 + 16. 
S/C Roger. Understand. I thought it would be kind 

of hard to get to rollback before you got to 

400K. 

HOU Rog. Okay, let me give you a flight plan update 

here real quick and we can get these other PLA's 
if necessary here later on. You ready to copy? 

S/C Roger, standby one. 

HOU Okay, well if you've got your PLA out, I'll give 

you whatever you like. 
S/C Ready for the flight plan update. 

HOU Okay. To get your flight plan in kilter, essentially 

you add 10 minutes to the nominal times. We'd 
like for you to start an eat period now, and at 
38:35 do an S-6 sequence A — correction, sequence 
8 north of track. 38:1*0, at CYI, we'll give you 
a Go/NoGo for 45-1 Alpha. 38:55 - S-5, mode 
Alpha, sequence Ok. At 40:30 power up platform 
and gyro compass to 0 - 900, that is 0 90 0 on 
the Agena. At 4l:17, sunrise, platform defree, 
Agena inert ial. 42:47:28, EVA sunrise. Okay, 



GEMINI 12 MISSION COMMENTARY, 11/13/66, U:00 a.m. CST Tape iKl, 

Page 2 



that's the end of the flight plan update. I'd 
like a note here before we loose you if stack 
B — stack 2B current goes below 1 amp, turn 
stack 2B off and monitor open circuit voltage 
until the next site.. And you are holding at 
1 amp right now on ground TM. 

S/C Rog. We're showing about zero on it now. 

HOU You are showing zero? 

S/C Roger. 

HOU Okay, let's turn it off. Be advised your flight 

plan is also one rev off. So add one rev and 
10 minutes. 

S/C Roger, Bill* What was that EVA sunrise time 

again? 

HOU 1+2:U7:28. We've got 30 seconds to LOS. We'll 

give you the FLA updates at Carnarvon. Could 
you give me an open circuit voltage real quick. 
On stack 2. Section 2. 

S/C Three zero. 

HOU Understand 30. 

This is Gemini Control, 37 hours, 18 minutes, 52 seconds 
into the mission of Gemini 12. You heard that conversation 
between Astronaut Anders and the crew of Gemini 12. He was 
remoting through Kano, Nigeria. station. He gave the crew a 



GEMINI 12 MISSION COMMENTARY, 11/13/66, U:00 a.m. CST Tape lUl 

Page 3 



flight plan update. ,^To repeat it briefly, 37 hours, 15 minutes 
into the flight, eat period. 38:35, an S-6 experiment, 38: UO, 
Canary Islands Go/NoGo for rev *+5-l. 38 hours, 55 minutes, 
an S-5 experiment. Uo hours, 30 minutes, power up the platform, 
hi hours, 17 minutes, sunrise, h2 hours, U7 minutes, 28 seconds, 
EVA sunrise. You also heard him advise the crew to add one 
revolution plus 10 minutes to bring them up to the planned 
flight plan. Also, the Gemini 12 crew was advised to shutdown 
the fuel cell stack B, which is now inoperative. This does not 
indicate a critical situation. We have five stacks left. At 
37 hours, 20 minutes, 21 seconds into the mission of Gemini 12, 
this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 4:22 AM CST 

TAPE lk2, PAGE 1 
This is Gemini Control, 37 hours, kO minutes, 12 seconds into 
the flight of Gemini 12. Coastal Sentry now has acquisition 
of the spacecraft. Gene Kranz, the flight director, is passing 
instructions on to Coastal Sentry to pass on up to the 
spacecraft concerning this fuel cell situation. The short 
recap is the fuel cell stack B, of which we have five stacks, 
so only one stack appears at least to be inoperable. We will 
continue to check this out; if it is possible, we will put 
it back on the line. We will now stand by for Coastal Sentry 
contact with the Gemini 12 crew. 



CSQ Roger. 

HOU FLT OK, Bill, we'll stand by for your pass. 

CSQ OK. 
HOU FLT OK? 

CSQ seconds to go, Flight. 

HOU FLT Roger. 

CSQ Gemini 12, CSQ. 

S/C Go ahead, CSQ. 

CSQ Roger. We'd like to run a little test on the 

fuel cell. What we'd like you to do is to 
observe two or three out of each stack current 
and give us enough time here to get a ground 
correlation read out so would you give us a 



GEMINI 12 MISSION COMMENTARY, 11/13/66, k:22 AM CST 

TAPE lk2, PAC2I 2 
read out on Stack 1 and Alpha. 
S/C Roger. One Alpha reads 3 ... 

CS Q Stacklffko . Alpha . 

S/C Two Alpha is 2.3 M. 

CSQ Three Alpha. 

S/C We only have two seconds 

CSQ Stand by one. One Apollo. 

S/C One Apollo is 3...PIM 

CSQ Two Apollo. 

S/C Two Apollo is 0, zero. 

CSQ Okay, we'd like you to now to measure the 

.... circuit voltage on two Apollo. 

S/C Roger, the open circuit voltage is zero. 

CSQ All still low on two Apollo. 

HOU Okay, Bill, leave it off. 

CSQ Okay. I have a new update for you. 

time is 38:32:53, roll of 25, 55-9 left, 

right Ascension, 1104. One minute to LOS. 
I'll transmit you a TX. 

S/C Roger 38:32:53, gravity 25, 55-9 left, 

right Ascension, HOk. 

CSQ Roger, roger. 

HOU Bill, do you have any Delta P lights up there? 

CSQ That's negative. 

HOU Negative, no Delta P lights? 

CSQ No Delta P lights. 

HOU Roger, thank you. 



GEMINI 12 MISSION COMMENTARY, II/13/66, k:22 A. M. CST 

Tape 1^2, Page 3 



us 

HOU CSQ, AFD. Would you give/ an LOS main on 

Agena? 

CSQ Okay. 

This is Gemini Control, 37 hours, h6 minutes, k-2 seconds 
into the flight of Gemini 12. We have had LOS from Coastal 
Sentry. The next contact will be some kO minutes from now 
with the Rose Knot tracking ship, off the west coast of Africa. 
A short recap in revolution 2h, it was found that fuel cell 
stack B was slightly - quite a bit - low in amperage, .98 to 
1.08 amps. At that time it was decided to awaken the crew 
over the Rose Knot Victor and this was done. They have had 
about five and a half hours sleep. In other words, they were 
awakened something around one and a half hours early. It was 
decided to instruct them to shut down fuel cell stack B. The 
open circuit voltage appeared to be good but it won't pick up 
any load. This still leaves us with five stacks. They also 
had a flight plan update which includes the time for EVA, so 
everything other than the loss of that fuel cell stack appears 
to be normal. If that fuel cell stack can be, it will be brought 
back on the line after further checks along the flight path. At 
37 hours, hQ minutes, 10 seconds into the mission of Gemini 12, 
this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:OU a.m. CST Tape 1^3 

Page 1 



Gemini Control Houston 38 hours, 17 minutes into the flight 
of Gemini 12. The Gemini 12 spacecraft with Astronauts Jim 
Lovell and Buzz Aldrin is currently passing over the south 
Pacific and approaching the RKV ship off the western coast 
of South America. The crew was awakened during the last pass 
over the RKV and they are currently in an eat period. Meanwhile, 
in Mission Control Houston, we are in the process of a change 
of Flight Controller teams. At the present time, Cliff Charlesworth 
Flight Director of the Green Team is talking things over with 
Gene Kranz, who has been here most of the evening. Over the RKV, 
we might expect some further verification of our fuel cell 
status. At the present time, stack 2B, that is 2 Bravo, has been 
shut down. The fuel cell has two sections; this would represent 
one-sixth of. those two sections, comparable to what we had on 
Gemini 11. We showed low amperage and therefore, shut down the 
fuel cell stack 2 Bravo. This, again, is a situation similar 
to 11 where the other fuel cell stacks picked up the power and 
carried on from there. At 38 hours, 19 minutes into the flight 
of Gemini 12, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:09 a.m. CST Tape lkk 

Page 1 

Gemini Control Houston, 38 hours, 22 minutes now into the 
flight of Gemini 12. Jim Lovell and Buzz Aldrin are approaching 
the outer ring of acquisition with the Rose Knot Victor. The 
Rose Knot Victor Cap Com will probably advise the crew that he 
is standing by, and will monitor systems during this pass. We 
expect little or no conversation during the pass, however. 
Standing by at 38 hours, 22 minutes, this is Gemini Control Houston. 

RKV ...is on. 

HDU Thank you. 

RKV The Delta P lights are out. 

HOT Very good. 

RKV The Agena vehicle is go. 



The Gemini vehicle is go. 



Gemini 12, RKV. 



S/C 



Go ahead, RKV. 



RKV 



Okay, we show you go on the ground here. We have 



nothing further for you. We'll be standing by. 



S/C 



Roger, we're coming up on an S-6. 



RKV 



Roger. 



Gemini Control Houston. We continue to monitor the pass over 
the Rose Knot Victor. Again, as we stated earlier, we expect little 
or no conversation during the pass, but we are standing by. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:09 a.m. CST Tape ikk 

Page 2 



RKV Flight, RKV. 

HOU Go ahead, RKV. 

RKV The . . . current is still varying between 3 and 

k PCM counts on the Agena. 
HOU Roger, everything looks good! here. We have 

your first summary. 
RKV Roger. 



have been 

Gemini Control Houston. The voice you/hearing talking to 
the RKV, of course, is that of Flight Director Gene Kranz. Mr. 
Kranz has been in the control center most of the evening, and 
continues to remain here for a while as the Green shift comes 
aboard. 



RKV Flight, RKV. 

HOU Go ahead, RKV. 

RKV Are you reading me loud and clear? 

HOU Affirmative. 

RKV Okay, we'll get into the flight plan here on 

Hotel Charlie 06, RCS-B source temperature 
reading 51.2 degrees. And Hotel Charlie 02 
RCS-Bravo source pressure reading 2870 psi. 

HOU Okay. GMC is watching that. He says that's 

okay. 

RKV Okay. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:09 a.m. CST Tape ikk 

Page 3 



RKV Flight, 1, 2, 3. 

HOU I'm reading you, Bill. 

RKV Flight, it seems that when I key my mike here, 

we come out getting some fluctuation with Agena 
TM when I'm talking to you. 

HOU I'd say you've got a local site problem. 

RKV We'll check around here. 

RKV 12, RKV. You are just about to our LOS. 

S/C Roger. 

HOU Let's have an LOS Gemini main, please, Bill. 

RKV Roger. 

We have LOS Gemini. 
HOU Roger. 



Gemini Control Houston, 38 hours, 29 minutes into the 
mission. We've just had loss of signal with the Rose Knot Victor. 
The next activity, which will involve the crew,, is some S-6 
photography. This is scheduled to take place in about 10 minutes. 
They will be shooting sequence 8 pictures; the S-6 photography 
is synoptic weather, and sequence 8 indicates that they'll be 
seeking Cirrus bands eminating from a tropical convergence zone. 
Meanwhile, in Mission Control Houston, the flight controllers 
in the operations control room on the third floor are quietly 
going over their flight plans in preparation for a very busy 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:09 a.m. CST Tape ikk 

Page k 

morning, a movning which will involve the umbilical EVA on the 
part of Buzz Aldrin. And on the first floor of this windowless 
building, its business as usual for the real time computer 
complex. Its 709^ computers axe up and humming in support of 
the Gemini 12 mission, and business as usual to them means 
kO billion calculations per day, for a day like today, and 
certainly this will be the busiest computer complex in the 
world this morning. The next station to acquire Gemini 12, 
will be the Canary Islands and this is scheduled to take place 
in 38 hours, hi minutes, 13 seconds into the mission. That 
is some 10 minutes from now. Standing by and continuing to 
monitor, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, U/13/66, 5:27 A. M. CST 

Tape 1^5, Page 1 

Gemini Control Houston, 38 hour6, hi minutes into the 
flight of Gemini 12 at this time. The Gemini 12 spacecraft 
is currently in an orbit of 161.9 nautical and 139-6 nautical 
and we have just been acquired by Canary and we'll stand by for 
conversation during this pass. 



S/C Roger, -same one. 

CYI Okay, we'd like to get a nominal fuel cell 

purge, section 2 then section 1. 

S/C Understand nominal fuel cell purge, section 2 

then 1. 

CYI Roger, we're standing by for it. 

Gemini Control Houston. As you just heard, Canary advised 
the Gemini 12 crew that they have a go for k5 dash 1 and they're 
to accomplish normal fuel cell purge, first section 2 then 1. 
CYI 12, Canary, sending you a TX. 

S/C Roger. 

CYI And could we have a PQI, please? 

S/C Roger, we're using about, oh, between h& and 

k$ percent. 
CYI Roger, thank you. 

CYI Flight, Canary. 

HOU Go ahead. 

CYI How about a crew status report? 

HOU Stand by. I don't see it scheduled. Hold on. 

HOU , Canary from Flight. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:27 A. M. CST 

Tape ll+5, Page 2 



CYI Go ahead. 

HOU We're scheduled for that over ETR next pass. 

CYI Okay. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. 

HOU See any Delta P lights? 

CYI Negative, Delta P lights. 

HOU Canary from Flight. 

CYI Go ahead. 

HOU Agena India. 

CYI .<,... Omega, roger . 

HOU Agena India. 

CYI Roger. 

(PAUSE) 

Gemini Control Houston, continuing to monitor our pass over 
Canary. Standing by. 
CYI Flight, Canary. 

HOU Go ahead, Canaries. 

CYI Okay, we've completed the tape dump and he's 

on section 102 purge at this time. 
HOU Roger. 

CYI Gemini 12, Canary. Would you move your cryo 

quantity switch to the 0^ position, please? 
Thank you. Okay, Gemini 12, would you ... 
your tank at this time and move the switch 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:27 A. M. CST 

Tape ]A5, Page 3 



to the vent position and then to safe? 
S/C Roger. 

CYI Did you get the vent pull? 

S/C Roger, we heard the reaction back there in 

the ... 

CYI Okay, and put your cryo quantity switch to 

off, and your Hg heater switch to auto. 
S/C Roger. 

CYI And we got about 30 seconds to LOS and we'll 

be standing by. 
S/C Roger. 

HOU Kano go remote, Canary local. 

KNO Kano's remote and we have acquisition. 

HOU Gemini 12, Houston Cap Com through Kano, over. 

S/C Roger. 

HOU Jim, will you move your cryo quantity switch 

to Hg, please? 
S/C garbled 

HOU Gemini 12, Houston Cap Com. I'm not copying. 

Did you read leave your cryo quantity switch 
in Hg? 

S/C We are back in Hg. 

HOU Mighty fine. 

KNO 30 seconds to Kano AOS - correction LOS. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:27 A. M. CST 

Tape 1^5, Page k 



KNO Kano has LOS. 

Gemini Control Houston, 38 hours, 52 minutes into the flight 
of Gemini 12. We've had LOS over Kano. The voice you heard from 
Houston remoting through Kano was that of Cap Com Bill Anders. 
And at 38 hours, 55 minutes into the mission, that's some two 
minutes from now, the crew is scheduled to take some S-5 Photog- 
raphy. This will be Synoptic Terrain Photography and they will 
be shooting for an African Rift Valley. At 38 hours, 53 minutes 
into the mission now this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/13/66, 6:l6 a.m. CST Tape lU6 

Page 1 



This is Gemini Control Houston, 39 hours, 30 minutes into 
the flight of Gemini 12 at this time. In Mission Control, the 
Green team Flight Director, Cliff Charlesworth , has gone around 
the room and discussed with his flight control team, the various 
aspects of the upcoming umbilical EVA mission. It all looks 
good at this time. The surgeon rstefcteratsd; that sleep on the 
part of the Gemini 12 crew was something less than 6 hours. 
Jim Lovell had indicated that he had "all slept out". The 
Gemini 12 crew, Jim Lovell and Buzz Aldrin, are now in their 
25th revolution. We've got a long dry spell between passes 
as they cross the south Pacific. The next station that will 
acquire will be Antigua. This will be at ho hours, h minutes 
into the mission. In the meantime, to bring you up-to-date 
on some of the activities that happened yesterday, the tele- 
scoping handrail which Buzz Aldrin put out yesterday during 
his standup EVA is in place for today's activity to provide 
him with ready transportation to the nose of the Agena for 
tether attachment. This handrail, by the way, is in three 
two-foot sections. It has got an 8 inch segment which was 
spring -loaded. It was stowed right inside Aldrin' s hatch so 
he could readily reach it as he started his standup EVA. And 
it is presently mounted on the half -beam between the two hatches . 
This is one the spacecraft side, and the other end is plugged 
into a hole on the docking cone of the Agena. Also, yesterday, 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:16 a.m. CST Tape 1U6*. 

Page 2 



Aldrin mounted the 16 mm EVA camera on the center line between — 
behind the two hatches. That is where it will be positioned today. 
He did this for a couple of reasons. One, this will provide him 
with a basis of comparison between performing this task with a 
chest pack on, that is the ELSS on, and without the chest pack. 
Yesterday, of course, he did not wear the chest pack. Also, this 
will give him a basis to evaluate some modifications that had been 
made to the mounting on the camera. The camera mounting O-ring 
was somewhat swollen during Gemini 11 and had given Dick Gordon a 
problem or two in his mounting exercise at the start of the Gemini 11 
umbilical EVA. Following yesterday's activity, Aldrin did take the 
camera back in and he will remount it today as part of his tasks. 
The crew will begin their EVA preparations in about seven minutes 
from now. This will be during a quiet period and we will have no 
conversation with them until Antigua. At 39 hours, 33 minutes, this 
is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:50 A. M. CST 

Tape lVT, Page 1 

Gemini Control Houston, hO hours, four minutes into the 
flight of Gemini 12 at this time. Jim Lovell and Buzz Aldrin 
are approaching acquisition with Antigua tracking station. 
We expect some conversation during this pass between Cap Com 
Bill Anders and the Gemini 12 crew. We'll stand by for acqui- 
sition which is expected at any moment. Standing by now for 
acquisition this is Gemini Control Houston. 
ANT AOS Antigua. 

HOU Gemini 12, Houston Cap Com, over. 

S/C Hello, Houston. 12 here. 

HOU Roger. That was a pretty lonely pass there, 



wasn't it? 



S/C 



Yes, it was. Something interesting happened 



(broke off) 



HOU 



We didn't copy Gemini 12, say again. 



How's that for a cliff hanger? 



(PAUSE) 



HOU 



Gemini 12, Houston Cap Com, over. 



S/C 



Go ahead, Houston. 



HOU 



You were cut out after you saw something 



interesting. What did you see? 



S/C 



We didn't see anything. I said that during 



our S-5 attempt to photograph on photo sequence h 



we attempted to get spacecraft control and it 



appears after an analysis of our control system, 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:50 A. M. CST 

Tape lk7, Page 2 



that thrusters 2 and k are not operating. 
HOU Roger, copy. 

HOU Gemini 12, Houston. We'd like to have you 

start a gradual power up by turning on the 
A pump in both the primary and secondary loops. 
We'd like to have you leave this on for at least 
a rev. We'll give you more items over Canary and 
then we'd like to have you follow your normal EVA 
prep in flight plan power up. Over. 

S/c Roger. Understand that you want us to put on 

primary A and have both primary B and primary A 
on at this time. Is that correct? 

HOU Negative. Only primary A in each loop. 

S/C Roger. Only primary A in each loop going on 

at this time. 

HOU Also we'd like to have you do a 30 second 0^ 

purge in section 2. We'd like to have you start 
one now and we want you to do one each rev. We'll 
advise you when to do them on the following rev. 
Do you copy? 

S/C ' Roger. 30 second purge in section 2 coming on 

at this time. 

HOU Okay, and we're ready for a crew status report. 

S/C Roger, water gun count of I36I. Water consumed 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:50 A. M. CST 

Tape 1U7, Page 3 



about equal and both eaten meal 3 on day 3 
meal . . 

HOU Roger, make that a 30 second purge for both 

sections . 

S/C Roger. 30 second purge for both sections. 

HOU Roger. Now we'd like to have each one of you 

try drinking about a pint of water each now and 
we'll be asking you to drink more as late in the 
EVA prep as possible, over. 

S/C - Roger, is this the fuel cell? 

HOU Roger. 

HOU Also we'd like to have you turn your encoder 

off now so we can reset your timer. 
S/C Encoder off. 

HOU Okay, and a note to in order to conserve 

attitude gas in the Agena, we'd like you to 
make sure that before you send ACS on, that 
you kill all your rates. 

S/C Roger. You read about our thrusters 2 and k, 

did you? 

HOU That's affirmative. We're thinking it over. 

S/C Fuell cell purge is complete. You say you want 

me to really load up on the water, huh? 
HOU That's affirmative. 

S/C How come I didn't get any of this on the ground 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6: 50 A. M. CST 

Tape 1^7, Page k 



debriefing - ground briefing? I was asking 

these questions before. 
HOU We'll give you a briefing when you get back. 

S/C I guess they will. 

HOU Okay, you can turn your encoder back on again. 

And can you give us an evaluation of your 
sleep period. 

S/C Roger, sleep period was very good. 

HOU Mighty fine. 

S/C It must be at least six hours apiece. 

HOU Copy. 

HOU Gemini 12, Houston. Where is your roll logic 

at this time? 

S/C Roger. Roll logic primary. Okay, you mean 

your roll jets? They're in yaw. 
HOU Roger, understand. 

S/c Roger, we've had them both in yaw and pitch. 

We had them in pitch after initial rendezvous 
trouble a day or so ago and then we brought 
them back to yaw. 

HOU Copy. 

S/C They may have been out for awhile. At least 

they might have been intermittent. These problems 
sound a little familiar with some of the things we 
had 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 6:50 A. M. CST 



Tape lh7, Page 5 



HOU 



Roger, understand. 



HOU 



Gemini 12, Houston. You have about one minute 



to LOS. 



s/c 



Roger . 



ANT 



LOS Antigua. 



HOU 



Flight. 



ANT 



Go ahead, Flight. 



HOU 



You get everything you need now? 



This is Gemini Control Houston. We've just had loss of 
signal at Antigua. The two thrusters referenced in Command 
Pilot's Jim Lovell conversation - these are CAMS thrusters, 2 and 
k, CAMS Orbital Attitude Maneuvering System. He indicated that 
these thrusters apparently are out at this time or he had an 
indication that they are out at this time. These thrusters are 
used for pitch down and yaw left functions; however, we should 
point out that what this really does, it reduces our control 
authority by half. It does not eliminate control authority. At 
hO hours, 15 minutes this is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/13/66, 7:05 a.m. CST Tape lk& 

Page 1 



Gemini Control Houston. We've just been acquired by Canary 
and we will pick up that conversation now. 

S/C . . .gyre . . . 

CYI Your TM switch to real time and acq 8. 

S/C TM is real time and acq. 

CYI And your cryo read switch to the 0 2 position. 

Okay, we got it. 
S/C Roger. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. 

HOU Two things. Ask him if he's getting anything at 

all out of thrusters 2 and h, that is, whether 
they are degraded or out. 

CYI Rog. 12, Canarys. 

S/C Go ahead. 

CYI Okay. We'd like to know whether you are getting 

anything out of thrusters 2 and k at all. Are 
they degraded or are they off? 

S/C Okay. Here's the sequence we went through. We 

attempted to patrol the spacecraft to a good 
position for S-5. We noticed that we were getting 
a roll every time we put it in a pitch or a yaw 
maneuver, so we finally went around and checked 
all the thrusters by turning off all the circuit 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:05 a.m. CST Tape 1U8 

Page 2 



breakers, then turning them on one at a time. 
We put our rate gyros on, checked our needles 
for deflation. We could also hear the thrusters 
solenoid open up of course. And both 2 and h 
had no response at all. We had no -- no response, 
but only those circuit breakers were on. One at 
a time. 

CYI Okay, copy that. 

S/C It is difficult to get a good evaluation because 

we didn't know whether our unusual attitude 
response to the control maneuver was due to the 
offset CG due to the Agena fuel aboard or whether 
it was the thruster powerup and this problem 
could have existed for some time before it dawned 
on< us what the situation was. 

CYI Roger . 

HOU Okay, very good Canary, would you ask him to send.. 

S/C We tried secondary attitude drivers to no avail. 

CYI Roger . 

HOU Would you ask him to send ACS gains low command 

U60, please. Do you copy? 
CYI Roger. 12, Canarys. 

S/C Go ahead. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:05 a.m. CST Tape lh& 

Page 3 



CYI Okay, would you send command ^60, ACS gains low 

to the Agena please? 
S/C Roger. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. It indicates low down here 

already, but we had to send it anyhow. 
HOU Okay, would you give us a PCM count from CA09. 

Charlie, Alpha 09 . 
CYI Roger . 

Standby one. 

Okay, that's l&k, and in the 0 2 position. 
HOU Thank you. 

CYI And 193 in the H 2 position. 

HOU Say again. 

CYI 193 in the H 2 position. 

HOU Okay, and we'd like an LOS main Agena. 

CYI Roger. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. 

HOU Okay, we recommend that he open the circuit 

breakers on TCA-2 and k. 
CYI Open them and leave them open, right? 

HOU Affirmative. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:05 a.m. CST Tape ikB 

Page k 



CYI 12, Canarys. 

S/C Go ahead. 

CYI Okay, we recommend that you open the circuit 

breakers on thrusters 2 and h and leave them 
open. 

S/C Okay, thrusters 2 and h circuit breakers coming 

open now. 
CYI Roger . 

12, Canarys, about a minute to LOS. 
S/3 Roger, Canarys. We. plan on powering up the 

platform at U0:30, you concur? 
HOU Affirmative. 
CYI That is affirmative. 

Flight, Canarys. 
HOU Go ahead. 

CYI Okay, looks he turned the platform on just for 

a few minutes there, and when he did the main 
bus. went to about 25. It was reading about 
26 prior to that time. 

HOU Was it back off? Did he turn it back off? 

CYI It is off now, right. He said he'd power up 

at 1+0:30, according to flight plan. 

HOU What did the main bus go to? 

CYI 25. 25 volts. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:05 a.m. CST Tape lk8 

Page 5 



HOU How about the current? How about the currents? 

CYI Standby one. 

Okay, looks like the main bus went up to about 
20 amps.-- A and B went up or 2 went up to 
about 10 or 12 amps. 

HOU Say the first one again. 

CYI Main bus 1 went up to about 20 amps. 

HOU Okay. 

CYI Okay, we've had LOS and both vehicles were go. 

HOU Roger. 



This is Gemini Control Houston. kO hours, 26 minutes now. 
We've just passed out of range with Canary. The crew was advised 
to open circuit breakers 2 and h. This was done -- this instruction 
was given since these thrusters are not doing anything at the 
present time. We felt that there was no point in giving them 
power. We will indicate again that thruster 2 is -used in a 
pitchdown mode and I believe we said earlier that thruster k 
was used for yaw right. This would actually be yaw left. We 
will also indicate that these thrusters 2 and k — neither one 
have a total effect on control authority. There are alternate 
mains certainly for accomplishing each of these maneuvers. 
So at kO hours, 27 minutes, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/13/66, 7:39 A. M. CST 



Tape lk9k, Page 1 

CRO Houston Flight, Carnarvon. 

HOU Go ahead, Carnarvon. 

CRO Okay, we noticed the Canary summary of total 

main bus current is a little low. Are we 
deleting that rule from the mission rule? The 
36. 

HOU Which one? 

CRO The 36 amps minimum for two hours prior to EVA 

and during EVA. 
HOU Not that I know of. Stand by, Jim. 

CRO That's 19 dash 3« Carnarvon has acq aid contact 

Agena. 

HOU Roger, Carnarvon. 

CRO Showing the Agena at FC-1 plus 90, 

HOU Roger. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU What do you show on main bus voltage now? 

CRO We don't have solid sync Gemini yet. We're not 

at AOS. What did you want, total main bus? 
HOU Yes, voltage. 

CRO Okay. Oh, voltage. Okay. Intermittent signal 

Gemini. Showing 25 volts. 
HOU Say again. 

CRO 25 volts. 



(Pick up continuation of commentary from Tape 1^9, Page l) 



GEMINI 12 MISSION COMMENTARY, II/13/66, 7:39 A. M. CST 

Tape 1^9, Page 1 



Gemini Control Houston, U-0 hours, 52 minutes into the 
flight of Gemini 12. The Gemini 12 spacecraft is now approaching 
acquisition with Carnarvon tracking. To quickly recap some of 
the activities that have taken place this morning. The Gemini 12 
crew was awakened about an hour and a half early this morning, 
earlier than the normal flight plan called for. Fuel cell 
stack 2B is not operative at the present time. This is one of 
six stacks in two sections in the fuel cell system. We're run- 
ning about one revolution plus ten minutes ahead of our normal 
flight plan. This is the case because of the fact that we can- 
celled or did not do our high apogee orbit on the first day, and 
also before Antigua it was reported that - during Antigua pass, 
I should say - it occurred before Antigua. It was reported that 
two 25 pound thrusters, the OAMS thrusters, thrusters 2 and U, 
were apparently down. This will have no effect, however, on 
our EVA plans for this morning. We're acquiring now at Carnarvon 
and so we'll stand by for any conversation which might transpire. 



CRO Showing 25 volts. 

HOU Say again. 

CRO 25 volts. 

HOU What are the currents? 

CRO 21 and a half amps., plus one, 13 may plus 2. 

Gemini 12, Carnarvon. 

S/C Go ahead, Carnarvon. 

CRO Okay, we're showing your 0 pressure is no go. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:39 A. M. CST 

Tape ikS, Page 2 



You're a little low. 
S/C Okay, we'll pump it up a little. 

CRO Let's get it about 710 onboard. 

S/C Very well. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU How about getting us a main when you get the 

heater on? 
CRO Roger . 

HOU And an Agena main. 

CRO Roger. 

CRO We're showing about 780 on cryo 0^ tank 

pressure. Way below expected. Okay, we 
also show them on both A pumps. Is that 
where you want them? 

HOU That's affirmative. That's what we did over 

the states. 

CRO I know that, but EVA prep shows secondary B. 

HOU Yeh, but we asked him to leave it on until he 

comes across the states again. 
CRO Okay, I'm getting both Delta P lights in 

section 1. 

HOU You have both lights? Or no lights? 

CRO 0 2 to water in both section 1 and 2. They are 

on. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:39 A. M. CST 

Tape 114-9, Page 3 



HOU Copy, on. 

CRO Okay, the 0^ tank pressure is coming up pretty 

nicely. It's 7^0 - 8hO correction. 
HOU Did you send us a Gemini main, Carnarvon? 

CRO Roger. 

CRO We're showing about 39 amps total spacecraft 

current . 

HOU Say again, please. 

CRO Showing about 39 amps total spacecraft current. 

HOU Okay, does he have the heater off now? 

CRO Oh, no. It's still on. 

HOU The summary shows kk and a half. 

CRO Okay, we just got a readout. You're correct. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU Ask them if they have Delta P lights also. 

I'.m sure they have. 
CRO Roger . 

CRO 12, Carnarvon. 

S/C Go ahead. 

CRO Roger. Confirm you have Delta P lights section 1 

and 2 ... the water . 
S/C Roger, we have. 

CRO Okay. 
HOU When did they come on? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:39 A. M. CST 

Tape &9> Page k 



CRO When did they come on? 

S/C Oh, I'd say about fifteen minutes ago. 

CRO Okay, thank you. We show your Og quantity is go 

and Og pressure is go at 875 ground readout, and 
except for your integrity check and all that your 
spacecraft current is go, your go for depress. 

S/C Okay, we'll continue now with the EVA prep. 

CRO Roger. 

S/C Carnarvon, we're just going to recheck with you 

but we have sunrise egress time of k2:k7:2&. Do 
you confirm? 

CRO That's affirmative. 

S/C Roger. 

CRO We've had LOS Gemini and Agena. All systems were 

go at LOS. 
HOU Roger. 



Gemini Control Houston, hi hours now into the flight. We've just 
had loss of signal over Carnarvon. The next station to acquire will be 
Grand Turk. This is at Ul:37 into the mission. So we'll have no con- 
versation for awhile with the crew as they make their way on the 26th 
revolution across the southern Pacific. At kl hours and one minute 
into the flight of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 8:08 am CST 

TAPE 150, 
PAGE 1 



Gemini Control Houston, kl hours 21 minutes now into the flight 
of Gemini 12. The Gemini 12 Spacecraft with its crew, Jim Lovell 
and Buzz Aldrin, is passing over the South Pacific now on its 
26th revolution. This is a quiet time in the mission since we 
do not have a station contact again until we reach Grand 
Turk. One point of clarification, this regards the instruction 
given to the crew to drink more water, this was brought to pass 
for a couple of reasons. One it will assist in disposing of 
fuel cell water, two we have a surgeon input here also. The 
surgeon feels that it is most desirable that they do drink 
water prior to the extravehicular activity. This is particularly 
identified since there are other means of venting or disposing 
fuel cell water. At the present time the Gemini 12 crew, Lovell 
and Aldrin, are very much in the midst of their preparations 
for the umbilical EVA. It won't surprise us in fact we'd rather 
expect that they will be quiet tight lipped in future conversa- 
tions on our passes down the line. This is particularly so when 
you consider the camera gear, the 25-foot umbilical, the chest 
pack, miscellaneous other equipment they've got a precision job 
of arranging on their hands. Also one term crosses up in the 
flight plan - crops up in the flight plan checklist. This is 
a clothes line . This will be strung in the cabin as the name 
implies, to attach cameras and other gear which might otherwise 
float outside the hatch during the EVA. One item that Aldrin 
does not plan to do even if they get ahead in the EVA preparation 
and that is to go on his ELSS or chest pack system early. Dick 
Gordon did this and was hindered somewhat because of his efficiency 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966 , 8:08 am CST 

TAPE 150, 
PAGE 2 

in doing so. The water boiler in the chest pack doesn't work 
except in a vaccum. So it will be around the time of depress- 
urization we're sure before Aldrin switches to his ELSS. 
At Ul hours 2k minutes into the flight of Gemini 12 at the 
present time, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 8:25 a.m. CST Tape 151 

Page 1 



Gemini Control Houston, 43 hours, 38 minutes, and we've 
acquired over the Eastern Test Range and we'll pick up the 
conversation now. 

S/C . . correlation between drinking water and 

those lights. 
HOU You say negative correlation? 

S/C I said there, is a definite correlation between 

drinking water and those lights. 
HOU Understand. You feel that the . . 

S/C Everytime that we use water to prepare the food, 

or drink quite a quantity of it, the lights go 

out. 

HOU Roger. We have indication here on the ground that 

you drank water after the Canary pass and before 
Carnarvon and the lights came on prior to 
Carnarvon. Is that correct? 

S/C Rog. The lights were on at Carnarvon. Prior to 

that, they came on. 

HOU Roger. Did you drink prior to their coming on? 

S/C I believe it was after, Bill, I'm not sure. 

HOU Okay. With respect to the Agena control situation, 

just a little rundown here. As you know, we are -- 
the Agena 's heavy with fuel and therefore, has a 
pretty high moment of inertia. This results in 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 8:25 a.m. CST Tape 151 

Page 2 



effectively low ACS control authority, and in 
order to avoid any high gas usage, and with 
your control problem, we'd like to recommend 
that you use rate command when you attempt to 
kill all rates prior to turning ACS on. You 
understand? 

S/C Roger. We are now inertial. As for the flight 

plan, and we'll stay in this condition until 
after EVA. 

HOU Roger. We suggest using rate command after 

EVA. Also, we'd like to have you each drink 
another pint or so of water as late as possible 
in the EVA prep. 

S/C Houston, 12, here. What is the reason behind 

this. Is it for the fuel cell or for body 
conditioning? 

HOU We're trying to condition the fuel cells. 

S/C Yeah, well I'd just as soon not get super 

saturated with water when I'm going to be 

exposed to a warm environment. 

Why don't you check that out? 
HOU Stand by. 

S/C Right now, I think I've been drinking an 

adequate amount of water to get through the 
day's activities. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 8:25 a.m., CST Tape 151 

Page 3 



HOU We agree with that; if you can drink any water 

it'll help us out fuel cell wise. 
S/C Okay, I'll — I'll sacrifice. 

HOU Roger. If you can get rid of any that might help. 

S/C I'll take care of that, too. 

HOU Okay. Also, if it is convenient for you, we'd 

like for you to fix the S-3 frogs on your mark. 
That ' s just one unit . 

S/C Roger, can you read me? 

LOVELL Can you read me now? 

ALDRIN Yeah, what did you do? 

LOVELL I don't know. I just heard something click. 

HOU Gemini 12, did you call Houston? 

g/C Roger, I thought I'd lost communications here 

for a minute. Are you? ready for the unit one? 
HOU Roger. On your mark. 

S/C Houston, 12, do you read? 

Do you read me, over? 

Houston, 12. 
HOU Go ahead. 

S/C Did some switch get hit maybe? 

Houston, 12. 

HOU Roger, read you five by. How me, 12? 

S/C Roger. We're having an intermittent problem 

here with electrical switches, I guess because 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 8:25 a.m. CST Tape 151 

Page k 



you're — we're losing communications. Would 

you let us go back on . . . 
HOU Right. Looks like your keying switch was stuck. 

You can fix unit one in the S-3 on your — 

convenience. On your mark. 
S/c Roger. Can you read me now, Houston. 

HOU Read you five by. 

S/C Houston, 12, can you read? 

HOU Roger, that's five by and we're not getting 

biomed. You might check your lead and your 

circuit breaker. 
S/C Okay. How about now? 

H*)U Looks good. 

S/C Okay. Unit one. On my mark. 3, 2, 1, Mark. 

HOU Mighty fine. 

Gemini 12, Houston, over. 
S/C Go ahead. 

HOU Roger. We'd like to get your feeling on how 

you feel about the possibility of dumping seme 
water through the urine system if possible. 

S/C Well, we might do it after EVA, Houston. We're 

in the middle of EVA prep now. 

HOU Okay, we won+t bug you on that then. 

S/C Yeah, we've got gear all over the cockpit, you 

know, as per standard procedure. 

HOU Roger. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 8:25 a.m. CST Tape 151 

Page 5 



HOU Gemini 12, Houston. One minute to LOS. 

GTI LOS, Turk. 

(pause) 

Gemini Control, Houston. We've just had LOS over Antigua. 
The lights referred to by the crew during this pass is the Delta P 
light and when this light is on it indicates an oxygen overpressure 
relative to water. We are standing by now for acquisition at 
Canary. We expect to acquire some two minutes from now at kl hours 
51 minutes into the mission. This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 8:39 am CST 

TAPE 152, 
PAGE 1 



Gemini Control Houston, kl hours 52 minutes now into the 
flight. We are coming into Canary now and expect conversa- 
tion with the crew momentarily. 
HOU Oxygen only 

Cl'I Oxygen only, roger. 

CYI Gemini 12, Canary Cap Com. 

SC Go ahead 

CYI Okay, we would like to get a 30 second 02 purge 

only on both sections if you have time. 

SC Roger 

What purge do you want first Canary? 

CYI One 

SC What section do you want first? 

CYI One 

SC Section 1. Section 1 coming up. 

CYI 12, Canary. Your 02 pressure is coming down a 

little bit, do you want to bump up to 90 degrees 

please? 

SC Roger, it came right down when we were checking 

out the ELSS . I've got the heater on now, we're 
building it up. 

CYI Roger . 

SC Purge complete . 

CYI Roger. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 8:39 am CST 

TAPE 152, 
PAGE 2 



HOU Canary, from Flight, send us another Gemini main 

and do you still have delta P lights? 

CYI That is affirmative. 

Okay, his cabin pressure is up to about 5.61 
but I think that is fran the ELSS checkout. 

HOU Roger. 

HOU Canary from Flight, and Agena bravo please. 

CYI Roger 

Flight, Canary 
HOU Go ahead 

CYI Okay we are getting some real weak radar signals 

this pass. I don't think you're getting any 
C-band off of it. 

HOU Roger . 

That is probably because of the antenna at Canary. 
They probably got it rolled over. 

CYI Roger . 

12, Canary, you're about one minute to LOS, 
your 02 pressure is looking real good now. 

SC Roger, well we'll stop it here. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead Flight. 

HOU You've just about had LOS, I'll catch him 

over Kano. 
CYI Okay 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966 , 8:39 am CST 

TATE 152, 
PAGE 3 



CYI He was about 900 on 02 pressure when he cut 

it off. 

We've had LOS both vehicles and both were GO. 
HOU Roger, GO. 

FD Kano go remote. 

KNO Kano is remote and we have acquisition. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead Flight 

HOU You saw everything okay for depress is that 

correct? 

CYI That is affirmative. 

HOU Thank you. Gemini 12, Houston Cap Com, 

through Kano. Standing by. 
SC Roger, Houston. 

HOU Roger, Gemini 12. Be advised that you're per- 

formance curves on your remaining stacks have 
been looking good since power up. 

SC Very good. 

Houston, 12 here. 

HOU Go ahead 12, we read you weak. 

SC Houston, Gemini 12. 

HOU Roger 12, go ahead. 

SC Roger, would you ask Chris for another bedtime 

story for me, I kind of miss them since the last 
flight. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 8:39 am CST 

TAPE 152, 
PAGE k 



HOU Roger, we'll have one for you. 

HOU We may be able to do better than that. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 8:1*9 A. M. CST 

Tape 153, Page 1 



HOU 



You may be able to do better than that. 



(PAUSE) 



HOU 



Gemini 12, Houston Cap Com. One minute to 



Kano LOS. Have fun on your EVA. 



S/C 



Rog. Thank you very much. Will do. 



HOU 



Roger . 



KNO 



Kano has LOS. 



Gemini Control Houston, 1+2 hours, five minutes into the flight 
of Gemini 12. That was Cap Com Bill Anders who advised the Gemini 12 
crew during the last minute of that pass to have fun on their EVA. 
During the first daytime pass while Aldrin is attaching the Agena 
tether to the spacecraft docking bar, Aldrin will move down the 
handrail which he attached yesterday. As he proceeds to the nose, 
he'll hook his left tether to an attach point on the end of the 
second telescoping section of the handrail. He'll hook his other 
tether to one of the rings on the Agena docking bar. While attaching 
the tether he will be essentially with his head over the docking cone 
and his feet toward the spacecraft window. This will be on the right 
side. He'll take on the appearance of a swimmer rather than the 
ride 'em cowboy type approach of Dick Gordon who performed the same 
task. We're evaluating different kinds of restraints on this flight 
today to maintain stable body positions. This is done to avoid the 
floating up and away effect from a work position. Aldrin will 



GEMINI 12 MISSION COMMENTARY, 1J./13/66, 8:^9 A. M. CST 

Tape 153, Page 2 



evaluate the handrail which he'll move down. He'll be wearing 
two waist tethers wrapped under the lower strap of his parachute 
harness. These are made of nylon parachute webbing and they can 
be varied in length and have hooks on either end for attachment to 
the rings on the TM and to the handrail. Back at the adapter work 
station he'll evaluate foot restraints which closely resemble or 
have been described previously as looking like Dutch shoes. These 
were carried on Gemini 11 but they were not used. They have per- 
formed well in simulations. Aldrin will carry forward a set of 
handholds from the adapter when he proceeds to the Agena work station. 
And he will evaluate these by sticking them on the Velcro. And for 
Gemini 12, our EVA plan is laid out in such a way that no individual 
task is vital to future events in the mission. If a single task proves 
to be too difficult, Aldrin will probably bypass it, going on to the 
next item. We want to see the degree of difficulty associated with 
each of the assignments as well as the degree of ease in which they 
can be performed, because it's just as important to know what's hard 
as it is to know what's easy. Now Aldrin does have regularly scheduled 
rest periods throughout the umbilical EVA and in the Gemini 12 ground 
rules, he can also stop and rest if he feels a need to do so. This 
is just like an athletic team that would call a time out. At U2 hours, 
8 minutes, our next station to contact will be Carnarvon. This 1b at 
k-2 hours, 26 minutes, 57 seconds and we will pass that conversation 
on to you as it transpires. This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 9:13 a.m. CST Tape I5U 

Page 1 



Gemini Control Houston, k2 hours, 26 minutes n<&w into the 
flight of Gemini 12. Jim Lovell and Buzz Aldrin axe on their 
27th revolution and approaching acquisition with Carnarvon 
tracking station. Over Carnarvon, we expect the G0/N0G0 
message for cabin depressurization and hatch open. And we 
are making contact now, so we'll stand by for conversation 
over Carnarvon. 

CRO Carnarvon has Gemini contact. 

HOU Roger . 

CRO Gemini 12, Carnarvon. We are checking out 

your systems now. 
S/C Roger, Carnarvon. 

HOU Carnarvon, from Flight. 

CRO Go ahead. 

HOU What did you show as the pump configuration? 

CRO Both A pumps. 

HOU Both A. 

CRO That is affirmative. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU Agena Bravo. 

CRO Roger . 

12, Carnarvon. Have you completed your suit 

integrity check yet? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 9:13 a.m. CST Tape 15U 

Page 2 



S/C This is 12. The command pilot has, the pilot 

has not. We.' re still getting ready for it. 
CEO Okay. 

S/C I'm pumping up the oxygen a little bit. We are 

already on depress and ELSS both. 
CRO Okay. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU Just remind him that he has both A pumps and 

to go ahead as per checklist as far as pump 
configuration. I think that comes later. 

CRO Okay. 

HOU You understand? 

CRO Roger. 12, this is Carnarvon. We're indicating 

here on the ground both A pumps in primary and 
secondary loops. We just want to remind you 
to just continue on with your checklist. 

S/C Roger. We have both primary A pumps on. Is 

that correct? 

CRO That's the way you are right now, but do it as 

per checklist. 
S/C Roger. 
HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU A Gemini Bravo. 

CRO Roger . 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 9:13 a.m. CST Tape 15k 

Page 3 



HOU Do you have our lights? 

CEO Say again. 

HOU Do you have Delta P lights? 

CRO That is affirmative. 

HOU Roger . 

CRO 12, Carnarvon. Confirm you are on manual 

0 g heater. 

s/c That's affirmative. I am, but it doesn't seem 

to be pumping it up much. We have the repress 
open of course. 

CRO Okay. 

S/C It's holding about 620. 

CRO Roger that. 

off 

S/C You want us to go / repress and pump it up? 

CRO Just follow your check list. 

S/C Roger. 

CRO Flight, Carnarvon, 

HOU Go ahead. 

CRO Okay. It seems with that 0 manual heater on 



he's not doing any good with that repress open. 

I told him to continue on with his checklist. 

It calls for closing it a little later after 

the integrity check. 
HOU Roger. 

Carnarvon, from Flight. 
CRO Go ahead. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 9:13 a.m. CST Tape 13k 

Page k 



HOU Send us a main, Gemini and B's, Bravo. 

CEO Roger . 

12, Carnarvon, we have one minute to LOS. 
All your systems are go with the exception of 
your cryo Og pressure. Just keep a close eye 
on that thing and get it up to 710 onboard 
before EVA. 

S/C Roger. But it doesn't seem to be going up, 

Carnarvon. I left the manual 0^ heater on. 

CRO Roger. It'll probably go up when you close 

the repress. 

S/C Roger. 

HOU Carnarvon, he's go as long as it is not going 

down. 

CRO Roger that. You're go for depress just as 

does 

long as that pressure / not decrease^ 12. 
S/C Roger, Carnarvon, but it is not increasing 

at all, with the manual 0^ heater on. It 

is still just about repressing. 
CRO Roger. Looks like its going down Flight. 

Flight, Carnarvon. 
HOU Go ahead. 

CRO Roger. We've had LOS both vehicles. 

HOU Roger. 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 9:13 a.m.CST Tape 154 

Page 5 



CRO And it looks like that 0^ tank pressure is going 

down. Started at 735, 730, LOS short about 711. 

This is Gemini Control Houston, 42 hours, 36 minutes now. 
The next station to acquire the Gemini 12 spacecraft will be at 
43: 08 and this will be over Texas. Now the Gemini 12 spacecraft 
will be passing well to the south of Canton and Hawaii tracking. 
However, the hatch opening is presently scheduled for 42:47:28 
with cabin depress some three minutes earlier. Our first 
opportunity to confirm whatever activity has transpired with 
the EVA will be over Texas. We will acquire Texas at 43:08. 
At 42:37, this is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, I966, 9:34 am CST 

TAPE 155, 
PACE 1 

Gemini Control Houston, k2 hours U8 minutes now into the 
flight of Gemini 12. At the present time we have no contact 
with the Gemini 12 Spacecraft. Our last contact was over 
Carnarvon. However, if Gemini 12 is holding to the present 
or to the flight plan schedule, the cabin depressurization 
would havs occurred by this time. We would expect hatch 
open time to have occurred. The countdown clock in Mission 
Control is counting up on the assumption that it did occur. 
However, we will not know the exact status until out next 
station contact and this contact will be at U3:08; 1+3 hours 
and 8 minutes into the mission over Texas. At k2 hours 
1+9 minutes this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 9'.k2 A. M. CST 

Tape 156, Page 1 



Gemini Control Houston, U2 hours, 55 minutes into the mission 
of Gemini 12 now. The Gemini 12 spacecraft is still proceeding 
across the South Pacific out of contact - out of station contact - 
at this time. The bottom countdown clock in Mission Control reads 
13 minutes, six seconds at this time. This clock indicates time 
of acquisition to our next station contact. This station contact 
will be Texas. At that time Bill Anders will be in contact with 
the crew. Bill Anders, the Cap Com, has been back frequently 
talking with Flight Director Cliff Charlesworth. This has been 
a frequent ocanxence in Mission Control. The Cap Com by the nature 
of his profession as an astronaut is quite active. He's on his 
feet perhaps more often than the other Flight Controllers here in 
Mission Control. Also, his console is directly in front of that 
of the Flight Directors. Often they have over the desk consulta- 
tions before passing word along to the crew. This is interesting 
activity to watch. It's much like splitting the duties of a 
quarterback on a football team with the Mission Director and Flight 
Director calling the plays and the Cap Com passing on the signals 
from Mission Control. k2 hours, 56 minutes into the flight now. 
This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 9:55 am CST 

TAPE 157, 
PAGE 1 

Gemini Control Houston, k3 hours 9 minutes now. We are 
acquiring over Texas and we're standing by. This is remoted 
through Corpus Christi and we're standing by. 

Gemini Control Houston we have conversation going on now 
with the Gemini 12 crew and we'll turn to the conversation. 
SC Roger we're ,]ust ahead of my field of view 

over it. 

SC I probably will when I do a little on the 

ELSS. 

LOVELL Say Buzz , where d'id you get that blue pack 

on your back? 

Where did you getj that blue pack on your 
back there? 
ALDRIN Blue pack huh. 

LOVELL Okay, here's ....{...a little difficult 

ALDRIN No, N it's a little tight. 

LOVELL Okay. 

ALDRIN Are you preparing it now 

LOVELL Okay good. 

ALDRIN Okay let me open it and out 

LOVELL Open her up. 

ALDRIN Ooen and I'm going to leave it 

LOVELL You have it opened and deployed. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 9:55 am CST 

TAPE 157, 
PAGE 2 



ALDRIN I think the best thing to do is posh it straight 

out, it seems to be loofced better that way. 
LOVELL Okay 

ALDRIN tfust maker- sure it is not going to come 

loose . 
LOVELL Yes. 

ALDRIN Even though you make complete PPS burn, if they 

do anything with it, it'll fly down. 
LOVELL Are you still cold? 

ALDRIN I am still cold. 

LOVELL Okay, sounds good. 

HOU Roger, sounds good. 

ALDRIN I am going to take the velcro off the S-10 even 

though I'm through with it, 

just another little bonus. 
All right the veloro is off.. 

LOVELL Okay velro off of the S-10, 

Okay, I_sfeer .'. . : ,'lislxen before I have you go 
ahead of the game here, why don't you just 
take your tether and go around to the work 
base a little bit and we'll get a couple of 
shots while you rest. 

ALDRIN All right. 

LOVELL He's getting in a good position for photography 

now. 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 13, 1966, 9:55 am CST 

TAPE T57, 
PAGE 3 

HOU Gemini 12, Houston Cap Com, could yau turn 

your heater to auto please? 
SC Roger, thank you. 

ALDRIN Well let's see, I think maybe I'll move this 

tether out to the other ring, that looks a little 
better . 

Okay, how is that for position? 
LOVELL Perfect 

ALDRIN J2oni4net me kick that S-10. 

LOVELL Pick your feet up. 

ALDRIN Okay, what ycnT-really don't want to do is hit 

the handle. 

LOVELL I'm having a harder time getting the camera up 

to the window then you are I think. 

ALDRIN Okay. 

Houston, how much longer on this pass do we 
have with you? 

HOU We got about another 10 minutes worth Buzz. 

ALDRIN Okay. 

LOVELL Okay, why don't you just rest here for a couple 

of minutes Buzz? I will try to turn it back 
here shortly, we're - we got time to go through 
the effort. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966 9:55 am CST 

TAPE 157, 
PAGE k 

HOU Everything is looking real good here Gemini 12. 

SC Hey point it towards the camera I might still 

have some film left. 
SC Houston, this is 12 here. I have a couple of 

messages for you. 

HOU Ready to copy. 

commemorate our 

ALDRIN Roger, to / launch day on November 11, 

I have an emblem here that I would like to 
leave in orbit. It says November 11, Vets Day 

LOVELL Stay right there Buzz, hold it a second 

HOU Roger copy, November 11 Vets Day 

ALDRIN I'd like to extend the meaning of it to 

include all of the people in the world who 
have been and are now and .will continue to 
strive for peace and freedom in the world. 

HOU Mighty fine. 

SC Okay, Flight you are doing a good job. 

ALDRIN However, I've got another one here. 

This message that I have concerns a contest 
coming up in the future . I think the 
precedent was set for this about a year ago. 
I'm not sure that Jim can read this one, so 
I will read it out loud to you so you can all 
hear it. 

GO ARMY, BEAT NAVY. 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 13, 1966, 9:55 am CST 

TAPE 157, 
PAGE 5 

HOU Roger, understand. Beat Army. 

ALDRIN I knew we had the wrong Cap Com on there. 

HOU It's no sweat. 

EOVELL Always a guy with a lai;ga nbnth . 

ALDRIN You're not taking pictures there friend 

LOVELL Camera just broke. 

Okay, I'J.1 geti a picture 6f.it Just a 'minute 

standby. 

, : That's a nice job, I hate to tell you that. 

ALDRIN You got it, how about the other one. 

LOVELL Oh, I got it. 

ALDRIN Okay. 

I'll just leave this up here. 
LOVELL Okay, I'll give in, it's about time for us 

tb pome back. 

Okay, let me put the cover on this. Maurer 

camera here for a second. 
HOU Everything is looking good Buzz, guess you 

slowed down a little. 
ALDRIN What a beautiful view. 

LOVELL Yea. 

SC We're completely upside down now 

HOU Roger 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, II/13/66, 10:05 A. M. CST 

Tape 158, Page 1 



HOU 
S/C 
HOU 

ALDRIN 
HOU 
LOVELL 
ALDRIN 

LOVELL 
ALDRIN 

ALDRIN 
ALDRIN 
LOVELL 



ALDRIN 
HOU 



Roger . 
garbled. 

Gemini 12, Houston. Everything is looking real 
good. Coming down nice. 
Okay. My feet are still cold. 



Okay, Buzzeroni. How do you feel? 

Great. Let me get one more portable handhold 

deployed out here. 

Take a. rest, maybe? 

Well, I don't want to risk it now going back to 
the adapter. I think I'm just about out of film. 
That Velcro holds pretty well. 
Okay, let's go. 

All right. Now you'll have two handholds supplied 
- portable handholds - supplied up on the nose, two 
pip-pins standing by. 
Right. 

Gemini 12, Houston. If you have a chance on your 
way back you might glance over your left-hand side 
and see if you see any ice on the vent. That's 
on the Command Pilot's side. 

I sure do. It's about, oh, six inches high in the 
form of a bush sort of a, icicling out radially. 
It's about, oh, eight inches across and it's pure 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:05 A. M. CST 

Tape 158, Page 2 



white . 

HOU Understand, six inch bush. 

AtDRIN Jim, I think this clamp here might possibl have 

come loose while I was using it as a handhold. 
AEDBIN I don't think it should be used as a handhold. 



LGYELL Understand. 

AEDRIN And I'm going to use the Velcro on the top of 

the ELSS to hold this open. 
LOVELL Okay, this Maurer camera sure beats the Hasselblad 

for taking pictures of EVA here. I can get up to 

the window. 

LOVELL ^11, ji m gi ad it (interrupted) 

AEDRIN ...wondered about that. 

LOVELL Yeh. 

AERRIN All right, I'm working my way back along the 

handrail now. 
LOVELL Okay. 

ALERIN How's the umbilical look, nice and clear? 

LOVELL Well, it's 35 now, Buzz, so we better go. 

AEDRIN Okay. Something's clicking out here on... just 

a few minutes. 
LOVELL it is on? 

AEDRIN it's not on. 

HOU Gemini 12, Houston Cap Com. One minute to LOS, 



GEMINI 12 MISSION COMMENTARY, H/13/66, 10:05 A. M. CST 

Tape 158, Page 3 



about 20 minutes to sunset. 
LOVELL Roger. Come on Buzz, let's go. 

ALDRIN Okay. 
LOVELL Quit horsing around. 

LOVELL Back in the hatch. 

HOU Roger. 

LOVELL Now he's working on number 1 on the .. list. 

HOU Roger. 

LOVELL Okay, now have retrieved your 16-mm camera. 

HOU Three minutes to Canaries. 

S/C Roger. 

ALDRIN Okay, here's the camera. Got it? 

LOVELL Okay, give it here. 

ALDRIN Wait a minute. Okay, I think it's free now. 

This is Gemini Control Houston, I4.3 hours, 2k minutes now. The 
Gemini 12 crew has as was indicated in our conversation is moving 
along very well. They're right down their time lines on this day side 
pass,. The Agena tether we read had been attached. The heart rates 
have been right down the middle as far as the Surgeon is concerned 
here. There was one slight peaking up. This is when he gave an 
indication consistent with our ground rules to stop and take a brief 
rest. They've been ranging in the area of 120 and below in the case 
of Pilot Buzz Aldrin who's currently on EVA. We're standing by for 
our next station. Our next station will be Canary at 1*3:26:26. That 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:05 A. M. CST 

Tape 158, Page k 

approximately a minute from this time. This is Gemini Control 
Houston. 



HOU Houston Surgeon Aeromed 1. 

(PAUSE) 

LOVELL Buzz, the umbilical .... before you start back 

it will get tangled. Before you go back. 

S/C Okay, Flight, Canary get the ELSS and the 

chestpack fastened. 

CYI Okay. 

HOU Good, Canaries. 

CYI Okay, he's about 760. 

S/C All right, that seems to be fairly secure. 

HOU Okay, stand by. 

LOVELL Okay, go ahead and bring her down. 

ALDRIN Okay. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. 

HOU Okay, in about one minute have him put the heater 

on manual on and watch it through the pass. 

CYI Okay, looks like he's turned the heater on already. 

It's coming up a little bit. 

HOU Okay. 

CYI Gemini 12, Canary Cap Com standing by. 

S/C Well, we have all of the umbilical out the hatch 

now. 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 10:05 A. M. CST 

Tape 158, Page 5 



LOVELL Okay, move to the nose, Buzz. 

ALDRIN Moving from the portable handrail back to the 

retro handrail now. 

LOVELL Okay. 

ALDRIN I'm putting one hand over the other, Jim, just 

getting myself going with a little momentum. 

LOVELL ELSS still high, right? 

ALDRIN The ELSS is still high. I can see that the EVA 

light is on. 

LOVELL Okay. 

ALDRIN I'm back at the big tail now. 

LOVELL Okay. 

ALDRIN Getting set to turn the corner. 

LOVELL Okay. 

ALDRIN Turning the corner. 

LOVELL Okay. 

ALDRIN Going around the edge. 

LOVELL Okay. 

ALDRIN Tieing the umbilical ... the big tail. 

LOVELL Okay. 

ALDRIN It's through the big tail. sights. 

LOVELL Okay. 

ALDRIN Is it straight now. 

LOVELL Yes, it's fairly straight from here. 

ALDRIN Okay, that's good. I'll just leave it there. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:05 A. M. CST 

Tape 158, Page 6 



LOVELL Okay hi minutes now, Buzz. 

ALDRIN Good show. 

LOVELL And I want you to be 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:15 a.m. CST Tape 159 * 

Page 1 



S/C I'll see about it. 

S/C Okay. 

S/C I want to be positioned with feet in foot restraints. 

S/C I'm going around now. 

S/C Okay. 

S/C And it looks like both lights are working. 

S/C Okay. Both lights working huh? 

S/C The umbilical goes behind you and you get your 

feet in the foot restraints. 
S/C Fine. 

S/C Hey, easy, easy, you J re shaking up the whole 

spacecraft. 

S/C Okay, left foot is in the foot restraint. 

S/C Sounds good. 

S/C And the right foot's in. 

S/C Okay. 

S/C At your convenience, ...(garbled). 

S/c And we want this in one degree per second. 

150, that's right? 
s/c Yeah, if you want to get some night shots. 

on this pass, I'll be glad to position for that. 
S/C Well, I don't think we're on an experiment now. 

It doesn't want to go in as easily as I would 

have liked. As a matter of fact, it isn't 

going in easily at all. 



GEMINI: 12 MISSION COMMENTARY, 11/13/66 ,.10:15 a.m. CST Tape 159 

Page 2 



S/C It's fine. 

S/c I don't see what the problem is other than this 

beam is sticking out quite a ways. 
S/C What seems to be your problem back there? 

S/c Would you believe that the linkage is broken in 

the . . bracket? 
S/C Is that right. 

S/C Wait a minute, maybe I can do a little repair work 

here. Ah, how about that? It's in. But the 
linkage is broken, I'm pretty sure. 

S/C How about resting for a little bit? 

S/C All right, I got the plug in. 

S/c Okay, it's kk minutes, we'll rest for 2 minutes. 

S/c I have the UV camera filt changed and the other 

one to do. 

S/C What do you see back there? Is everything okay? 

S/C Everything looks good. Can you see anything up 

front? 

S/C Right. They don't seem to have a tendency to 

come out, but that heel seems to be up a little 
higher in some places than anticipated. 

S/C Did you start the Camera? 

S/C No I didn't. 

S/C You didn't turn it on did you? 

S/C I'll turn it on now for you. 

S/C Well, wait a minute. Have we got enough time? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:15 a.m. CST Tape 159 

Page 3 



ALDRIN 
ALDRIN 



LOVELL 
ALDRIN 



LOVELL 
CYI 



there 

Yes. We're going to leave/at sunrise, so we've 
got h8 minutes. But I'll hold off a second. 
Yeah. There's nothing to take a picture of 
right now and besides, if we've got it oriented 
I'm afraid it would be way overexposed. 
Okay. I'm (garbled). . .12 

The neutral position that I have is just — 
just about at position where my — both hands 
would be freely in position to grab the hand 
bars, — the hand bars, you know. 
Yeah. 

And that's just primarily a suit position. Now 
if I move a little forward toward the workstation, 
I have just a very small tendency to come back, 
but you know can put a suit in several different 
positions and they'll stay. I'm going to lean 
back now. I am leaning straight back and I'm 
almost parallel with the — my back 'is parallel 
with the longitudinal axis now. And this is a 
little bit harder than it was under water. 
A little bit more leg force. I'm looking right 
down and we're going right over the desert. I 
guess this is Africa, huh? 

I think so. Hey Canarys, are you still with us? 
Roger, got about a minute to LOS. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:15 a.m. CST Tape 159 

Page k 

into 

L07ELL Okay, why don't you just inquire / Houston 

sometime at your convenience about the next 
exercise which is the tether experiment with 
these thrusters and Buzfe qjtid I will just put 
in these ... and gone on upstairs. 

CYI Roger. Copy that Flight? 

HOU Negative, say again. 

S/C (garbled) 

CYI Gemini 12, you want to know all about the 

thrusters for the tether exercise, is that 
correct? 

S/C Yes, the tether is f tta anci d I just want to know 

what their thinking is on using 2 and k or just 
what they want for this exercise ... (garbled). 

CYI Roger. We'll pass that on. Flight Canarys. 

HOU Go ahead. 

CYI Okay, he wants to know about the use of thrusters 

for the tether exercise, whether they are going to 
use 2 and h or not and we've had LOS. 

HOU Okay. Kano remote. 

S/C I don't have my checklist. 

KNO Kano is remote and we have acquisition. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:15 a.m. CST Tape 159 

Page 5 



HOU 
ALDRHi 

LOVELL 
ALDRIN 
HOU 



LOVELL 
ALDRIN 
LOVELL 

ALDRIN 
LOVELL 

ALDRIN 
HOU 



LOS main, Canary. Gemini. 

I'm changing cameras now. I'm changing the film 

for this -- this side camera up there. 

What? 

The side camera. 

Gemini 12, Houston Cap Com through Kano. Everything 

is sounding great on the ground. 

Okay. By far the hardest job was putting in this 

camera here. 

Okay, Buzz.. uh„ . 

It may not come out. 

Okay, pull 'the umbilical cord so it doesn't 
slip in the handrail. 
Already done. 

Install the penlight and actuate the guidelights 
on the handbars. 
Roger . 

Gemini 12, Houston Cap Com, through Kano and 
standing by. 

Roger, Houston. We're down to where we're going 
to start the adapter workstation task. I'm in 
the process of changing film on my lefthand 
camera, which is no mean task. It's pretty 
difficult as a matter of fact. Buzz is standing 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:15 a.m. CST Tape 159 

Page 6 



by. He's going to be tied up with equipment 
pretty soon. 

HOU Roger. Everything is looking real good. 

ATDRIN I don't know whether you heard through Tananarive, 

I had a problem with the camera. Looks like the 
was 

linkage in the bracket / broken. I was able 

to stick my finger in underneath it and get it 
# to work properly, so it is now installed. There 

may be a problem getting the camera off. 
HOU If you have a problem taking it out, maybe you 

can remove the camera from the bracket. 
LOVELL Yeah. 

AL3RIN I've got both penlights out now. Incidentally, 

one of them looks like it was heating up a good 
bit. The glass on the front or whatever it is 
bulged out a good bit. 

LOVELL Okay, Buzz, start your camera. 

Okay, you got all the switches? 

ALDRIN All but the ...(garbled). 

LOVELL All right. ...(garbled). 

ALDRIN Wait a minute. When I push it in, it starts to 

move. All right. Let me see if it's going now. 
; Keeps taking pictures but ; the bracket is fairly 

free to swivel. No wait a minute. I'm getting 
it started. It's taking pictures. 



GEMINI 12 MISSION COMMENTARY, 11/13/66 10:15 a.m. CST Tape 159 

Page 7 



ALDRIN 
LOVELL 



HOU 
ALDRIN 



Okay, if you want to, Buzz, why don't you 
rest for two minutes because I want to change 
a tape, and this is a good time to change it. 
All righty. 

Believe it or not, this is going to get tiresome 
pretty soon. I want to change it before it gets 
started. 

I'm getting a slight warm posterior. The sun 

is setting very agreeably. It's great from 

a visibility standpoint, but it's not too good 

from the heating standpoint. It's still plenty 

cool, but it is getting alittle warm, 
the 

Roger, that's/sunning effect. 
Yeah, the sun ...the sun on Cernan. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 10:25 a.m. CST 

Tape 160, Page 1 

Lovell Ok, new voice tape installed. 

Aldrin It sure gets bright back here with all the sun. 

HOU Gemini 12, Houston. I'd like to remind you to 

check your manual 0 2 heater. 
Lovell Roger, I'm at 17 now, I'll turn it off a little bit. 

HOU Roger 

Lovell Ok, Buzz, are you rested? 

Aldrin Ok, as I press myself down against the bottom of 

the suit I can feel the zipper a little bit on 
the warm side. 

Lovell How do you like the foot restraints, Buzz. 

Aldrin They are great. I don't see any problem in po- 

sitioning my body at all. 
Lovell We are going to the checklist now. 

Aldrin Yes, I can see it. 

Lovell Any time you want to you can start the . . . 

Aldrin Well, you're the doctor, you can... 

Lovell Well, it doesn't make any difference 

HOU Three minutes to sunset. 

Lovell Ok, thank you. 

HOU Gemini 12, Houston, one minute to Kano LOS, you'll 

be at Tananarive in 9 minutes. 
Lovell Ok, fine. 

KNO Kano has LOS 

Gemini Control Houston, U3 hours, h2 minutes into the mission 
of Gemini 12 now. You have just heard the conversation during this 



GEMINI 12 MISSION COMMENTARY, H/13/66, 10:25 a.m. CST 

Tape 160, Page 2 

long pass, and the umbilical EVA is moving along very well at 
this time, somewhat ahead of our normal time lines, as a matter 
of fact. The pilot, Buzz Aldrin, was scheduled to be back to 
the adapter work station sometime prior to sunset, he did better 
than that. The broken linkage referred to in the conversation - 
this is a bracket for the... is concerned with a bracket for the 
l6mm camera located back in the adapter work station. Heart 
rates are holding extremely well, at Canary LOS Pilot Buzz Aldrin 
was logged at 102 heart rate and 16 respiration rate - well within 
what would be expected - what had been anticipated. Command 
Pilot Jim Lovell is logging 96 beats at the present time. Back 
in the work station, the adapter work station, Aldrin performs 
a variety of tasks - there's about 17 numbered tasks and he's 
back there primarily to evaluate his restraints, the foot restraints 
and waist tethers. As was indicated in the conversation he's tried 
the foot restraints already, he indicated that it was close to the 
same amount, perhaps a bit more difficult than what he had experi- 
enced during underwater simulations prior to the mission. The 
tasks that he will be involved with also are of a variety that may 
be needed in future EVA missions. Aldrin will work with a torque 
wrench back at the adapter work station and he will measure in inch 
pounds the amount of torque applied to a couple of bolt heads" batik 
there and he will remove another bolt similar to those that might 
be expected in a Saturn SU-B dome and he will put it back into 
another hole. He will do this with and without foot restraints. 
Here he will try to cut cables with debris cutters and also we would 
like to get a comparison between one and two-handed tasks back there. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:25 a.m. CST 

Tape 160, Page 3 
Aldrin will have a connector that can be plugged in with one 
hand and two with two hands. There are a couple of rings and 
a couple of hooks. Cernan had some problems with this. He 
was without benefit of the foot restraints, however. In the 
case of Aldrin, he will try and link these. Up at the top, he 
will have three different widths of velcro strips and he will 
see how easy it is to pull these. An interesting aspect - 
the tasks that will require a continuous or semi-continuous 
effort like the connectors and the bolt tasks are down low on 
the panel and these tasks at the top are the kind where you 
make one reach and they are over. With the space suit on, the 
helmet on, and the chest pack on, Aldrin in a normal position 
will be crouched over and the placement of these tasks is to 
avoid working against the suit. In his set of circumstances 
at the present time, he will have better access to the lower 
part of this work panel. At U3 hours, k6 minutes, this is 
Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:35 a.m. CST 



Tape 161 
Page 1 



Gemini Control, Houston, U3 hours, U9 minutes now into the flight 
of Gemini 12. We are at acquisition with Tananarive. We don't know 
if there will be any conversation during this pass because it is a 
short pass, and we are standing by now. 



S/C (First part garbled) 

Lovell Why don't you rest here for awhile. 

CAP COM Gemini 12, Houston Cap Com through Tananarive and 

standing by. 

Lovell OK, Houston. We will rest a moment. 

CAP COM Roger 

Aldrin The- right glove at the base of thei thumb is beginning 

to have a little bit of a thtfob . ' 
(Garbled) 

SAP COM Gemini 12, Houston Cap Com. One minute to LOS. 

Carnarvon in 10 minutes. 
Lovell OK. What is the status of your visor? Is it fogged or anything? 

Aldrin No. It's clear as a bell. 

Lovell The face cover? Is it fogging at all? 

Aldrin Negative 

Lovell Are you perspiring at all? 

Aldrin Negative 
Lovell No perspiring. 

Aldrin I'm bending back now, looking up at the stars. 

TAN Tananarive LOS. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:35 a.m. CST Tape l6l 

Page 2 

Gemini Control Houston, 43 hours, 53 minutes now. We've just 
had loss of signal with Tananarive tracking station. Our next 
station to acquire will be Carnarvon, this is at kk hours, 2 minutes 
into the mission. About nine minutes from this time. This is 
Gemini Control Houston. 
END OF TAPE 



GEMINI 12 MISS ICR COMMENTARY, 11/13/66, 10-.l»6* a.m. Tape 162, Page 1 

Gemini Control Houston, feU hours, one minute into the flight 
now. Before we acquire at Carnarvon we thought we would background 
you on these two pennants that were referred to in the air/grouhd 
conversation. One is.. uh.. both pennants I should say, are white with 



dark blue borders, retangular in shape and/one that was first referred 
to it says "November 11, Vet's Day" and on the reverse side of this 
pennant is an American flag. The second flag, also made out of the 
same material, said "Go Army, Beat Navy" this no doubt refers back 
to the flight of Gemini 6 during the 7/6 mission and the sign that 
Command Pilot Schirra which said "Beat Army". Both were rolled up 
in portable handhols and, the first pennant, by the way, would have 
gone on November 11, for the umbilical EVA, is our initial flight 
schedule had held. We should also indicate that both of these 
pennants are made out of flight qualified nylon. We have acquired 
now at Carnarvon and we'll pick up the conversation. 
Aldrin ...also near the raised bush where the bolt was 



the 



attached into 



Lovell 



Ok. Oh I see, I see it. You were able to get the 



bolt in, huh? 



Aldrin 



Right. Now, a loose bolt, with a washer is being 



inserted manually on raised tether, the bottom bolt, 



and its a delicate operation. 



Lovell 



Take it easy. 



Aldrin 



The bolt is just fitting right straight into the hole 



now, zero g is holding it here, its not engaged. 



Lovell 



Oh? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10:1+8 a.m. Tape 162, Page 2% 



CRN 

Love 11 



CRN 

Aldrln 



CRN 

Aldrin 



Aldrin 
Lovell 
Aldrin 

Lovell 
Aldrin 



Gemini 12, Carnarvon standing by. 

Roger, Carnarvon, I'm going to go to manual on the 

0 2 and pump up the oxygen. 

Ok, we were Just going to suggest that. 

Too bad the camera wasn't working, that would have 

been a beautiful picture. 

Carnarvon send us another main when he turns the heater 

on please. 

Roger 

The picture I was referring to was that I fumbled the 
bolt and the washer and they both went drifting in 
underneath my helmet, I pushed them forward, then 
moved myself away from them for a moment and caught 
both of them, and put them together and they are now 
going in manually and I'll give it a couple of mare 
turns and put it in the rest of the way. 
Oh I see. You are playing a little orbital mechanics 
to retain proficiency. 

Yeah, I had to do a little rendezvous there. 
I see, ok. 

Yeah, this nut and bolt workstation is way too close 

to the tethers. . .the right one especially. 

...the tethers are too close to the work stations. . .right? 

Right. 



GEMINI 12 MISSION COMMENTARY, II/13/66, 10:48 a.m. Tape 162, Page 3 

/Udrin Ok, looks in good shape, I'm using the wrench here 

and tightening up on her. Then there's the same 
problem overcoming the rachet door, in other words, 
you unwind just about what cmost to what you wind; 
there, its going In now. 

Lovell Ok. Let me know when you have the bolt tightened down. 

HOU FLT Carnarvon from flight. 

CRN Go ahead. 

HOU FLT Does he have that heater on? Your main doesn't show. 

He does?? Ok. Give us another main, please. 
CRN Ok. 
Aldrin Ok, its tight. 

Lovell Ok, it 1 says here we to evaluate the ...reflex, and 

we can rest a few minutes, do you want to take a look 
at that? 

Aldrin Ok, let me stow the... 

ALDRIN Wrench is stowed. Okay we can look at the hook and 

ring connections. 
ALDRIN Right. Got out the big ring. The Velcro didn't 

want to come undone on it. Main ring is out and 

and the big hook and the two are hooked together. 
LOVELL Okay, big ring is out and both hooks are hooked 

together. Okay, let's take a look the small one. 



GEMINI 12 MIS6..0N COMMENTARY, 11/13/66, 10:48 AM CST, TAPE 162 

PAGE k 

ALDRIN All r :.,?ht. The small ring is out and it is more 

of an effort to get it. The proper position in 
your hand. I am going to hook it in the big ring. 
Into the big hook. The big ring is now engaged 
into the ring. The hook is engaged into the big 
ring, and the little ring. 



LOVELL Okay, now take a banana pillow and rest for a 

while . 

ALDRDT You want the little ring? 

LOVELL I thought you had evaluated the little ring. 

ALDRIN The little hook goes ... 

LOVELL Okay. 

CRO Gemini 12, Carnarvon. We have 1 minute before 

LOS. Just a reminder on your manual heater. 

S/C Roger, Carnarvon. I am Just about to switch 

manual right now. 

CRO Okay. 

s/c ...700.'. 

CRO Copy that. 

LOVELL Okay, Buzz, while you are resting here... 

ALDRIN No, not right now. 

LOVELL 

ALDRIN Well, ...make one ring evaluation of the little 

ring. Ready. . .little hook is open. Ring... 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 10: U8 AM CST, TAPE 162 

PAGE 5 

ALDRIN ..two axe back together. I am going to stow 

the little ring where it belongs. The hook 
is stowed, but the little ring isn't. Okay, 
everything is back where it was. 

LOVELL Okay, take a banana pill and rest for a few 

minutes. 

CRO Carnarvon has had LOS both vehicles. All systems 

go at LOS. 
HOU Roger, Carnarvon. 

Gemini Control Houston kk hours 11 minutes into the flight 

of Gemini 12. Buzz Aldrin at this time is still back in the 

adapter workstation area performing the various tasks that are 

involved back there. His heart rates are holding very well 

indeed, ranging from a low of 88 up to 120. No higher than 

120 or 22 during this particular time frame. The foots restraints 

back there by the way, bring to mind an old song, the old song 

being "Oh, those golden slippers". The foot restraints are 

gold, as a matter of fact, painted gold for thermal reflection and 

this Sunday morning Buzz Aldrin has become the first man to try 

on those golden slippers in space. At this point they appear 

to have worked very well indeed. The next station to acquire will 

be Canton at kh hours 22 minutes into the flight, some 10 minutes 

and this is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 11: 08 a.m. CST Tape 163 

Pafee 1 



Gemini Control Houston, hk hours, 22 minutes now into the 
flight of Gemini 12. We're approaching Canton tracking station 
in the Pacific at this time and we should acquire Canton or 
Canton should acquire the spacecraft momentarily. And we're 
standing by now — standing by for any conversation which will 
transpire on this pass over the Pacific. 

HOU Canton, go remote. 

ALDRIN All right. It's in and let me make sure its 

back in the ... (garbled). 
LOVELL On 250 degrees per second. 

ALDRIN Okay. 
LOVELL And its a good guess. 

ALDRIN Okay, now let's see. When the ... says no, 

I turn off the camera and . . . (garbled) 
LOVELL Find out when it's moving. 

ALDRIN It's moving. 

HOU Gemini 12, Houston Cap Com through Canton and 

standing by. 
LOVELL Roger, ...(garbled). 

ALDRIN I think one way to weigh the tether is the portable 

handhold . . . 

LOVELL Yeah it is. How do you like that nose handrail? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:08 a.m. CST Tape 163 

Page 2 



ALDRIN Well, it's pretty hard to evaluate. until you 

see how they are up here. I am backing toward 
the Agena now. That's the ...(garbled) 

LOVELL How far are you from your tether? 

ALDRIN Now don't pull me in with it. 

LOVELL How about . . . 

ALDRIN I thought maybe I'd have a look at the right 

portable handhold. 
LOVELL Okay. 

ALDRIN I think maybe that'll do. ... is right on the 

top and it looks to be ... 
LOVELL Okay. 

ALDRIN Think maybe I should ... it off? And it's 

into the side, . . . 
LOVELL Okay, sounds good. 

ALDRIN I need just a little bit of body torque here, 

left 

The/waist tether is in place with the portable 
handhold . 
LOVELL Okay. 

ALDRIN The left waist tether is off of the portable 

handhold. And it's intoivthe midfit. The 
. . . pin is out . 

LOVELL Okay. 

ALDRIN And that one is in. ... out slowly. It's back. 

LOVELL Take it easy. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11: 08 a.m. CST Tape 163 

Page 3 



ALDRIN ... centered in now. I'm not going to 

lock it. There it is. Okay, that's done 
now. Let me do experiment S-10 on the way 
in. We can get it out of the way. Okay, time 
for a little breather here. 

LOVELL Okay, rest for two minutes. I'll talk to the 

ground . 

ALDRIN . . . what a terrible blow. . . . (garbled) 

(Garbled) 
LOVELL. Stand by. 

ALDRIN Lovell. 
LOVELL Yes, Buzz. 

ALDRIN I gttess. we'd better cheoke that retro camera 

and make sure it's working. 
LOVELL As soon as I get the lights on. Cut your ... down. 

ALDRIN Okay, .IJllrturn off both cameras in a second. 

LOVELL I ...(garbled) goes. 

ALDRIN Did you say ...(garbled)? 

LOVELL Better not. 

ALDRIN No, it says the same thing. 

LOVELL Wait a second ... I'll get it for you. 

HOU One minute to LOS. 10 minutes to Guaymas. 

LOVELL Okay. Hold on a second. 

Buzz. 

ALDRIN Yes? 

LOVELL Okay, let's do a little checking first. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:08 a.m. CST Tape 163 

Page k 



ALDRIN I have one ... remaining here. Let me see 

if I can get it here. The handhold — 
the spacecraft . . . 

CTN Canton has LOS. 

Canton has LOS. 

Gemini Control Houston, hk hours, 31 minutes now into the 
flight of Gemini 12. Pilot Buzz Aldrin is at the Agena work- 
station now tethered with his head facing the command pilot's 
side of the spacecraft, the.' left side of the spacecraft. At 
the Agena workstation, he has what is called an Apollo torque 
wrench to work with. This wrench can be set for torque settings 
from 50 to 200 inch pounds and if he breaks out the wrench at 
a given value, he moves the torque value up a notch. He also 
works with a couple of connectors up there. One which would 
approximate an electrical connector, one a gas connector. 
These are at this station. Our next station to acquire, next 
tracking station to acquire is Guaymas and this is at kk hours, 
Uo minutes, k seconds, or some 8 minutes from now. This is 
Gemini Control, Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 11:26 a.m. CST 

Tape l6U, Page 1 

Gemini Control, Houston, kk hours, 1+0 minutes now into the flight 
of Gemini 12. We are standing by now for acquisition at Guaymas. 
We expect conversation at any time. 

Bring up on it and pushing- away. And I am free 
with no ace cutters. 

OK. You are free with no ace cutters. Righto. 
I am going to start cleaning up shop here, fiispensihg 
with waist tether, portable hand holds. 
OK. Better get rid of everything. 
I trust you are recording all of this. 
Boy, you are a litterbug, aren't you? 
I had a backup Veteran space sign here. 
There it goes. 

Alright the work station is clear and no tethers. 
Lets take a look at .... preparation . 
Pardon 
No tethers. 

Gemini 12, Houston Cap Com standing by. 
Roger, Houston. 

Disconnect with no tethers and unhook > and hook 

back up by the electrical connectors. v. with 

no waist tether, unhook... and hook back up. 
OK 

I think we ought to make one last check of the 
S-10. 



Aldrifi 

Love 11 
Aldrin 

Lovell 
Aldrin 
Lovell 
Aldrin 
Lovell 
Aldrin 

Lovell 
Aldrin 
CAP COM 
Lovell 
Aldrin 



Lovell 
Aldrin 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:26 a.m. CST 

Tape 16k , page 

tell you 

Aldrin I will / a what this part of the Agena looks like. 

Lovell Hey Buzz, you never did wipe off my window, did you? 

Aldrin Oh, ok. Give me a half a minute. 

Lovell Hey, would you change the oil too? 

Aldrin Change your oil? Yeah, .alright. I can see the 

tether looks hooked up and the spacer is agape. 
Lovell Ought, tp be some great pictures here. 

Aldrin I'll try it. 

Lovell OK, running out of voice tape, Buzz. 

Aldrin Let me take one last look at the S-10. 

Lovell You go ahead and look and I will change voice tapes. 

CAP COM Gemini 12, Houston Cap Com. You needn't answer 

while you are changing. -the voice tape. I would 
like to comment that if you are willing, we 
would like to run a quick check of your 61ins 
thrusters by having Buzz observe a thruster 
firing while he is standing in the hatch when 
you have a chance. We want all the gear inside 
and just prior to ingress when you are removing 
the EVA camera. You might think about this and 
give us a call when you have a chance. 

Lovell OK. That sounds pretty good. We will do that. 

CAP COM OK. We have a procedure here for you when you 

get squared away. We will talk you through it. 

Aldrin I have got to wipe his window off first here. 

Helping any? 

Lovell No 

Aldrin No? Its slippery if anything is on the outside. 



Lovell 
Aldrin 
Lovell 
Aldrin 
Lovell 
Aldrin 
Lovell 
Aldrin 
Lovell 



Lovell 
Houston 



Aldrin 
Lovell 



Lovell 
Aldrin 



! MISSION COMMENTARY, ll/l3/66, 11:26 a.m. CST \ 

Tape l6U, page 3^, 
Wait a minute, I think it is looking out now. 
The film is coming off. See any improvement? 
Yeah, it looks good. 
OK, where is the bad spot? 
Right over here in the corner there. 
Right here? 

I know where you can get a job, Buzz. 
Huh? 

I said that I know where you can get a job. 
Know where I can get a job, huh. 

I am still trying to get this other tape back in the 
(garbled) 

I can see from the outside that you have quite a 

film on the inside. 

Yeah. 

Texas remote, Guaymas local. 
Texas remote. 

Can you hold onto this (garbled) 

No. I have got to secure this tape which is quite 

a job. There we go, there we are. 

I'm sorry that we didn't get a picture of that 

(garbled) 

Do you have anything in the way of (garbled) 
Yeah 

(Garbled) 



Lovell 



OK. Come on back. 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 11 -26 a.m. CST t 

Tape l6k, page U' 1 

Aldrin Alright. Lets bring in the umbilical. I think that.. 

yeah, I have the end here. 
Lovell Ok 

Aldrin Yeah, it is just about watppped around me here. 

Lovell Houston. 

CAP COM Go ahead, 12, copy. 

Lovell OK, we are getting prepared now to bring in the 

umbilical here. 

CAP COM Roger, let me know when you are ready to try this 

check of your thruster. 
Lovell OK. 

Aldrin We have got just about all of the umbilical that is 

coming in before I hand in the LOSS and I am 
standing in the hatch. 

Lovell OK is the umbilical clear and everything, Buzz? 

Aldrin Yeah, pull in just a little. 

Lovell OK. What about the retro camera? 

Aldrin OK a little more 

Lovell Get the retro camera . Watch your feet . Watch your feet . 

Aldrin OK 

Lovell Put your feet down further. Thats it. Keep your feet 

down, Buzz. Camera stowed. 
Aldrin Yeah 

Lovell OK Houston, go ahead. What do you want us to do? 

CAP COM OK, Gemini 12. Confirm that the adapter is clear. 

Aldrin The adapter is clear. 

two 

CAP COM OK, Jim if you can, turn on your/ attitude circuit 

breakers. The ones that you turned off previously. 



GEMINI 12 MISSION COMMENTARY, 11/13/66. 11:26 a.m. CST . *■ 

Tape l6k , page 5 



Lovell 
CAP COM 
Lovell 
CAP COM 



Lovell 
Aldrln 



Lovell 
CAP COM 
Aldrin 

CAP COM 

Lovell 

Aldrin 

CAP COM 
Aldrin 



OK, will do. They are on. 

Ok, ©AMS control power on and direct. 

Have OAMS and direct. 

Ok, we would like Buzz to observe the upper right 
side of the spacecraft on his side. That is 
thruster no. k area while you give a very short 
blip, yaw right. 

Roger, short yaw right. Buzz, you all set? 

OK. I can see something coming out there. It looks 

like thruster is coming up. H^w about hitting another 

one for comparison, the one that is on the same 

Jf&S&FSPk there, is that no. 3- 

You want no. 3. That is down below. 

OK, hit pitch down while you are at it. 

The comparison da the one that is in the same quartrent 

there will be firing up. 

Roger, pitch down. Pitch up 

Pitch up. 

Alright now in comparison, that was a lot cleaner 
flame . 

Roger, was the first a flame or a fluid. 

There wasn ' t a flame barejfo on either of them that I 

could see. It was only about 30 degrees away. 

Roger, why don't you try one more short yaw before you 
come in. 

Very good idea. Try that once more. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:26 a.m. CST 

Tape 16U, page 6 

Lovell Yaw right 

Aldrin Alright, there is a definite difference. It looks 

like that there is a lot of compartment material 
coming out. 

CAP CC44 Roger, copy. 

doesn 1 t 

Aldrin Want to try ansTtbthedene, that/seems to be working. 

Lovell (Garbled) 

CAP COM Negative, you can't see it 

Lovell At thrust, there are pieces of slight, like after 

the urine dump, that occasionally dome bjroout ih.vthe 
direction of that thruster that was inoperative. 

CAP COM Roger, copy. Go ahead and turn your qamS control 

power off and start your ingress. 

Aldrlil Alright, I guess., how about the handrail? 

Lovell OK 

Aldrin We missed getting a picture of that one. 

Lovell Yeah, ok. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:36 A. M. CST 

Tape 165, Page 1 



LOVELL Okay. 

ALDRIN We missed getting the picture out. 

LOVELL Yen, okay. 

ALDRIN Do you have anything going? 

LOVELL Huh? 

ALDRIN Do you have to do anything to get a picture? 

LOVELL Well, I don't know what to say, Buzz. Go ahead 

and throw it away. 
LOVELL Pull it down to the left. 

ALDRIN I! 11 slow it down so you can see it. 

LOVELL Okay. 
ALDRIN Okay? 
LOVELL There she goes. 

ALDRIN Flying low. . . 

LOVELL The highest - the world's highest javelin thrower. 

ALDRIN Better. .get back. It's lonely. 

Let's go end over end now. Okay, let's go back 
in here hatch holding device . 

LOVELL Yes, try and get this camera down on top of the 

camera box. 

HOU Gemini 12, Houston Cap Com. Confirm CAMS control 

power off. 
LOVELL Roger, CAMS is off. 

HOU Good. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:36 A. M. CST 

Tape 165, Page 2 



LOVELL All right, looks like the 

ALDRIN Okay, looks like filled with debris. 

LOVELL There are flecks of dust in it but it looks.. 

ALDRIN Okay? 

LOVELL Roger Deploy the hatch holding device. 

HOU Gemini 12, Houston. If you can turn your manual 

0 2 heater. 
S/C All right. 

LOVELL Okay. . 

ALDRIN You ready for the (interrupted) 

LOVELL Check to see if the hatch pawls are in the lock 

position. 

ALDRIN Wait a minute, I have one more thing to .... 

LOVELL Okay. 

ALDRIN was the last thing you said? 

LOVELL Hatch pawls in lock position. 

ALDRIN Yes. They're in lock. 

LOVELL Hatch holding device teeth are opened up, right? 
ALDRIN Where am I right now? 

LOVELL Here you go. Okay, clear hoses. Okay, ingress 

into the cabin, release restraints and hand me 
the ELSS. 

ALDRIN All right. 

LOVELL And can you, what? 

ALDRIN I want to tell you that the moved away 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:36 A. M. CST 

Tape 165, Page 3 



LOVELL 
ALDRIN 
LOVELL 

ALDRIN 
LOVELL 



LOVELL 
ALDRIN 



ALDRIN 

HOU 

S/C 



from the ... area. 
Okay. 

... my restraints are coming off. 

Okay here's the seat, Buzz. Sit down. 

That's it. Okay, hand me that monster. 
1*11 never forgive you if you lose that. 
What this... (garbled) 
Oh, I'm going to lose that one. 
All right, lowering restraints through loops. 
Why ever do you want to pick the top one first? 
All right, that looks good. Just has a slight 
twist on it. If you can turn that toward you. 
Turn it toward you this way. Okay, that's right. 
Take the ELSS and lower it down. 
All right, getting in position. Let me check the 
~ .... hatch .... camera box. 
Okay. All set? Okay. . . . make sure .... 
All right, the footwell looks nice and clean. 
Put .... on to the right-hand. 

Take the top off. I can't hold this whole thing. 
Okay. 

Pilot's ... check. 

Everything looking good, Gemini 12. 

Okay, we're down to the last latch. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:36 A. M. CST 

Tape 165, Page k 



S/C - tail off still warm in here. 

HOU About 19 minutes to sunset. 

S/C garbled 

HOU Take your time. 

S/C Okay, we'll pressurize with the ELSS shortly. 

LOVELL Okay, that checked out. 

ALDRIN GARBLED 

ALDRIN Would you believe both the penlights came back 

with me? 

ALDRIN Never thought they'd make it. 

Now all that remains is to see that S-10.... 

with the tether comes loose. 

LOVELL You let the ELSS didn't you, Buzz? 

ALDRIN Yeh, number 9- 

LOVELL Bypass normal. 

HOU Okay. 

LOVELL Oh, can you get this off? 

ALDRIN We're going to have to elbow to elbow in it. 

Okay, I think it's in the off position. 
HOU Gemini 12, Houston Cap Com. One minute to LOS. 

New EVA record. Beautiful job. 
ALDRIN Thank you. 

LOVELL Okay, I'm going to turn off the repress now. 

Can you get the package in now? 
ALDRIN What, the ELSS? 
LOVELL Can you up? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:36 A. M. CST 



Tape 165, Page 5 



ALDRIN 



Might as well. Okay, .... 



LOVELL 



Okay, good. Okay, repress coming off now. 



Stand by. Take it away. 



ALDRIN 



Cabin's to about 3 quarters of a pound, 



30 seconds. Eyeballs 



LOVELL 



Okay, pressure reads normal. 



Gemini Control Houston, .we're out of range of Bermuda now. 
The hatch is closed on the Gemini 12 spacecraft and our preliminary 
data indicates we've had a highly successful umbilical EVA today. 
This is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, 11:^9 am CST 

TAPE 166, 
PAGE 1 



Gemini Control Houston, k5 hours 2 minutes into the fflissl&n 
now. The Gemini 12 Spacecraft ifi now over Canary and we'll 
standby for any conversation with the crew. 



SC Feels like it might be but.. 

SC That could be perspiration. 

Carrying to much water. 
ALDRIN Perspiration. 

HOU Canary Cap Com, Houston Flight, I didn't 

copy his last did you? 
CYI Okay, standby 

Cabin pressure is 2. (garbled) at this point. 
HOU 2 point what? 

CYI 87. 
HOU Roger. 

CYI Gemini 12, Canary Cap Com. How is the repress 

coming? 

LOVELL Roger, pretty good we're at 

ALDRIN About 3. (garbled) psi. 

CYI Roger copy. 

We're reading same on the ground at this time. 
SC Ready for an exercise. 

Command Pilot just volunteered. 
LOVELL What's the pressure now? 

ALDRIN 2.6 

HOU Canary Cap Com Houston Flight. What is his 

cabin pressure now? 
CYI Standby one. Getting a cam on it right now. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER *3, 1966 „ 11 : 1+9 am CST 

TAPE 166, 
PAGE 2 

HOU Okay. 

CYI 3.68 

HOU 3.68, thank you. 

SC (garbled). 

SC What's the pressure. 

SC j Coming up to k. 

SC Pressure is now 3.8. 

SC (garbled) 

SC Okay, I have it. 

CYI Canary, 12 

CYI Go ahead 12. 

CYI Gemini 12, Canary go ahead 

CYI Gemini 12, Canary Cap Com go ahead. 

HOU What's his cabin pressure Canary? 

SC ....all right we're down to about 1000 pounds 
now. 

CYI U.97 

HOU Roger H.97 

S/C It's coming up a half a pound 

CYI Now 5.29. 

HOU Say again. 

CYI 5.29 

HOU Copy. 

S/C .... see above .... 

CYI Now 5.61 

HOU Roger . 



GEMINI 12 MISSION COMMENTARY , 11/ 13/66 , 11:^9 a.m. 

TAPE 166 
PAGE 3 

CYI Gemini 12, Canary Cap Com, did you call. 

S/C Gemini 12, go ahead. 

CYI No, did you call us down here. 

S/C Roger, AS a matter of /. intere SWiaries, We havte 

just trying to repressurize the cockpit and 

.were 3 n ,xn the ElBS . 

we / - using emergency OJ to repressurize 

and my eyes began to fSm*rV they , " : 

burn very badly until we got the pressure 

up. I went to to see if it would 

stop it, but it didn't. There is & faint 

odor In .my suit j-.outtl couldn't tell exactly 

what it was. As soon as I opened up the 

visor the stickness and smartness of my eyes 

went away. 

CYI Okay, how do they feel now. 

S/C They are feeling okay now. It felt at first 

like a smog or "pax* eviration was in my eyes. 
CYI Roger, I copy that. 

S/c And as I tried to point the bars, the perspiration 

got worse. 

CYI Okay, I understand they have cleared now and 

you are feeling better now, right. 
S/C Right 

CYI Okay, we got about a minute to LOS there and we 

will be standing by. 
S/C Okay. 

CYI Cabin pressure 5. 6l and holding. 

HOU Roger 

LkkkiLkk-il-. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:49 a.m. TAPE 166 

PAGE k 



CYI Did you copy that about his eyes smartting. 

HOU Copy. 

CYI Okay, he is back on flow now. 

HDU Okay 

CYI Canary LOS 

KNO Kano remote. 

Canary local. 

Good job. 

HOU Gemini 12, Houston Cap Com through Kano - over. 

S/C Go ahead, Houston 

HOU Roger, Gemini 12, we suggest you go off vox ? 

and back to "push to talk" . 
S/C Say again. 

HOU Gemini 12, Houston Cap Com suggest you go off 

vox and go back to "push to talk. 
S/C Will do. 

HOU Be sure your cabin is 5.6. Looks mighty fine 

on the ground, real nice Job. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 11:59 a.m. Tape 167, Page 1 

Gemini Control Houston, we are still monitoring our pass over 
Kano, no conversation at this time. We have been advised that the 
hatch open time that we read here in Mission Control was 1+2 hours, 
U6 minutes even, Ground Elapsed Time, slightly ahead of our initial 
schedule, and the hatch locked time read here was kk hours, 55 
minutes, 25 seconds and as Bill Anders had advised the Gemini 12 
crew, Jim Lovell and Buzz Aldrin, this is a new EVA record. 
Continuing to stand by, this is Gemini Control Houston. 

This is Gemini Control Houston, 1*5 hours, 15 minutes now into 
the flight of Gemini 12. We are at the tag end of our Kano pass 
now and no further conversation is expected with the crew. We will 
shortly be going out of range with the Gemini 12 spacecraft. 
The record established this morning, by the way, with Astronaut 
Buzz Aldrin, represents a cumulative record which includes yes- 
terdays standup EVA, so at U5 hours, 16 minutes, this is Gemini 
Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 12:09 p.m.Tape l68,Pg 1 

This is Mission Control Houston, let's join the conver- 
sation that's in progress between spacecraft Gemini 12 through 
the Tananarive voice remoting station. 
S/C Garbled 

CAP COM I'm sorry, 12, the com isn't too good, would you 

say again slowly, please? 
s/c Roger, I've noticed. .. .circuit breaker was opened, 

I think that was accidentally: done during ingress, 

no problem. 
CAP COM Roger, we copy. 

12, Houston, when you have a chance, if you remembe 

did you get much roll when you were doing your 

yaw and direct? 

Lovell That's affirm, Houston, when we started to yaw 

we did a roll. 

CAP CCM Houston copied, thank you. 

12, Houston, you don't have to acknowledge, but 
I'd like to talk to you a minute and say that we 
see no problem with the tether exercise in rate 
command, however, we would like for you to turn 
the number 2 and number k circuit breaker off and 
the reason for that is if we have a cold problem 
every time you flow monopropellant you would con- 
tinue to keep it cool and possibly by leaving 
them off for a while, and in the sunshine they 
warm up we might get them back later. Over. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 12:09 p.m. Tape l68,Pg 2 

Lovell This is 12. I understand you see no problem. I 

understand to turn circuit breakers 2 and k ... 

CAP COM That's right, because if you flow propellaht out 

of them and there's no firing, they'll just get 
colder, and this way you won't flow^any propellant 
out of them, and if there is a freezing problem 
in the solenoid area they may warm up eventually 
and we'll check them later after the tether. 

Aldrin Roger 

CAP COM Gemini 12, we have about 30 seconds to LOS. 

Standing by. 

This is Mission Control Houston, U5 hours, 30 minutes and 
9 seconds after liftoff. We have had loss of signal from the 
Tananarive voice remoting station, we'll be coming up over 
Carnarvon, Australia in approximately 7 minutes from this time. 
Meanwhile the change of shift press conference should begin 
in approximately 15 minutes, at 12:30 CST. Participants in the 
press conference will be Mr. William Schneider, who is Gemini 12 
Mission Director, Clifford Charlesworth, the Green Team Flight 
Director, Dr. Charles A. Berry, who has been on the medical, 
aeromedical console most of the morning during the umbilical 
EVA, and Gene Cernan who is Gemini 12 backup pilot, who has been 
monitoring EVA from the spacecraft communicator console . At 
1*5 hours, 31 minutes and 10 seconds after liftoff, this is Mission 
Control. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY , ll/l3/66, 12:2k p.m. TAPE 169 

PAGE 1 



This is Mission Control Houston. The Carnarvon Australia tracking 



station has had telemetry and ac-aid contact with spacecraft 



Gemini 12. As yet the spacecraft communicator at Carnarvon 



Jim Fucchi has not put in a call to the crew, and now he is 



checking the various ground readouts on the spacecraft con- 



ditions. We will standby for him to put in a call to the crew. 



This particular pass/r/, c Carnarvon station will last approx- 
imately eight minutes and 17 seconds.. Mission stands at 
1*5 hours, 38 minutes, 15 seconds. Still quiet on the air- 
ground over Carnarvon. He is putting in a call now, let's 



join them. 



CRO Gemini 12, Carnarvon. 

S/C Carnarvon, 12. 

CRO Okay, would you go to Command on your TM 

switch please. 

S/C Roger - TM is command. We may have uncovered 



what the problem was with Jim's eyes. The 

camera that came from the adaptor, if you 
recall, stopped working after originally 
reported as working. It didn't take any film 
at all, and seems to have over -heated because 
I guess we turned it on while the sun was 
still up. What we would like to know - we 
are going to store it in a plastic bag, and 
we would like to know if anybody on the ground 
has any desire to have the over-heated camera 
back, or shall we jettison it tomorrow. 
HOU Standby 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 12:2k p.m. TAPE 169 

PAGE 2 



CRO Okay, standby. on that end. 

I am going to ship you up k- TX. 
CRO Okay, we have a purge. Over this section we 

want to purge section 1, then section 2, 

thirty seconds on the 0 2 . 
S/C Okay, how many minutes do we have. 

CRO Oh, we have a little while, about six. 

HOU About six. 

S/C Okay, understand fuel cell purge, which 

section first. 30 seconds Og. 
CRO Right, Section 1 and then section 2. 

ASC Carnarvon, ASC - have you got C-band track. 

CRO That's negative. 

HOU Carnarvon, we would like to have C-band track, 

see if you can get it. 
CRO I'll go down and take care of that myself. 

HOU Okay. 

HOU Carnarvon, do you have S-band track. 

CRO That's negative. 

HOU Roger. 

CRO We have a C-band skin track. 

S/C Fuel cell purge is complete. 

CRO Roger 

CRO Just a short flight plan update in about seven 

minutes at U5:50:00, we want a gyrocompass to 
000 that's Agena 01800. 

S/C Understand seven minutes gyrocompass 000, and 

Agena 01800. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 12i2k p.m. TAPE 169 

PAGE 3 



CRO That's affirmative. Now replace your cryo switch 

to please. 
HOU Carnarvon, Flight. 

CRO Go ahead. 

HOU Contingency Delta on the Agena please. 

CRO Roger. 

CRO Okay, you can go back to 0^ thank you. 

S/C Carnarvon, Gemini 12. 

CRO Go ahead. 

S/C Roger - Our digital clock stopped at k5:lk:00 

have you got the time there. 
CRO Okay, I'll give you a mark at U5:^5:30. 

S/C Okay, standby, it will take a while handle it. 

CRO Okay, you got about thirty seconds. 

S/C We cant't seem to get it to going forward. 

CRO Okay. 

S/C Naw - it won't crank forward or backward, we 

will look into it some more. 
CRO Okay 

S/C We'll shake it around a bit. 

CRO Roger. 

HOU Is SET still carrying on your telemetry - 

Carnarvon. 
CRO That's affirmative. 

HOU Is it in Sink. 

CRO Well, we just lost sight, it was in Sink, I 

checked it when he told me about that clock. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 12 :2k p.m. TAPE 169 

PAGE k 



CRO We have LOS both parameters. Both vehicles and 

all systems were GO. 
And this is Mission Control Houston. During that just completed 
pass over the Carnarvon, Australia tracking station, the crew 
conducted a purge of the fuel cell system. They are still in 
what is called post-EVA period, coming up on an eat period at 
k6 hours, 20 minutes ground elapsed time during the upcoming 
pass over the states. At 1+5 hours, k7 minutes and 1 seconds 
after the liftoff this is Mission Control. We now join the 
press conference in progress. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:23 PM CST TAPE 170 

PAGE 1 

This is Mission Control f Houston at H6 hours 35 minutes and 
hO seconds after lift-off. We have just had loss of signal 
through the Antigua station of the Eastern Test Range. At the 
end of this state side pass, we have an accumulation of more 
than 20 minutes of voice air-to-ground tapes beginning back at 
the Canton Island voice remoting station through the Hawaii 
station and we have just completed state side pass. Let's go 
back and listen to those tapes now. 
HOU Canton go remote. 

CTN Roger. Canton remote. 

S/C Say, do you us . . .Agena around. . .spacecraft in 



the other direction. 



HOU 



That is affirmative spacecraft SEF. 



S/C 



We are having a hell of a time when we place the 



spacecraft in an inertia! roll ... to get this 



. . .we are all out of 



We are going to let it 



go we get the spacecraft straightened .up and then 



we will work on it. 



HOU 



Roger. And would you check your tone VOX circuit 



breaker there for your clock problem. Have you 



got that straightened out? 



S/C 



That is the first thing we said... the circuit 



breaker is ... and that doesn't do it. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:23 PM CST TAPE 170 

PAGE 2 

HOU Well, there is two circuit breakers. Electric 

timer and tone locks. 
S/C Well, we checked both of them. 

HOU Okay. And your clock is stuck. Is that 

correct? 
S/C 

HOU Okay, you now have the clock. Is that correct? 

S/C Houston, 12 here. What I meant to say was the 

combination ... we don't seem to be able to 
exercise proper control in rate command or in 
direct with our own attitude system. Now, it 
may be that. . . I think we want to get to a 
particular area. . . 



HOU Roger. 

S/C How do you feel about that? 

HOU Okay, what is your approximate heading right now? 

S/C Well,. .back... 

HOU You say you are upside down? 

Roger, you say you are upside down? Is that 

correct? 
S/C Roger. 

HOU Okay, my suggestion is, if you can roll any where 

near right side up, go ahead to FC-2 and set up the 



GEMINI 12 MISSION COMMENTARY, U/13/66, 1:23 PM CST TAPE 170 

PAGE 3 

HOU commands for zero zero zero and forget it. 

S/C Okay, we will do that. I think the problem 

is the combination... when we roll one way 
we lose control we seem to lose control and 
when we put the control the other way, we 
lose ... 

HOU Yes, I can understand that. Also we looked 

at some vehicle rates for your combined weight 
and you can, if you have 8/lOths of a degree per 
second, in yaw, why the whole combination in PC-1 
would go 360 degrees before it would stop with 
the attitude thrusters. So we feel that the 
problem is just getting just letting it sit 
there long enough for it to right itself total 
combination with the low gas pressures. 

S/C Okay. . . 

HOU That is affirmative. And so if you get it 

anywhere near upright so the horizon sensors 
see some of the earth, and set up FC-2 0000 
with gyro compassing I think you will find that 
it will eventually come around. It may take a 
while, but everything looks good here. 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 1:23 PM CST TAPE 170 

PAGE h 

S/C 

HOU We have about 3 minutes and we are standing by. 

We will see you over the States. 

12, Houston. 1 minutes until Hawaii acquistion and 
we will leave you until Hawaii. 
S/c Roger. We have the commands setup now and we are 

HOU Okay, just bear with it. It is just that is so 

darned heavy that it is just not going to move 
very fast for you and it will overshoot the dead- 
bands. 

S/C Am reading about 28 percent... 

HOU Roger. Understand 28 percent attitude gas. 

S/C That is 2 0. 

HOU Two zero. Roger. 20. You guys did real well. 

You get things squared away and take 'your time 
and rest. We have plenty of time here. 

HOU Canton local. 

HAW We have got him here at Hawaii. 

12, Hawaii. Standing by. 

HOU Hawaii, Flight. 

HAW Roger. 

HOU GC would like to know if the circuit breaker 2 and h 

are off. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:23 PM CST TAPE 170 

PAGE 5 

HAW We concur on the ground. We have 2 and k off. 

HOU Okay. 

HAW We have one question. We are looking at the 

dome here and it looks like it should be somewhere 

around 800 psi on cyro 2. 

12, Hawaii. I am sending you TX. 
S/C It looks like we are down to about 15 percent 

attitude gas on closer inspection. 
HAW Roger. 
HOU Hawaii Com, Flight. 

HAW Go, Flight. 

HOU Tell them when it gets close to right, go to FC-1 

and be sure he puts k60 gains low in. 

HAW 12, Hawaii. When you get close to being the 

right attitude go to FC-1 and make sure that 
you do get 1+60 in. 

S/C Roger. 

HAW That is gains low. 

Flight, did you copy that okay, that he was 
showing 15 percent on attitude gas on closer 
inspection. 

HOU Roger, we copied 15 percent. 

HAW Roger. 

HOU What is the pump ^configuration, Hawaii. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:23 PM CST TAPE 170 



PAGE 6 

HAW They have got primary A secondary B. 

HOU Tell them to go to both A's. 

HAW Okay. 12, Hawaii. We would like to have you to 

go to both A pumps on. 
S/C Roger. Thank you. 

HOU Hawaii Flight. Continuancy India on the 

Agena, please? 
HAW We sent one. Do you want another one? 

HOU Okay, we want another one at LOS. 

HAW Okay. 

S/C We are in flight control mode 1, now. We overshot 

to the right a little bit. And it looks like it is 
going back. 

HAW Roger, very good. 

12, Hawaii, we will have LOS in about a minute. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:33 p.m. Tape 171, Page 1 



S/C 
Haw 



HOU 
CAL 

CAP COM 



S/C 

CAP COM 

Lovell 
CAP COM 



Roger, very good. 

12, Hawaii, we'll have LOS in about a minute. 
Roger 

...and it looks like the Agena is settling 
down a little. That's 000 on the spacecraft. 
Hawaii has LOS. 
California remote 
California is r emoted 

Gemini 12, Houston standing by at California, 
have about three or four or five items to 
talk to you about, when you have a chance. 
Gemini 12, Gemini 12, Houston, over. 
Go ahead, Houston. 

Roger, I've got five or six items to discuss 

with you when you have a chance. 

Ok, let me get my book out here. 

Ok, the first thing was, did you jettison 

anything that you didn't plan to during your 

EVA for eight purposes here? 

I don't believe so. The waist tethers are gone, 
the handrail is gone. 

Ok. And if Buzz has a chance, could he give us 
an idea as to which flow modes he used on the 
ELSS, we seem to have picked up quite a bit of 
oxygen and we were interested. 



GEMINI 12 MISSION COMMENTARY, 11/ 13/ 66, 1:33 P-m- Tape 171, Page 2 

Aldrin Roger, it was on medium for a Miort while prior 

toeegress, went to high for egrees and I wa6 on 
high for the entire time. 

CAP COM Roger, ok, thank you. And Jim, I gather you didn't 

have any more problems with your lap belt, it 
apparently wasn't hooked up right, is that 
correct? 

Lovell that's right. 

CAP COM Ok, and with regard to the camera, we would like 

to have it back. If you think its causing any 
with fumes 

problems / if you could get it in the right aft 
box and leave it there, if not and its causing 
a problem, go ahead and get rid of it. 

Lovell Ok, we have it in the zipper bag, we'll just stick 

it in the aft box shortly. 

CAP COM Ok, I sorta gathered that you got your fumes in 

your eyes there while you still on the suit loop 
which shouldn't really come from the camera in the 
cabin. 

Lovell You ' re ri ght . That ' s true . Unfortunately . . . 

it wasnt the oil film. 
CAP COM Ok, fine. 

Lovell Perspiration going into the eyes, digging into 

the eyes, and the more you blink, the more you 
water, the more it gets. Now I don't know whether 
this is a natural condition or if this is something 
around the eye and there would be tears that causes 



GEMINI 12 MISSION COMMENTARY, 11/13/66,1: 33p.m. Tape 171, Page 3 



Lovell 
CAP COM 



Lovell 
CAP COM 



HOU 
GYM 
CAL 



irritation. 

Ok, fine. Do you want me to sync your GET 
for you. 
Love to. 

Ok, why don't I give you a while to set up the 
clock. Why don't you set it up for U6 hours, 
20 minutes, 00 seconds and you have about 2 and 
1/2 minutes to go. 
Roger, k6, 20, 00. 

Ok, and in the meantime, in order to save 
electrical power, when you are satisfied .in 
your tether exercise that you no longer need 
your local vertical needles, why don't you just 
plan to turn your computer off. 

We think we ought to discuss this attitude control 
problem a Uttle bit before we go leaping into 
this tether exercise. I'm not convinced that 
for one we can pitch the Agena down and maintain 
a straight down attitude. 

Ok, we were going to talk to you about that in a 
little bit, we were discussing it right now ourselves. 
Guaymas remote, California local. 
Guaymas remote 
California local 



GEMINI 12 MISSION COMMENTARY, II/13/66, 1:33 P.m. Tape 171, Page k 

CAP COM Ok, you've got about 1 and a half minutes to 

clock sync and Buzz, do you remember whether 
the ko8 blume was deployed correctly when you were 
out? 

Aldrin No, I... its on the bottom if I'm not mistaken. 

I didn't get a chance tolook down there. 

CAP COM Very good, thank you. You might could consider 

while we are discussing the thruster problem,! 
you can use the Agena to pitch down with, of course, 
and if you are not familiar with that, I think 
you have it in the book there, we can work some- 
thing out by pitching, using the Agena control 
system to pitch you down, we're discussing 
exactly your control problem right now and we'll 
have an answer for you. 

Aldrin Yeah, ok. We should station keep after we 

undock. 

CAP COM Yeah, we are working on that. Also, 12, did you 

notice any tendency to float up any with the ELSS 
on? When you were standing in the cockpit? 

Aldrin Negative . 

CAP COM Ok. 

Aldrin I'll expand on that later. 

CAP COM Fine. Ok, ten seconds to clock start, 5 seconds, 

2, 1, Mark. The time is h6 20 00. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:33 P.m. Tape 171, Page 5 



Lovell 
CAP COM 



Lovell 
CAP COM 



Lovell 
CAP COM 



Lovell 
CAP COM 



Lovell 
CAP COM 



Roger. 

Ok, I'll give you a hack at 1+6 20 15 to check 
it. Stand by. Mark. 1+6 20 15. 
Roger, thank you. 

Okeydoke. I have a couple of updates here 
for you if you are ready to copy them. 
Roger, go ahead. 

Ok, 1+6 20 00 to 1*7 00 is an eat period, if you 
are stowed, and we have down here the sunrise 
time for the start of the tether exercise as 
1+7 18 00. We would like a fuel cell purge at 
1*9 13 00, it will be at Hawaii with a cryo readout 
and it will be section 2, then section 1 and I 
have a node update for you. 

Hang on a moment. (Pause) When do you want the 
fuel cell purge to start? 

1+9 13 00 - it'll be at Hawaii and they'll call 
you. 

Ok. Ready for the node. 

Ok, 1+6 00 06 node, a rev 29 17 0.9 West, right 
Ascension 10 hours 51+ minutes. 
Roger, understand. 

12, one other question, for you separation 
maneuver which will be a posigrade burn of 
approximately 6 feet per second horizontal, 
what's your druthers? Do you want to use the 
aft firing thrusters or the forward firing 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:33 P-m. Tape 171, Page 6 



Lovell 
CAP COM 



CAP COM 
Lovell 



thrusters, we'll pass it to you either way. 

We'll use the aft firing thrusters. 

Roger, aft firing thrusters posigrade. 

12 Houston, with regard to the thrusters, what 

we would like for you to do is to turn the 

number 2 and the number k circuit breaker back 

on, - the rol logic switch in the normal position, 

with yaw, and go ahead and undock that way and 

we think that you should have fairly good attitude 

control at that time in rate command, and of 

course if you are not satisfied with it, why 

you can always get rid of the tether. 

Well, this is a change in our procedures, Houston. 

We were going to start with the Agena vertical, 

do you want us to leave it horizontal then, or 

what. 

No, let's see. You were going to fly it down there 
with the Gemini, and you can fly it down there with 
the Agena, and stop it; and then undock in rate 

Ok, I was just curious about our Agena attitude 

gas. 

Roger . 

Houston, 12 here. We didn't get what you would 
call an acceptable rate command before, rate 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:39 P-m. Tape 171, Page 7 

command capability and I'm wondering if maybe 

we hadn't ought to check and see if we have 

lost another thruster. 
CAP COM Ok, let us kick that one around here for a 

minute and we'll talk to you again. 
Aldrin Ok, but for sure, when we went to rate command 

there, it wasn't acceptable and it wouldn't 

stop us, is what I am trying to say. We still 

had a residual rate. 
CAP COM Roger. Well, of course you are going to have 

2/lOths of a degree per second and at that time 

you had the number 2 and number h circuit breaker 

off, and even monopropellant 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:^3 PM CST TAPE 172 

PAGE 1 

HOU number 2 and k circuit breaker off and even 

mono-propellant or part-by propellants you 
are going to get some help from them and that 
might change the picture a little. I agree 
with you when you are on that heavy burn, you 



don't get a lot of good response to begin with. 
S/C Roger. 

HOU 12, Houston. Your wives are out here and they 

are real happy with your show this morning. 
ALDRIN Roger . 

LOVELL Roger . 

HOU 12, Houston. 

S/C Go ahead. 

HOU Okay, I am afraid that if you start checking 



thrusters on the Agena you get that combination 
moving again, the consensus of the opinion down 
here is let's get set up to do it and then you 
can use the pitch mode on the Agena to get pitch 
down. You go ahead and dock. Now, leave the 2 and 
k circuit breakers on and if you aren't too happy 
with the control mode after you undock you might 
go ahead and change your roll logic switch to the 
other one, but one thruster may be a little bit 
better than the other and it would give you a 
a little better control " that way, say for roll 
and if you are not satisfied with it, why just 



GEMINI 12 MISSION COMMENTARY , 11/13/66, 1:43 PM CST TAPE 172 

PAGE 2 

HOU go ahead and get rid of the docking bar and then 

you can go on back away. You can go ahead, if 
you have got a fairly slack tether out there you 
might give it a couple of tries and go right back 
to rate command again. 

S/C Roger. That is exactly what we are going to do. 

We had control troubles, we are going to jettison. 

HOU Very good. We concur. Okay 12, Houston. When 

you use the Agena to pitch why remember to get 
k20 in there pitch rate low so you have the one 
and a half degree per second pitch rate rather than 
the 3 degree per second. 

S/C Roger. 

GTI LOS Turk. 

This is Mission Control Houston again. Let's join the conversation 

in progress through the Tananarive voice remoting station. 

S/C We are trying to get the spacecraft down now. We 

are pointing straight down. 
HOU Roger. I won't bother you. 

S/C Ready for update. 

HOU Roger. This is for Bravo GETRC 50 plus 26 plus 21. 

R RET 1+00K 20 plus 1+5 RETRB 26 plus 10 roll left 80, roll 

right 100. Area 33-^ Alpha GETRC 52 plus 02 plus 21. 
RET 1+00K 20 plus 15 RETRB 25 plus 3^ roll remains the 
same weather is good in both areas and this is with 



GEMINI 12 MISSION COMMENTARY , ll/l3/66, 1:^3 PM CST TAPE 172 



PAGE 3 

HOU a separation maneuver. Over. 

S/C Understand. Say again for RETRB 3^-^ A. 

HOU RETRB 25 plus 3U. 

S/ C Roger, understand. 

HOU How are you coming with getting it pitch down? All right. 

S/C Roger. We are pitched down all right. 

HOU Very good. 

S/C Houston. 
HOU Go ahead. 

S/C We went through the proper procedures and got 

90 degrees down and we are in flight control mode . . 

HOU Understand. You are in FC-2 and you are slowly 

drifting. 

S/C Right. ...we back up we went through the procedures 



as described and we headed down hill $K) degrees 
down and stopped and then we went to flight control 
mode 2. Do you read me. And we are slowly coming 
back up. 

HOU Roger. If you pitch down 000 you should be geo 

rate normal. Roger that is right geo rate reverse. 
And you say it is drifting back up? 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 1:U3 PM CST TAPE 172 

PAGE k 

HOU 12, Houston. 

TAN Tananarive LOS. 

And this is Mission Control Houston. We have had loss of signal 
at the Tananarive voice remoting station. And also the accumulated 
backlog of air-to-ground voice tapes during the recent state side 
pass has been rerun. Upcoming in this mission is the 4th undocking 
and the start of the tether exercise. This will occur at kj hours 
18 minutes ground elapsed time, which is about 13 minutes from now 
over the Carnarvon station. Tomorrow's standup EVA exercise will 
occur at the EVA preparations will begin at 6l hours 30 minutes and 
the hatch will be opened at 63 hours and 30 minutes ground elapsed 
time. The particular star fields which will be photographed during 
this EVA will be any daytime stars that can be seen plus the star 
Orion and portions of the Milky Way. On today's umbilical EVA, 
the EVA actually began at k2 hours k6 minutes ground elapsed time 
and occurred right at apogee of l6l nautical miles. We will be 
acquiring the Carnarvon Australia tracking station at in approximately 

6 minutes. We will come back up at that time and listen in on the 
conversation between Carnarvon and the crew of Gemini 12 at 1+7 hours 

7 minutes and 1 second after lift-off, this is Mission Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/13/66, 2:00 p.m. TAPE 173 

PAGE 1 

This is Mission Control Houston at kl hours, 12 minutes and 
5U seconds after liftoff. Should be crossing the acquisition 
range on the Carnarvon, Australia tracking station momentarily 
We will standby for acquisition signal and voice contact be- 
tween the spacecraft communicator out at Carnarvon, Jim Fucchi 
and the crew of Gemini 12. We are some five minute away from 
the fourth undocking and the start of the Tether extension. 
Standing by for Carnarvon. This is a fairly high elevation 
angle pass, almost over the Zenith of the Carnarvon station. 
Let's join the conversation at Carnarvon. 
S/C Go ahead Carnarvon. 

.pitched 

CRO Okay, when you get her /.' down there, you 

have to put on that G 0 rate in order to keep 
that thing going around, that's command 351, 
we show it OFF on the ground. 

S/C Roger. 

HOU And make sure it is. reversed Carnarvon. How 

does it look to you. 
CRO It is in reverse Flight. 

HOU Okay. 
CRO Sending you a TX, 12. 

S/C Roger. 
HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU What attitude are you on, in the platform. 

CRO Okay, we are showing 27000. 

HOU Okay. 



GEMINI 12 MISSION COMMENTARY , H/13/66, 2:00 p.m. TAPE 173 

PAGE 2 



HOU Carnarvon, would you please send us a couple of 

summaries, Gemini and Agena Main. 
CRO Roger 

HOU Contingency india Agena please. 

CRO Roger 

HOU Carnarvon from Flight 

CRO Go ahead 

HOU Okay, just standby out there Jim unless he 

calls you. 
CRO Okay. 

CRO Okay, he was is FC-2 when we saw him and he - 

the G 0 rate was off, and he turned the ACS 
OFF and that kinda stabilized it a little bit. 
Now he has the ACS back ON again. 

HOU Okay, and how is G 0 rate. 

CRO G 0 rate is on. 

HOU Okay, and it is reversed? 

CRO That is affirmative. 

HOU Okay - sounds good. 

S/C Carnarvon, 12. 

CRO Go ahead 

S/C Roger, we are in a verticle position. We are 

going to wait until we get a light on the 
horizon or a light in the background before 
we undock. 

CRO Okay - does it seem to be holding pretty good. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 2:00 p.m. TAPE 173 

PAGE 3 



HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU You can tell them not to acknowledge - we want 

to pass on that he may see some extra pro- 
pellent usage out of the Gemini because of the 
control situation. 

CRO Okay. 

CRO Is that because of this two and four circuit 

break. 

HOU That's right. 

CRO Okay. 

CRO Gemini 12, this is Carnarvon, no need to 



acknowledge this, but for your information, 
you may see some extra propellant usage from 
the Gemini because of the control situation 
where upside down with those circuit breakers 
open on two and four. 



HOU No, they are closed, the circuit breakers are 

closed. 

CRO With them closed. 

S/c Roger - we are going to leave them closed as 

per instructions. 
HOU That's right. 

CRO Okay. 



GEMINI 12 MISSION COMMENTARY , 11/13/66, 2:00 p.m. TAPE 173 

PAGE k 



S/C 



It will only be a minute to wait now until 



we get a light on this. 



CRO 



Okay. 



HOU 



Carnarvon, Flight. 



CRO 



Okay. 



HOU 



Gemini OBC please. 



CRO 



Okay 



CRO 



We've got LOS Gemini. 



And this is Mission Control Houston *e havte had loss of 
signal at the Carnarvon, Australia station. At LOS the 
Gemini and Agena were still on docking configuration and 
both spacecraft all systems were GO. The crev were holding 
a verticle attitude, still docked. The Agena pointing down 
toward the center of the Earth. They were waiting for a 
lighted horizon before actually undocking and beginning the 
Tether exercise and in an attempt to establish the gravity 
gradient. We will come back up again at the Canton Island 
voice remoting station and continue on through Hawaii and 
the next stateside pass. At hi hours, 22 minutes and 35 sec- 
onds after liftoff, this is Mission Control Houston. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 2:20 pm CST Tape 17b 

Page 1 



This is Mission Control Houston, we're at kl hours 33 minutes 
and 55 seconds after liftoff coming up now over the Canton 
Island voice remoting station. Canton does have acquisition 
of the spacecraft. We'll stand by for Pete Conrad to put in a 
call to the crew and see if, in fact, they have undocked and have 
begun the tether exercise. Still nothing but carrier noise. 
This Canton Island pass will continue on through the Hawaii pass. 
Let's join the conversation. 



CONRAD 12 Houston at Canton, standing by. 

S/C Roger Houston, 12 here. This is Aldrin what do 

you want? If you want to have some fun try doing 
this with two attitude thrusters out. 

CONRAD Roger. 

S/C I'm at the end of it now. 

CONRAD Say again. You're broken up. Slowly please. 

S/C We're sure having to do a lot of translation. 



The Arena's beautiful, it's just standing there nice 
and vertical and everything is really swell and nice 
there was no jerk or nothing, the Agena went along 
beautiful. 
CONRAD Very good. 

S/C We simply don't have any spacecraft control. 

CONRAD I see. 

S/C Even if I try to translate to the (garbled) 



GEMINI XII MISSION COMMENTARY 11-13-66 2:20 pm CST Tape 17U 

Page 2 



CONRAD Roger. 
S/C (garbled) 

CONRAD Say again. You say your rate command doesn't work? 

S/C Rate command is firing it won't stop any 

thing. 

CONRAD 12 Houston, you'll be coming in to Hawaii in about 

30 seconds and you'll have better com. They'll be 
talking to you. 

S/C Okay Pete. 

HOU Hawaii flight. 

HAW Flight Hawaii 

HOU Send us a Gemini Alpha, a couple of time during 

your pass and a couple of Gemini mains. 
HAW Roger, will do. 

CTN Canton local. I think we've lost contact with the 

spacecraft . 
HOU Say again. 

HAW We have initial contact at the present. 

HOU Okay, and if he contacts you after you're standing 

by, after PQI , it is convenience. 
CTN Okay, it's local. 

HAW We're still pretty ragged at the present. 

Gemini 12 Hawaii standing by. 
S/C Roger, Hawaii, this is 12. We aren't having too much 

success in maintaining position with the Agena. 
HAW Roger, understand. 



GEMINI 12 MISS Eft COMMENTARY i ■ * 11-13-66 2:20 pm CST Tape ljk 

Page 3 



HAW At your convenience we'd like to get a PQI from 

you. 

S/C Roger, that's 35 percent. 

HAW Roger, thank you. 

S/C Hawaii here's the situation again in case you did 



not get it, at Canton. The tether deployment was 
fine we let it come out and the velcro hung it up 
a. little bit, thrust ers managed to get it unstuck. 
It hung ■■up just slightly at the 50 foot marker and 
we got it undone. We'd be in great shape right now 
if we had a control system. The Agena is fine, 
the tether is out, we are hardly moving, except that 
we can't control attitude. Everytime I try to con- 
trol translation we change our attitude and we have 
no good control over it. 



HAW Roger. 

HOU Hawaii from flight. 

HAW Go flight. 

HOU Has he tried any other control modes? 

HAW Have you tried any other control modes? 

S/C Roger, we have tried rate command, rate command 

fires continously but will not stop the roll. 
HAW Rog. 

S/C We switched back and forth the roll (garbled) and 

that helps . 
HAW He's in direct right now. 

HOU He 's ; ifiidirect right now? 



GEMINI 12 MISSION COMMENTARY 11-13-66 2:20 pm CST Tape 17k 

Page k 



HAW Affirmed. 

HOU Okay. And if that doesn't work you might ask him 

if he wants to try pulse? 
HAW Flight suggests trying pulse. 

S/C Trying pulse? We've tried pulse. 

HAW Roger . 

S/C We've tried pulse, we've tried direct, we've tried 

recommand. We just don't have any roll control 
that's what's wrong Hawaii, We have tried to get 
roll by pitching yaw but we just can't do it. 

HAW Roger . 

HOU Hawaii from flight. 

HAW Yeah, go flight. 

S/C We're thinking about just letting it go and hoping 

that maybe whatever we've got in will hold it. 

HAW Okay, that's what flight was just suggesting here. 

S/C The Agena is in perfect shape, it's just beautiful 

and just perpendicular- and if we only had a control 

system I'm sure we could do this thing much better 

than even in the simulator. 

HOU Yeah, „ we're showing you're hanging in there in good 

' feels 

contention. Ask him how .he y about just letting 
the roll go. 

HAW Yeah, we're talking right now. ..... (faded out) 

HOU Hawaii? 
HAW Go flight. 

HOU Ask him how he feels about just letting the roll go? 



GEMINI XII MISSION COMMENTARY 11-13-66 2:00 pm CST Tape 17^ 

Page 5 



HOU And not trying to control it. 

HAW Rogo That T s what he was saying wasn*t it? 

HOU Not exactly. Ask him that question and see how 

he responds. 
HAW Okay we're picking up some now. 

Okay, what we would like to have you do if you 

are willing, is to just let the roll go and see 

if it will damp out after a while here. 
HOU He isn't going to damp out Hawaii, he's just going 

to let the roll go and just worrying about pitching .... 
S/C Roger. We've lost sight of the Agena. As long as the 

tether doesn't wrap around it we'll do it. 
HAW Okay. Flight doesn't think you will really damp out 

in roll. 

S/C Well, we've stayed well above him now for quite a while. 

We are out in front of him just a little bit. 
HOU Hawaii from flight. 

S/C Yeah, we're also getting a little low on ACS gas 

pressure. 
HOU HAWAII from flight. 

HAW Go flight. 

HOU What we want to tell them is try to control it in 

pitch and yaw as best he can. 

S/C 10 to 15 feet maybe ten feet of slack 

HOU Try to control it as ... (interrupted) 

S/C Looks like Hawaii is pretty today 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/13/66, 2:30p.m. CST Tape 175, Pg 1 



Lovell 
Haw 



HOU FLT 
Haw 

HOU FLT 



Lovell 
Haw 

HOU FLT 
Haw 

HOU FLT 
Aldrin 



Looks like Hawaii is pretty today. 
It sure is. Try to control in pitch and yaw 
and just let the roll part of it go if you can 
do that ok. 

Well, when we put it in pitch and yaw all we get 
is roll. 

Ok. we show that the Agena on the 

tether that way. 
Hawaii from Flight. 
Go Flight. 

Suggest flight control mode2 on the Agena, 451 
and 460 if they can get. 

We'd like to have you go to Flight Control Mode 
1 on the Agena if you could, and include U51 and 
k60 in an attempt to save some of the control gas, 
its getting mighty low. 
Roger, 1+51 and 460. 

U51 and h60 - got a map on both of them. 

Rog, thanks. Can you confirm that on the ground 

Hawaii? Flight Control 1? 

That's affirm, Flight. 

Ok. 

We are still and don't seem to be getting too 
much further ahead, we may possible have to go 
to (garbled) 



GEMINI 12 MISSION COMMENTARY, II/13/66, 2:30 p.m. CST Tape 175, Pg 2 
roll rate 

Haw (garbled)/ 3-89 feet here on the ground. By the 

way it is a decrease, too, Flight, since our 
acquisition. 

HOU FLT . . say again 

Haw We'll have LOS in about a minute here. 

That is a decrease since our acquisition. 
HOU FLT Ok, in roll rate. 

Haw Affirm. Pitch ie staying in there pretty good 

and yaw fluctuates back and forth, however, he 
doesn't look like he's getting too bad out of 
yaw. 

Hawaii has had LOS out of both vehicles. 
And this is Gemini Control. We've had loss of signal from the 
Hawaii Island Tracking station. During the conversation between 
Hawaii and Gemini 12 it was revealed that they are having a small 
amount of difficulty in maintaining Gemini attitude, however, the 
Agena target vehicle. is hanging in quite well in a vertical position, 
looking very beautifully, as the crew mentioned. Their propellant 
quantity remaining at the present time on the Oams fuel of Gemini 12 
is 35$. Part of the attitude control problem has to do with the 
two thrusters being out and they are getting a certain amount of 
cross- coujking when they attempt to take out any roll motions. We 
are coming up on a stateside pass now, should be acquiring in 
California at the present time. We'll stand by to join the con- 
versation through the stateside and Eastern Test Range pass. 



SEMINI 12 MISSION COMMENTARY, 11/13/66, 2:30 p.m. CST Tape 175, Pg 3 

Still standing by for the stateside pass. As yet... now he's 
putting in a call, let's join it. 

CAP COM Gemini 12, Houston at California. 

Lovell Roger, Houston, 12. 

CAP COM How does it look now. 

Lovell Say again? 

CAP COM How does it look now? 

Lovell We are still dni«:'An£i*tle bit ahead and let 

me give you the direction of the travel, a little 
bit to the right. We've stayed ahead for quite 
some while, and I don't know, I think we might 
get ... 

Cap Com Roger 

Lovell We've just about stopped doing anything, just 

about anything we do all goes to.... so we are 
just staying here to see tfiat happens. We have 
a loose tether between the Agena and the spacecraft. 

CAP COM Ok. 

12, Houston, about how many times have you hit 
the end of the tether? 

Aldrin Three - four times. 

CAP COM So it looks like you're just sort of bouncing 

off it lightly. 
Lovell That's right. 

CAP COM It sound s to us down here that you are either 

rotating very slightly or you are captured and 



GEMINI 12 MISSION COMMENTARY, II/13/66, 2:30 p.m. CST, Tape 175, Page K 



Lovell 
CAP COM 



Lovell 
CAP COM 



Lovell 

HOU 

GYM 

CAL 

Lovell 

CAP COM 

Lovell 



CAP COM 
Aldrin 



and it looks to us like you would be alright, 
how do you feel about going into night that way 
and not trying to station keep? 
That's a good decision, I think. 
Ok. During the pass over Texas and the Cape 
acquisition we'll be sending you some DPS loads, 
and we want to do this just to check out computer t 
and we'll call them while we check them. 
Roger . 

And if its alright, I'll give you a call before 
we do it and you can go to prelaunch for us so 
we can look at it. 
Roger. 

Guaymas remote. California local. 
Guaymas remote. 
California local. 
Houston, 12 here. 
Go ahead. 

My only concern, Houston, is the fact that we 
have a very loose tether and its snaking around. . . 
I'm concerned that it might get wrapped around 
some of our antennas on the side of the spacecraft, 
along the end. 
Thank you, copy. 

We are about lying abreast with him in the direction 
of motion now, we've been ahead of him up until now. 
He's off to the right. 



GEMINI 12 MISSION COMMENTARY, 11/13/66 2:30 p^m. CST, Tape 175, Page 5'V 



CAP COM 
Aldrin 



CAP COM 
Aldrin 
CAP COM 



How many feet off to the right? 

Well, it might be, I'll measure it in degrees, 

about kO - k5 degrees. 

Roger, Just keep vatching, you've got quite a ways 
to go before night. 

Yes, I think the big thing is, can we keep below 

the horizon. 

Roger. 

The tether's kind of wrapped around him now. 
Copy 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 2:H6 p.m. CST 

Tape 176, page 1 

Houston Texas remote, Guaymas local 

Texas remote, Guaymas local 
CAPCOM 12, Houston. Would you put your computer to 

pre-launch please. 
Lovell Roger, it is on prepunch. 

CAP COM 12, Houston. Stand by, we are sending you a load. 

Lovell We are going right over you now Houston. 

CAP COM Houston, copy. 

Lovell Almost. If thiB thing is leaning just right, we 

might even get a picture of the Agena and Houston 
at the same time. 

CAP COM Outstanding. 

Lovell BonJ-t keep-.yoy?:-fingers-drossed. 

Aldrin Would you settle for Corpus Christi? 

CAP COM Affirmative 

Lovell Smile down there 

CAP COM Roger we are smiling. 

Lovell I think I got several good shots of the Agena with 

Houston in the background. 
CAP COM Very good. 12, Houston, would you please switch 

the computer to catchup now. 12, Houston, would 

you switch to catchup, the load was good. 
Lovell Roger, we are in catchup. Thank you. 

CAP COM Soger, stand by for a TR. Mark 

Lovell Got it. Houston, it appears that we are slowly 

dropping now and the Agena is slowly rising up 

to the horizonul believe. 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 2: 1*6 p.m. CST 

Tape 176, page 2 

CAP COM Roger, how much slack have you got in the tether? 

Lovell Not too much, we get pulled occasionally but that 

is about it. 

CAP COM If it keeps bouncing off the end of it, I think 

you are safe in going through the night as long 
as you don't get too much slack. How do you 
feel about that? 

Lovell Well, there is slack, Houston, and the slack goes 

back to the back end of the spacecraft. If she 
stayed taut, we would be fine. 

CAP COM What is the rate that you are hitting the end of 

the tether at, once every two or three minutes, or 
less than that or more. 

Lovell Oh we are going real taut, but it is coming 

fairly close. I think that there is probably 
some elasticity. We lucked out I think somehow. 

CAP COM You are saying, that when you get slack in it 

though, you are getting some slack that looks like 
it is getting underneath the spacecraft. You can't 
see the tether, .is that what you are saying. 

Mdtrifi. That is right. For instance, right now we can't see 

the tether or the Agena. It is down below us some- 
place. But itvis obviously pretty close to taut 
because, for example, right now it is wrapping 
around that spacing thing that I put on. It looks 
pretty close to taut right now. 

CAP COM[ OK, that sound familiar. 



\ 

GEMINI 12 MISSION COMMENTARY, 11/13/66, 2:U6 PM CST TAPE 176 v 

PAGE 3 

S/C And, yes, the Agena, it is a good ways away 

from the horizon. 
HOU Roger. 

S/C But there is no more than three or four pounds 

in that tether when she hits the end. It is 
very, very gentle. I would say we just passed 
the taut tether. 

HOU Roger. 

Well, it sounds like it is cycling and that is good. 

S/C We are still on the right side of him. We have 

gotten a little closer now, to his line of motion. 
To the orbit plane. We are mostly behind him now 
and I think the way to really tell is to how far 
down the horizon we go when we get to maximum or 
behind him. 

HOU Roger. We concur. 

ANT LOS Antigua. 

HOU 12, Houston how much of the tether can you see 

when it is over the nose? 

S/C Well, for instance, right now I can see the whole 

thing because I can see the Agena, but at times 
we can't see anything. Just the red wire that 
goes right down around the nose, but it is below it. 

HOU Okay, can you give us some idea of what your attitude 

excursions are with respect to the tether then? In 
pitch, say, like 60 degrees, degrees, how much are 
you pitching with respect to the tether? 
S/C 90 HOU Do you think it is going all the way to the nose? 



GEMINI XII MISSION COMMENTARY 11-13-66 2 : Ul pm CST Tape 176 



Page k 

S/C About kO degrees. 

HOU Okay, one says 90 and one says kO, you guys 

discuss this and let us know. 
S/C Okay, I think we agree. One was with respect to 

the tether and the other was with respect to the 

local vertical. 
HOU Okay. 

S/C With respect to the local vertical we're pitched 

up 110 degrees. 
HOU Okay, and the Agena is down below you. 

S/C That's right and we're looking at the sky. 

HOU Okay, are you still pitching up or are you pitching 

down? 

S/C We're passing through the horizontal plane, right now. 

HOU Pitching back down. 

S/C Rog. 
HOU Okay 

S/C And we're almost due aft or straight behind the Agena 

HOU Okay, so with respect to the Agena you're almost on the 

horizon with him too, huh? 
S/C No, not quite. He hasn't reached the telemetry area 

yet 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 2:51 PM CST TAPE 177 

PAGE 1 

HOU Agena you are almost on the horizon with him 

too , huh . 

S/C No not quite. He has not quite reached the 

rim of the earth. And he may not get there. 

HOU Okay, how about letting me know when you think 

you are beginning to go back up with respect to 
- in other words traveling forward with respect 
to the Agena. 

S/C Okay, we are both looking for the same thing. 

HOU Yes, I think if you do that, don't you think 

you are beginning to be captured. 
S/C Yes, think so. 

HOU You have about 13 more minutes to sun set. 

S/C Roger. 
GTI LOS Turk. 

HOU Okay, correct that, you have about 9 minutes left. 

S/C . .with all the . . I used, the Agena is still below. 

However, now we have quite a big loop in the tether. 
I'd say we are about 60 feet away from it right now. 

HOU Opening or closing. 

12, Houston. We have got about 3 minutes and 
30 seconds to Antigua LOS and we will have you 
again at Ascension. 12, Houston do you have 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 2:51 PM CST TAPE 177 

PAGE 2 

HOU radar range. Are you locked up on.. 

S/C Radar is on, however, we are not getting anything. 

HOU Okay, we copied on the ground here some thruster 

firing. You firing your maneuver thrusters. 
S/C Just fired it. 

HOU Say again. 

S/C Just fired it briefly. 

HOU Okay. 

S/C ..attitude, trying to see if we can station keep 

at night. 

HOU Okay. 12, Houston. What do you think. Do you 

think you are all right to go into night? Either 
way. 12, Houston. Are you satisfied you can 
station keep? 

S/C We will give it a try. 

HOU Okay. Very good. And we have about 1 minute 

until LOS Antigua. We will see you at Ascension 
at k8 16 18. 

ANT LOS Antigua. 

And we have had loss of signal at the Antigua station of the Eastern 
Test Range. During that state side pass, there was a considerable 
amount of discussion about whether or not to attempt to station keep 
through this upcoming night pass or stay on the tether and see whether 
eventually they might be captured in the gravity gradient mode. The 



GEMINI 12 MISSION COMMENTARY, ll/13/bb, 2:51 PM CST TAPE 177 

PAGE 3 

tether occasionally would taut between the spacecraft and 

the Agena. The two spacecraft have just begun Gemini 12 has 

just begun its 31st revolution. This is the 32nd revolution 

for Agena. We will come up again at the Ascension Island voice 

remoting station, in some k minutes from now. At k& hours 

12 minutes and 9 seconds after lift-off, this is Mission Control 

Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:05 p.m. TAPE 178 

PAGE 1 



This is Mission Control in Houston. We have had acquisition 
of signal of Gemini 12 through the Ascension Island voice 
remoting station. We are standing by for Pete Conrad to put 
in a call to the crew through the Ascension station. Here 
he goes, let's listen. 

HOU Gemini 12, Gemini 12 - Houston at Ascension - 

over. 

S/C 12 - ... we finally got back .... just over . . 

turned it back on again. 

HOU 12, this is Houston. We are still a little 

low yet and I couldn't read you - say it 

again slowly. 

S/C We are in the light now and we just started 

to separate. We are coming up for ... 0. 
We expect sunrise at about 30 degrees silhouette. 

HOU Roger 

S/C These lights keep flashing because we have . . . 

we haven't actually started at all because of 

the Agena .... 
HOU Uh - 12 - Roger. 

HOU Just pass on to you, if you want to maneuver 

you might remember that if you are gonna 
maneuver: in pitch, but your logic switch to 
yaw and vice. versa. It might help a little 
bit... and if you have a few moments between 
Ascension and Tananarive then you can look at 
your water gun, we would like to get the 
count off it, if you can't, forget it. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:05 p.m. TAPE 178 

PAGE 2 

S/C 1597 

HOU Understand 1506 

S/C 1507 .... incidentally, I think this is leaking 

a little bit. 

HOU 12, the com is very bad, we are not reading you 

too well, we will get you at Tananarive in a 
little while. 

S/C Roger 

HOU Yea, the "Roger" came through loud and clear, 

say it again now, maybe you are getting pretty 
high over the station, maybe we can read you. 

S/C The water gun is reading about 1507, might 

be a little higher than that now. I think it 
might be leaking a little bit, I'll be watching 
it. 

HOU Roger - copy. 

S/C Alright, on that water tank, we haven't been 

keeping telemetry .. that's probably why it 
has been acting up. 

HOU Okay, Roger - copy. 

S/C Gemini 12 

HOU Go ahead 12. 

S/C The Agena looks like it is fairly nearly taught 

all the time now and we've just about to pass 
8tateover. We are thinking of maybe letting 

the Gemini pass as we go over. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:05 p.m. TAPE 178 

PAGE 3 



HOU Roger - I didn't quite copy all that. 

HOU Okay, we got that. The other thing is we have 

been looking at your OAMS propellant and you 
have plenty. That's no problem right now. 

S/C Roger. 

HOU 12, Houston - one minute to LOS at Ascension. 

S/c Roger - .... garble ... that .... same attitude. 

HOU Roger. 

LOS 



We have had loss of signal at the Ascension Island voice re- 
moting station. The communications during this pass even 
though it was. a high elevation angle pass and rather fuzzie. 
We are coming up over Tananarive in approximately seven minutes. 
We will come back up at that time, hopefully the communications 
will be a little more clear. At k8 hours, 25 minutes and 
1+7 seconds after liftoff this is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER '13 , 1966, 3:19 pm CST 

TAPE 179, 
PAGE 1 



This is Mission Control Houston. Gemini 12 should be 
acquired by the Tananarive voice remoting station. We're 
standing by for any conversation. Let's listen in right 
now. 



HOU Gemini 12, Houston standing by at Tananarive. 

SC Roge?, Gemini 12 here. 

HOU 12, Houston. How is it looking now? 

SC -^garble) 

HOU Roger. 

12, Houston. The ACS is still on in the Agena 

isn't it? 

SC Roger it is. It is about horisontal with us 



right now. What we are going to do is put 
in a very small upthrust.and then we'll try 
and kill our translation, as we pass over 
directly above it if we do. The tether is 
tightly taut how and I think as long as we can 
keep it taut we might be able to kill our rates 
as we pass straight over. 
HOU Roger. Copy. 

HOU 12, Houston. One minute to LOS at Tananarive. 

Carnarvon U8:U8:02. 
TAN Tananarive LOS 

And we've had loss of signal at the Tananarive voice remoting 

station. WeMl come back up at the Carnarvon pass which will 

be in about 8 minutes. At 48 hours kO minutes and 37 seconds 

after liftoff this is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 3:37 PM CST, TAPE 180- 
PAGE 1 

This is Mission Control Houston. Let's join the conversation 
now in progress between the Carnarvon, Australia: tracking station 
and Gemini 12. 



S/C ...control mode do you show the Agena in now and 

how much gas is left? 
CRO Okay, in FC-1. 

HOU We show 5 pounds gas Carnarvon. 

CRO Okay, about 5 pounds of gas. 

Has there been much thruster activity in the Agena. 
HOU Just very little. In fact, it is practically nil. 

CRO What was your last comment Flight? 

HOU Say again? 

CRO What was your last conment? I though I heard you 

say something. 

HOU I Just wanted you - I didn't think you copied his 

first transmission. He asked about the Agena. 

CRO Oh yes, I copied. I was just checking on all that. 

We are showing yaw right, yaw left. Yes, he is 
maneuver quite a bit. 

HOU Say again. 

CRO He is doing quite a bit of maneuvering right now. 

HOU Okay. We need an Agena contingency India. 

CRO Roger . 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:37 PM CST, TAPE l80 

PAGE 2 

CRO Okay 12, you can turn your encoder bac on. 

S/C Okay. 

HOU Does he think he has it set up yet? Carnarvon, 

ask him if he thinks he is close to set up. 

CRO 12, this is Carnarvon. How close to setting up 

the Agena do you think you have it. 

S/C Well, we are trying to get back into position 

now and I think we may have a slightly better 
crack at this time thaii we had before. Rates 
seem to be nulled down a bit better. 

CRO Okay. 

S/C We will do what we can. 

CRO Do you want to make any comment about the 

purge, Flight? 

HOU I am think about that. It sounds like he has 

the rates nulled and is ready to get started 
into it. 

CRO Right. 

HOU I think I am going to let it go. 

CRO Okay. The last time he was talking to me it 

sounded like he has a typewriter up there or 

something. 

HOU That might have been our little printer over here. 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 3:37 PM CST, TAPE 180 

PAGE 3 

CRO Oh. 

HOU Carnarvon Com Flight. 

CRO Go ahead. 

HOU Are you seeing any thruster activity on the 

spacecraft . 

CRO That is affirmative. Yaw right. 

HOU Is it very much or would you say pretty small. 

CRO Pretty small. 

HOU Okay. 

CRO He just gave about 3 pulses on, yaw right. 

HOU Okay, what control mode, pulse? 

CRO That is affirmative. 

HOU Okay. 

CRO There is a little more yaw right. 

HOU Carnarvon Com Flight. 

: Carnarvon Com Flight. 

Carnarvon Com Flight. 

Carnarvon Com Flight. Carnarvon Cap Com, Flight. 

Carnarvon Cap Com Flight. 
HOU Carnarvon, this is Flight. If you read me, 

send us an Agena LOS main. 
This is Mission Control Houston again. Apparently we are having a 
little difficulty with the communication lines in the last portion 
of this pass, over Carnarvon. But we passed the time what should 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 3:37 PM CST, TAPE 180 

PAGE k 

have been loss of signal at Carnarvon. We will come back up at 
the Hawaii pass, which will be in approximately 16 minutes at 
k8 hours 57 minutes and 36 seconds after lift-off, this is Mission 
Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, U:00 pm CST 

TAPE 181 
PAGE 1 

This is Mission Control Houston, the spacecraft Gemini 12 
attached to the Agena Target Vehicle by the tether is coming 
up now over the Hawaii tracking station. They're beginning 
to get sort of ragged electronic contact with the spacecraft, 
as it comes farther over the hill. We'll have a pass here of 
about 8 minutes and 31 seconds over Hawaii. We J 11 standby 
for the conversation between the Spacecraft Communicator, 
Keith Kundell and Gemini 12. The Spacecraft Communicator 
reports that everything is a lot more stable then it was the 
last time around. The control system on Gemini is turned 
off at this time. Let's listen in. 



HAW 12, Hawaii standing by. 

SC Roger Hawaii we're still giving this tethered 

Agena a try. 

HAW Roger and it looks pretty stable from here. 

SC Roger, we haven't dropped it in quite awhile 



and looks like we're in pretty good shape. 
We're just t to ; the 10 feet south and 
maybe 20 feet ahead of the direction of orbit 
travel. Good tight tether now. 



HAW Roger looks like you still have a very slow 

roll rate and that is very gradual. 
SC - Is that the spacecraft you read. 

HSW Affirm. 

SC Now while our attitudes does have certain excur- 

sions to it, we're about 1+5 degrees pitch aft now. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, U:00 pm CST 

TAPE 181, 
PAGE 2 

SC That doesn't seem to be to much it'll bother 

them. 

HAW Roger, very good. 

HOU Hawaii Flight 

HAW Go Flight 

HOU I copy him the Agena 10 feet down below him and 

20 feet to which side? 
HAW Affirm 
HOU Which side of the Agena? 

Is he to the right or the left of it? 
HAW Are you to the right or the left of the Agena? 

HOU He's to the left of the Agena? 

SC. We're just about to cross right now, as far 

north south with respect to the orbit plane. 

We're creasing now and we're maybe 10 feet 

ahead. 

SC Yes, 10 feet ahead. 

SC Right. 

SC Going just a little bit north now. All right 

I'll make that (garble) 

HAW We have an Agena clock reset load to send in 

could you give us encoder off please? 

SC Roger, encoder off, (garble) will not lock on 

and we're not able to get map lights right 
now. We're not pointed directly at it. I 
tried to switch to spiral or dipole and was 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, U:00 pm CST 

TAPE 181, 
PAGE 3 



unable to get any map lights. 
HAW Okay. 

SC Whlch-anterma do you show iW»'re on: now? 

HAW At the present time you're on the spiral. 

HAW At the present time you're on the spiral 

antenna. 

HOU Hawaii, Flight, a memory compare and SPC load? 

HAW Okay. 

We're rechecking it. 
HOU Is the spacecraft computer still up Hawaii? 

HAW That is affirm Flight. 

HOU Okay, send OBC's Hawaii, Agena - India and 

echo contigency. 
HAW India and echo, roger. 

HOU Roger, and an QBC. 

HAW Roger 

HAW Okay and since we've had acquisition it's 

roughly k minutes now, he's gone through it 
looks about like a 50 degrees in roll and 
pitch and yaw are almost solid. 

HOU Ask him if he thinks its setting up properly 

in the gradient: now? 1 

HAW 12, Hawaii. Do you think you're setting up 

in the gradient at the present? 

SC It sure looks like it. We're - the docking 

bar is lined right up with the dipole, almost 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, U-.00 pm CST 

TAPE 181, 
PAGE k 

straight above it and the tether is taut. 
HAW Okay, mighty fine. 

Since we've had acquisition on you you look 
like you've rolled about roughly, 60 degrees, 
that's been over about a five minute period 
now. 

SC That's not the attitude we* re worried about 

it's more the (garbled) 

I think we might want to stay with Agena in 
attitude control a little bit longer and then 
maybe near the end cut her off. 
HAW Okay. 

Flight go ahead and try to update him right 
now. 

H0U Roger. 

Think maybe we ought to try sending a command, 
something that we have a function that we can 
verify that we're actually getting into the 
thing. 

HOU Hawaii from Flight. 

HAW Go Flight. 

HOU They want to use a command to check it, they 

could use a purge light. 
HAW Okay, we seem to be having trouble getting into 

it too. I think maybe we ought to check first 

and then let him try it. 
HOU Okay. You've got a memory compare on your clock 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, h:00 pm CST 

TAPE 181, 
PAGE 5 



load didn't you? 
HAW Unfortunately that was may mistake on that 

Flight, we didn't. 
HGU Okay. 

HAW We're showing we're not getting into memory 

either . 

HOU Okay, do you want to try it again? 

HAW Yes, we've resent it again and we still get 

negative on the memory compare. 
HOU And the encoder is off right. 

HAW Affirm. 

Oh, it did go in the second time he said. It 

shows up now on the memory readout that it is 

in and in correct. 
HOU Okay. 

You sent SPC enable then. 

And give him back his encoder as soon as you 

can. 

HAW Roger . 

Okay, we got that in okay. 
HOU Thank you. 

HAW Let's see, 12 you can turn your encoder back 

on. We'll have LOS in about one minute. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966, k:00 pm CST 

TAPE 181, 
PAGE 6 



If you'd like to change antennas, we'll 
check and see if you get it in okay. 

SC What do the Agena people recommend for 

getting it locked in? 

HAW What do you recommend on it? 

HOU For what? 

HAW For their check. 

SC Okay, I'm on the spiral now. 

HAW Yes, that is affirm. 

SC Okay, I'll send 260, see if it switches. 

HAW That is affirm, we agree it did switch. 

SC Okay, I'm not getting a map light here. 

HAW Okay, affirm it is working all right. 

SC Check and see with them, the Agena people in 

Houston which antenna would be best? 
HAW Did you copy that last one Flight? 

HOU Affirmative . 

HAW Oh, one little goof here. I didn't get TX in 

so the burn will be coming out with the TM 
on it. 

HOU Okay 



This is Mission Control Houston. Apparently we have had loss 
of signal at Hawaii. Coming up on the Stateside pass here, 
should be acquiring by the California station momentarily. 
Let's listen in now. 



GEMINI 12 MISSION COMMENTARY, H/13/66, 4:00 p.m. TAPE l8l 

PAGE 7 



HOU Gemini 12, Houston through California. 

S/C Go ahead Houston. 

HOU Roger, you are getting extremely low on attitude 

gas in the Agena and if you think you are 
stable, you still have some daylight any time 
you are ready, you can go ahead and shut the 
ACS off. 

S/C Houston, the best indication we have really 

is capture or not is the Agena. If it's that 
low I guess we will have no choice. 

HOU Standby a minute. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, II/13/66, U:ll p.m. TAPE 182 

PAGE 1 



HOU 12, Houston, go ahead and look at it as long 

as you want, I just wanted to advise you 
about the attitude gas and whenever you are 
satisfied, that's up to you 

S/C Okay, Houston, we understand about the attitude 

gas. Just what do you plan on doing, this 
tether exercise takes a long time. We are in 
that region now where we can stay with gases 
a long period by slowly going into the spin 
like we did I was afraid to attempt. We are 
in good position now. We could turn off the 
gas and just let it go, and I would Buggest 
no matter what it does that we go through 
the night period perhaps in this manner. We 
won't touch the controls. So that if we are 
not captured and we go into a spin we will 
come out the next day in that spin. 

HOU Roger, if you are satisfied, go ahead then. 

I gather from what you are saying, you have 
a pretty taught tether all the time now. 

S/C That's right, it's a taught tether. There is 

not muchf force" in there at all, however, we 
are just merely going along with it. Although 
we were in the same position the last time 
and we slo-w-l-y got into a horizonal position, 
and it might be the same this time. 



GEMINI 12 MISSION COMMENTARY , 11/13/66, k-.ll p.m. TAPE 182 

PAGE 2 



HOU Okay, whenever you are ready you can give her 

a go. 

S/C We are not getting map lights so you will have 

to confirm whether the ACS is ON. 

HOU Roger, you will be over Texas in just a couple 

of minutes so we can look at it then. You 
can always send your cone lights or aft lights 
or something like that if you want to assure 
yourself that youre getting in. 



S/C It's kinda nice and pretty up here. 

HOU I'm talking about when you get in the night 

side if you're - 
S/C Nice recovery. 

S/C We're talking about attitude gas. 

HOU Whose on first. 

Guaymas remote - California local. 
... Guaymas remote - California local. 

GYM Guaymas remote. 

HOU 12, Houston, we have you .. we have Agena 

Telemetry now at Texas if you want to try 
and turn it off. 

S/C Roger, we did turn it off. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, kill p.m. TAPE l82 



PAGE 3 

HOU 12, Houston, we show it off on the ground. 

You getting in alright. 
S/C Roger. 
S/C Houston, 12. 

HOU Go ahead. 

S/C The tether is essentially taught now and to 



give you some idea of force of the tether, 
the natural bend of the wire when it made 
the loop, is still bent about 70 degrees. 
So, you can imagine how small the forces 
are in that tether. 



HOU Roger - copy. 

HOU Texas remote - Guaymas local. 

TEX Texas remote. 

GYM Local. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 k:21 pm CST Tape 183 

Page 1 



This is Mission Control Houston, we're still standing by for any 
further conversation during this stateside pass. Spacecraft just 
beginning it's 3lst revolution. It is now over the Carribean ocean. 
And will be passing out of the Antigua station acquisition range 
within 3 or k minutes. We'll continue to monitor the air/ground 
for any conversation. 

HOU 12 Houston How does everything look now? 

S/C Roger, it appears as though its pointed right 

toward us and if anything, it looks as if it is 
moving away from the horizon. Looks like we are 
in pretty good shape now. 

HOU Very good. Very good. 

S/C We'll just hold on to this thing through out the 

main period. 

HOU Okay. 12 Houston. On the next rev over Texas I'll 

pass you your update for your SEP maneuver and it' will 

be with the firing thrusters. 
S/C Okay. Matter of interest, the docking light is a good 

device to illuminate the tether with at night, it works 

out very nicely. 

HOU Yeah. Roger. We used it on ours. We've been watching 

you here on the ground and it sort of looks like you 
are just oscillating there in sort of a cone I guess. 

S/C It's kind of hard to tell just looking at attitude. 

GTI LOS Turk 

HOU 12 Houston, we've got about 2 minutes to LOS Antigua 



GEMINI XII MISSION COMMENTARY 11-13-66 U:21 pm CST Tape 183 

Page 2 



and see you over ascension. 
S/C Roger Houston. 

HOU 12 Houston. Did you get a chance to eat yet? 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, k:31 PM CST TAPE 18U 

PAGE 1 

ANT LOS Antigua. 

This is Mission Control Houston. We have just completed one of 
the quietest state side passes of this mission. Apparently the 
tether exercise is going along quite well and tend to be near 
what may be gravity gradient mode. We are coming up over the 
Ascension Island voice remoting station where comnunications 
haven't been tooi good this mission and there will be fairly 
low elevation angles so they could be worse this time. We 
will come up at that time in approximately 6 minutes at k9 
hours U6 minutes and 25 seconds after lift-off, this is Mission 
Control Houston. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 U:UO pm CST Tape 185 

Page 1 



This is Mission Control Houston. Spacecraft Gemini XII is now 
over the Ascension Island tracking station and let's join the 
conversation between Pete Conrad and the crew of Gemini XII. 
CONRAD ....section 2, then section 1, hydrogen normal 

and oxygen in a normal purge. Two minutes, over . 
S/C Roger, normal fuel cells purge two then one, 

is that correct? 
HOU That's correct. Do it as soon as you come out 

in daylight And you are satisfied you can watch 

it and see what happens to your rates and so 

forth when you purge. 
S/C (garbled) and we'll have a and see what that 

does. 

HOU Roger. 

This is Mission Control Houston we've had only a brief exchange 

during this pass over the Ascension Island voice remoting station 

between spacecraft communicator Pete Conrad here in Mission Con- 
concerned ' 

trol and the crew of Gemini XII. Mainly j ' ■ instructions for 
doing the fuel cell purge after they came out in to daylight and the 
main purpose would be to observe any rates that might be set up dur- 
ing the actual purge of the fuel cell hydrogen and oxygen system. 
We'll continue to stand by during this pass for any possible con- 
versation. It is highly unlikely there will be and then we'll come 
up again for.... let's join the conversation, 



GEMINI XII MISSION COMMENTARY 11-13-66 k:kO pm CST Tape l85 

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HOU Hou.. .Gemini XII Houston. One minute to LOS 

Ascension and see you Tananarive 50:08. 

S/C Roger . 

Ascension LOS 

And we have had loss of signal at the Ascension Island voice re- 
moting station and in 8 minutes we are due to be acquired at the 
Tananarive voice remoting station. We'll come back up at that 
time. At 50 hours and 11 seconds after liftoff, this is Mission 
Control in Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 U:55 pm CST Tape 186 

Page 1 

This^ission Control Houston. We're at 50 hours 8 minutes and k6 
seconds after liftoff. Over the Tannanarive voice remoting station 
let's listen in for any conversation between the spacecraft communi- 
cator Conrad and the crew. Let's join it 

HOU Gemini XII Houston through Tananarive, over. 

Gemini XII, Gemini XII, Houston through Tananarive 
S/C Roger, Houston this is XII. 

HOU Roger, a couple of things. Have you turned your 

computer on, over. 
S/C Both computers are on. 

HOU Okay. The other thing is have you been moving a- 

round in the cockpit at all, we'd like to know if 
your movements in the cockpit tend to upset the 
combination at all. 

S/C We can't tell just now. It's still dark. I'll let 

you know in the light time. We did make a urine dump 
here to see what it would do and we didn't get any 
results, we'll find out. 

HOU Okay, very good and when you do get out in the daylight 

and after the fuel cell purge if you would make some 
deliberate movements in the cockpit to observe we would 
appreciate that and your comments. 

S/c Okay. We will. We've been moving in the cockpit, stow- 

ing things. Turned the Agena control system off , occa- 
sionally we'll get a lit tie.... in the tether (garbled) 



GEMINI XII MISSION COMMENTARY 11-13-66 U:55 pm CST Tape 186 

Page 2 



and then goes slack a little bit. 
HOU Roger, very good. Where are you in relation to the 

horizon now. Are you still pointed down pretty godd? 
S/C As far as we know, however, it's still dark here and 

we put the lights on the and we'll have to find 

out where we are a little bit later. 
HOU Okay. 

S/C You want us to leave the computer on for telemetry 

don't you on this. 
HOU No. We would like the computer off now if you're 

not using it so that you will save electrical power. 
S/C Houston, this is 12. 

HOU Go ahead. 

S/C Roger, we reported spacecraft motions through the com- 

puter and do you want us to leave it on to records 
the ....degrees. 

HOU That's negative, we want the computer off, please. 

We want the computer off, please. 
S/C Roger. 
Hou Thank you. 

S/C Houston, would you say again which sections you want 

purged first. 
HOU Roger, purge section 2 first. 

S/C Roger, normal 2 minute 30 seconds to purge. 

HOU That's affirmative. 



GEMINI XII MISSION COMMENTARY 11-13-66 U:55 pm CST Tape 186 

Page 3 



HOU Gemini 12 Houston. One minute to LOS Tananarive. 

S/C Roger, Houston. 

TAN Tananarive LOS 

And this is Mission Control Houston, we've had loss of signal 
over the Tananarive voice remoting station. A fairly noisy- 
pass, a lot of background noise, but some conversation between 
Mission Control here in Houston and the crew of Gemini XII. In 
approximately 17 minutes we'll be coming up on the first pass 
over the tracking ship Coastal Sentry, just south of Japan. 
We'll come back up at that time with that pass at 50 hours 
16 minutes and 1+9 seconds after liftoff this is Mission Control 
Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/13/66, 5:10 p.m. TAPE 187 

PAGE 1 



This is Mission Control at Houston at 50 hours, 33 minutes 
and Ik seconds after liftoff. We have had ac-ach contact 
over the tracking ship Coastal Sentry of Gemini 12. We are 
standing by for any conversation that might transpire. This 
is a fairly low angle elevation pass. All systems are GO. 
Let's listen in. 



HOU Roger. 

CSQ Gemini 12, CSQ 

S/C Go ahead CSQ 

CSQ Roger, how did the purge go. 

S/C Purge was go. Well, I think we are still 

captured . . . garble . . . 
HOU Fuel cell purge. 

CSQ Roger. We con't have anything else for you, 

will be standing by. 
S/C Roger 

S/C Uh, CSQ you might relay to Houston that if 

it is possible we would like to take the last 
pictures during the stand up EVA tomorrow. 

CSQ Okay. Houston copy. 

HOU I did. 

HOU CSQ from Flight. 

CSQ Go ahead 

HOU Tell them that after the separation, or after 

the end of the tether exercise, we are looking 
for a maneuver about 25 minutes later, so they 
will have time to get squared away and do an 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:10 p.m. TAPE 187 

PAGE 2 



align and then be ready for the burn. 
CSQ Okay. 
CSQ 12, CSQ 

S/C Go ahead. 

HOU We want to do a burn about 25 minutes after 

you terminate the tether exercise and align. 

C/S Roger - we were just discussing that CSQ, we 

are trying to figure out a way of making the 
burn both control . . ( fade ) 

CSQ Rog. 

S/C What is the magnitude of th\ burn, is it ... sec. 

HOU That is correct. 

CSQ Right 

CSQ One minute to LOS Gemini 12. 

S/C Roger. 

CSQ LOS on Gemini. 

And this is Mission Control Houston. We have had loss of signal 
on Gemini 12 from the Coastal Sentry tracking ship. We will 
come up again during the Hawaii pass which will be in approxi- 
mately eleven minutes. At 50 hours, 38 minutes and 17 seconds 
after liftoff, this is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 5:35 pm CST Tape 188 

Page 1 



This is Mission Control Houston we're at 50 hours k$ minutes and 
5 seconds after liftoff. We should be acquiring the Hawaii Islands 
tracking station at any moment, we'll stand by for comments be- 
tween the Hawaii and the crew of Gemini XII on the progress of the 
tether exercise. The crew should be in an eat period at this 
time. Hawaii is scheduled to provide the crew with some planned 
landing area updates. During the next pass over the states another 
run of the Beta spectometer exercise for experiments scheduled to 
be run. We're standing by for Hawaii here. 

Roger, would you please send TX for 

HOU Hello Hawaii, 12 here. For information we would 

like to go clean of the Agena prior to darkness 
in the daylight and also set up for a burn. We 
are still discussing how to make this burn, we're 
not to sure how much control we're going to have to 
make this one. 
HAW Roger, we copy. Did you copy that? 

HOU Yes, I copied they were still considering how they 

were going to do the burn and they weren't sure how 
well they would be able to do it with the control 
system. 

HAW Roger. They also said they would get clean of the 

Agena in the daylight. 
HOU Okay. Stand by I'll be sure that's what we have. 

You mean do the burn in daylight? Is that what you 

mean? 

HAW No, they wanted to make .. .Yeah, yeah, that's right. 



GEMINI XII MISSION COMMENTARY 11-13-66 5:35 pm CST Tape 188 

Page 2 

HOU Well, you'd better ask them. Do they mean get 

off the tether or do they mean do the burn? 

HAW 12 Hawaii. Do you mean do the burn in daylight 

and get off rather than get 'off the tether in 
daylight . 

S/C No. We want to get off the tether in daylight, 

of course. 

HGU Yeah, that's fine, and then we'll do the burn 

about 25 minutes later in daylight. 
HAW Okay, flight says we'll do the burn about 25 

minutes later in daylight. 
S/C Roger, I think it would be much better to do the 

burn in daylight. We're going to have to determine 

just how much control we have and how long, how much 

it takes to align the platform. 
HAW Okay. 

HOU Hawaii, will you send a TX for Texas for LOS, 511100. 

HAW 511100. 

HOU Affirmative. 

S/C Hawaii, 12. 

HAW 12, Hawaii. 

S/C Roger, unless you want us to continue gravity gradient 

we can get off the tether any time you want us to. 

HAW Okay, they're looking at that real close right now. 

We'll have something for you shortly. 

S/C Okay. 

Sounds like they want to get off right now. Do 



GEMINI XII MISSION COMMENTARY 11-13-66 5:35 pm CST Tape l88 

Page 3 



you want us to go ahead. 
HOU Negative standby. 

Hawaii from flight 
HAW Yeah, flight. 

HOU We would like them to continue the gradient through 

the rest of this day pass and through the upcoming 
day pass and then separate at the next sunrise. 

HAW They would like for you to continue this gradient 

exercise through the rest of this day pass night 
time and then separate upcoming sunrise. 

S/C Okay, understand we'll continue the gradient through 

the next night pass and separate at sunrise. 

HAW Roger, that's affirm. 

S/C understand. 

HAW 12 Hawaii, we'll have LOS in a minute. 

S/C Roger, Hawaii. 

HOU Hawaii has LOS 

This is Mission Control Houston. We've had loss of signal at the 
Hawaii station. We're coming up now on a stateside pass that will 
carry the spacecraft down over the Mexico, Central America and South 
America with a fairly brief time over part of the eastern test range, 
Guaymas and the California station. Should be acquiring at California 
in approximately ten seconds. We'll stand by for spacecraft communi- 
cator Conrads conversation with the crew. Let's listen in. 
HOU Gemini 12 Houston to California, over. 

CAL Roger, 12. 

HOU I got the up date your PLAs anytime you're ready to 



GEMINI XII MISSION COMMENTARY 11-13-66 5:35 pm CST Tape l88 

Page h 

copy. 

S/C Okay. 

HOU Okay. Area 3k-3k; GETRC 532029 RET kOOK 2107; 

RETRB 2635; the bank angles are roll left 80 
roll right 100, the weather is good in the bank* 
angles and the bank angles are good in all follow- 
ing areas. There is a separation maneuver re- 
quired for 3U-3A, no separation maneuvers for the 
rest of them. Area 35-3 Bravo GETRC 5^5601; RET 
U00 K 21 * 05, RETRB 26 + 53, area 36 - 3A, GETRC 
563201, RET UOOK 20 + 35; RETRB 25 + 58; area 
37 Charlie charlie, GETRZ 580705; RET kOO K 19 + 55 
RETRB 25 + Ok; area 38 Alpha charlie 5901U2, RET UOOK 
20 + 5U , RETRB 26 + hO area 39 Alpha charlie, GETRC 
60 38 01, RET HOOK 21 + 17, RETRB 27+05, area U0-2 
Alpha, GETRC 621152, RET UOOK 21 + 20, RETRB 26 + U2 
Do you copy? 

S/C Roger, I got all of them except the first area and 

GETRC and RET UOOK. 
HOU Roger, area 3^-3 Alpha, 53 20 29, RET UOOK 21 + 07 

RETRB 26 + 35. 

S/C This is Gemini 12, you faded out at the end but I 

have it al}., thank you. 
HOU Okay, I've got a separation maneuver for you, are you 

ready to copy? 
S/C Roger, go ahead. 



GEMINI XII MISSION COMMENTARY 11-13-66 5:35 pm CST Tape l88 

Page 5 

HOU Roger, purpose separation. GETB 5 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:^9 PM CST TAPE 189 

PAGE 1 

S/C Roger, go ahead. 

HOU Roger, perfect separation. GETB 52 Ik 27 

Delta V 60, 6.1 excuse me. Six feet per second. 
Burn time 8 seconds. Yaw 0, pitch 0. Address 25 
00060. Address 26, address 27, all zeros. Thrusters 
aft, maneuver posigrade. 



HOU Guaymas go remote, California go local. 

GYM Guaymas remote. 

CAL California local. 

HOU 12, Houston, did you copy? 

S/C Roger, you faded out right at the end. Separation 

maneuver GET burn 521^27, Delta V 6.0 duration 8 seconds 
yaw 0, pitch 0, address 25 9 say again address 2500060 
address 26, 27 zeros, say again after that. 

HOU Roger. Thrusters aft, the maneuver is posigrade. 

S/C Roger, understand thrusters aft maneuver posigrade. 

HOU 12, Houston. We appreciate your control problem and 



we are going to see how well you do on your burn and 
how you do on getting your platform alignment and 
everything and we will talk to you after that about 
the rest of it. 

S/C Very good. It gives us a little challenge. 

HOU Okay, I didn't copy your last. We would like you to 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:^9 PM CST TAPE 189 



PAGE 2 

HOU turn your X-eray on Beta with mag and leave it on 

through the sleep period, please. 
S/c Roger. X-eray on the Beta with mag through the 

sleep period. 

HOU And what was the last thing you said? 

S/C Disregard. 
HOU Okay. 

HOU Texas go remote, Guaymas go local. 

TEX Texas remote. . 

GUY Guaymas local. 

HOU Okay and after your separation maneuver, we plan 

to power you down and get you fed and go to bed. 
S/c Very good. Houston, 12. There doesn't seem to 



be too much doubt that we are captured. ..two 
total amplitudes. Seem to be... a little bit 
. . . total angle . . . vertical . . . previous one , but 
they recovered within about oh, I would say 30 degrees 
on horizontal. 

HOU Roger. In other words, you are gone about plus 

or minus 60 degrees from the vertical. 
S/C Yes, looks like it. 

HOU Roger, very good. 12, Houston, FEE will look for 

your crew status report. You can pass it whenever 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:^9 PM CST TAPE 189 



PAGE 3 

HOU you are over his station and you are ready to give 

it. No rush. 
S/C Roger. 

HOU And 12, Houston. Your sleep period is going to 

run approximately 53 hours to 6l hours. 

S/C Roger. Roger, we just passed over Acapulco. 

HOU And 12, Houston. After you separate would you 

turn your encoder off. 

S/C Will do. Do you have any fix for the radar? 

HOU That is negative. 12, Houston. I think we are 



going to change the plan and see if we can't put 
S-51 in for tomorrow morning. And it also looks 
like your separation from the Agena for the last 
time. 



S/C Say again please. 

HOU Roger, we are going to try for S-51 in tomorrow. 

S/C Okay, what is that change address that you want. 

HOU Yes, we are going to change the time so you do 

S-51 and the jettison tomorrow. 
S/C Okay. You say we are not coming back to the Agena? 

HOU It looks that way right now. We would like to see 

how well you do after you get off it. That is the 

main thing. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 5:^9 PM CST TAPE . 189 

PAGE k 

S/C Okay, I guess you want to check our ... no 

residuals . . . 

HOU That is affirmative. Okay you are going over the 

hill now and this is your last state side pass. 
We will see you in the morning. 

S/C Roger. 

This is Mission Control Houston again. We have had loss of signal 
out of the Texas station in the Eastern Test Range. And our next 
station to be acquired will be a brief pass just over the edge of 
Ascension Island. However, it is such a low elevation angle, it 
is highly unlikely any contact will be attempted. We will come up 
over Tananarive at ground elapsed time of 51 hours U3 minutes 22 sec- 
onds. During this state side pass, Pete Conrad passed up to the crew 
a series of planned landing areas updates. Also a time for 
jettisoning the tether of ground elapsed time of 51 hours 
hS minutes 27 seconds and the separation maneuver of 6 feet per 
second posigrade at a ground elapsed time of 52 hours ll+ minutes 
and 27 seconds. At 51 hours 12 minutes and k2 seconds after lift-off, 
this is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l3/66, 6:30 p.m. TAPE 190 

PAGE 1 

This is Mission Control Houston at 51 hours, 1+3 minutes and 
25 seconds after liftoff. Coming up over the Tananarive voice 
remoting station should be acquiring right now. Standing by 
for Pete Conrad to put in a call. There he goes, let's listen. 
HOU Gemini 12, Gemini 12 - Houston through 

Tananarive - over. 
S/C Houston, this is Gemini 12 through Tananarive 

talking. 

HOU Roger, I've got a few things for you. As soon 

as you get off the tt«th«r, we would like you 
to hold a normal fuel cell purge while you 
are aligning the platform and prior to the 
SET maneuver. Also, make sure you get the 
encoder off as we want to set up the Agena. 
And then you can go ahead and eat and sleep 
which will be 53 to 6l hours elapsed and 
tomorrow morning we are going to schedule 
S-51 at 62:U5 and your second pass by us 
will be 6k:20 and we gonna try and schedule 
the EVA at 65 hours, so, you think you have 
enough time then, on your second pass all 
you have to do is snap a couple of pictures. 
Over. 

S/C Uh, let's think about that for a while. 

Meanwhile we will be asking how critical 
is the' time on this SEP burn Houston. We 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:30 p.m. TAPE 190 

PAGE 2 



want to take our time and if it's not 

critical between separation if we burn 

a little bit later on. 
HOU Well, Roger, I thought 25 minutes would be 

enough for you to get off. We could move 

it a little bit later I believe. 
S/C No, I say, we don't know what it's gonna 

take. We just want to know if it's critical 

on the time for the burn. 
HOU No, it's not critical, if you can make it, 

go ahead and make it. 
S/C How about burning BEP with the birds flying 

separate during telemetry, going away. 
HOU That's fine, burn it any way you want and if 

you don't burn it on time, if you will give 

us the exact time of the burn, that's fine. 

Whenever you can burn it, burn it. 

Well, what we need is the exact time. 
S/C Roger - 12. 

HOU Okay, for the rest of tomorrow we will work 

out a schedule of D-10, T-2, S-ll and S-29 
depending on how good your control system 
ability is after you give us a little evaluation 
after your SEP burn. 

S/C Roger. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:30 p.m. TAPE 190 

PAGE 3 

HOU Although, if you are awake during your sleep 

period in the middle of the night for any 
reason, and you can think of it, a 30 second 
0 2 purge will help your fuel cells during 
the night time there. If you aren't awake, 
no problem, but if you are well give it a 
30 second Q> 2 purge. 

S/C Roger - understand. We've been able to get 

a purge just a little bit ago. Do you want 
this to be a forward two minute purge. 

HOU That is affirmative. We would like to get 

a full purge on it right after you get off 
the Agena while you are aligning the platform. 

S/C Roger, understand. Also, we have been looking 

at these Delta P lights for a little while and 
the only thing we are getting through the 
circuit breaker is the fact that the Delta P 
lights are on. We would kinda like to turn 
them off. 

HOU Okay, we concur. 

S/C Thank you 

HOU 12, Houston, the only way we can see and 

monitor the Delta P lights on the telemetry is 
if you leave them on. So, if you could cover 
them with something we would appreciate it if 
you would leave the circuit breaker on. 

S/C Plug it in. Okay we will do it right. 

HOU Okay, the only difference on your burn time 

Delta T wise with the forward firing thrusters 



GEMINI 12 MISSION COMMENTARY, II/13/66, 6:30 p.m. TAPE 190 

PAGE k 

it will be a 10 second burn vice an 8 second 
burn. 

S/C Roger. 

HOU That last purge you did helped the fuel cells 

considerably, so that's why we want to get 
another long purge on them. 

S/C Roger. 

HOU 12, Houston - have you set from the Agena yet. 

S/C I am going to now. 

HOU You are going to now, is that correct. 

S/C Roger - standby. 

HOU Okay, we've got about a minute and U5 seconds 

from LOS. 

S/C We are released .. we still got it within .. 

Boy, are we released. 
HOU Understand you are off the Agena, is that 

correct. 

S/C Roger and the force of .... rate... is a 

good one... it looks like a good .... (fade) 
HOU Roger. We get it in rate command. 

S/C Say again. 

HOU I say, we didn't hbtice that., we v were in rate 

command when we did it. Of course, ours was 
working real good. 

TAN Tananarive LOS. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 6:30 p.m. TAPE 190 

PAGE 5 

This is Mission Control Houston. As you heard during the 
Tananarive pass the crew jettisoned the tether between the 
spacecraft and the Agena target vehicle at a ground elapse 
time of approximately 51 hours, 51 minutes and 10 seconds. 
This time may be revised somewhat. Other information passed 
to the crew was that their sleep period would run from approxi- 
mately 53 hours ground elapsed time to 6l hours ground elapsed 
time. Times for tomorrow morning sodium vapor cloud test 
from the French rocket site in Algeria, the first pass would 
be 62 hours U5 minutes ground elapsed time and the second pass 
6U hours, 20 minutes. The second standup EVA tomorrow will 
come at about 65 hours. At 51 hours, 53 minutes and 28 
seconds after liftoff, this is Mission Control Houston. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/13/66, 6:53 pm CST, TAPE 191, PAGE 1 * 



This is Mission Control at 52 hours 6 minutes and h seconds after liftoff 
Spacecraft Gemini 12 has just entered the acquisition area of the 
tracking ship Coastal Sentry. We're standing by for any conversation 
between spacecraft communicator, Bill Garvin, and the crew of Gemini 12. 
Garvin is putting in a call now. 



CSQ Gemini 12, CSQ 

S/C Roger, CSQ, 

CSQ Roger, we're ready to go ahead and start gyro com- 

passing the Agena. 

S /C Don't touch the Agena yet. We don't have much light 

and we want to get away, we're trying to watch. We 
trying to align the platform. We have a hard time 
finding them. 

CSQ Give me a call when you are ready 

S/c I don't know if we'll get a / fOUr feet per second 

separation, but we're ready to compass. 
CSQ Okay. 

S/c We're using maneuver thrusters for yaw control. 

CSQ Roger. Flight, CSQ 

HOU Go ahead. 

CSQ You may have to have to go ahead and gyro compass 

this thing over Hawaii 
HAW Yeah, okay. 

Two minutes from LOS 



GEMINI XII MISSION COMMENTARY, 11/13/66, 6:53 pm CST, TAPE 191, PAGE 2\ 



You still have to call me back. 
CSQ Okay, Hawaii. 

HOU CSQ, flight, would you send us an OBC. 

CSQ Okay. 

HOU Say again, you're fading in and out, Bill. 

CSQ I say, I'd like to remind you to have the Agena 

send out that time word reset load. We didn't 

transmit that either. 
HOU Okay. We copy. 

CSQ We're coming up on LOS, Gemini 12. 

S/C (garbled) 

HOU Did he say he was going to burn on time? 

CSQ That is affirmed. Flight, CSQ. 

HOU Go ahead. 

CSQ We caught that about the fact that he is utilizing 

the on control by using the maneuver thrusters. 
HOU Yeah, we copied that. 

CSQ Okay. We had a LOS on Gemini 



This is Mission Control Houston at 52 hours Ik minutes k seconds after 
liftoff. The next station to acquire will be the Hawaii tracking station 
in approximately 9 minutes. They're coming up on the separation 
maneuver. in approximately 10 seconds and the crew has indicated that 
over the Coastal Sentry that they will do the burn on time using the 
forward firing thrusters instead of the aft firing thrusters. In this 
manner, they will be able to watch the Agena during the actual separation. 
At 52 hours lh minutes and Uo seconds after liftoff, this is Mission Control. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:11 PM CST TAPE 192 

PAGE 1 

This is Gemini Control 52 hours 2h minutes 3 seconds into the 
mission. We have acquisition with the Hawaii tracking station 
coming up at 33 seconds. That is some 20 seconds from now. We 
will stand by at that time to hear conversation with the astronauts 
on their separation maneuver from the Agena vehicle. 



HOU . . its in the cockpit . 

S/C Okay. 
HOU Hawaii Com, Flight. 

HAW Go Flight 

HOU After those items, ask them to drink as much 

water as they feel is reasonable. In the meal 
tonight. 

HAW 12, Hawaii. 

S/C Go ahead, Hawaii. 

HAW All right, we would like to know how it went during 

the burn. 

S/C Okay. We used maneuver thruster to get aligned 



and aligning was okay. Also rate command was out 
to the tether line and does hold it. We made a 
burn and we had to correct the attitude with the 
thruster during the burn. We burned in orbit rate 
of plat mode. 
HAW Orb rate and plat mode. Okay. 



GEMINI 12 MISSION COMMENTARY , 11/13/66, 7:11 PM CST TAPE 192 

PAGE 2 

S/C Well, we did have to use a little maneuver 

thruster to correct our yaw. 

HAW Okay, and we would also like to know how it went 

during the purge. 

S/C Roger, the purge was normal. 

HAW Roger, very good. Okay, and would like to 

have you check and if you have less that 
5 frames left on the film that you used to 
photograph the eclipse you can go ahead and 



stow it and use the other film pack for tomorrow. 

S/C Roger, we have already done this. 

HAW Roger, very good. Okay, another little reminder. 

We would like for you to use as much water as 
reasonable. Drink during your meal preparation. 

S/C Roger, drink water, I have heard that before. 

HAW Yes, and you will probably hear it again. 

HOU Hawaii Com Flight. 

HAW Go Flight. 

HOU Let him know it also helps his fuel cell. 

HAW Yes, I am sure he is fully aware of that. But I'll... 

HOU Tell him anyway. 

HAW Of course, our main concern on this is to help 

out the fuel cell as much as possible. We're only kidding. 
S/C Roger. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:11 PM CST TAPE 192 



PAGE 3 

HOU Hawaii, is the computer on or off? 

HAW It is on, he just switched it to prelaunch 

mode. 

HOU Okay Did you send us the OBC? 

HAW Yes, it is on its way. 

HOU And are you starting to gyro compass the 

Agena? 

HAW That is affirm. 

HOU Okay . 

HAW And the L-band beacon $list went off and am 

turning approach lights off now. 
HOU Okay. 

HAW And they are off. And he just turned the computer 

off. 

HOU Roger, computer off. 

S/C Hawaii. ' 

HAW Go 12. 

S/C Roger, we are going to power down unless they 

want us to have anything going. 
HOU No we are ready to power down. 

HAW You might go ahead and have at it and we saw the compute 

,"ust come off. 

S/C Roger. We are just holding by on the platform. 

HAW Okay . 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:11 PM CST TAPE 192 

PAGE k 

HOU Hawaii Com Flight. 

HAW Go Flight. 

HOU I would like you to ask the crew for a general 

comment on how they feel about the control 
system for the remaining experiments S-51 
T-2 and D-10. 

HAW Well, we would like a general comment on how 

you feel about the control system in regard to 
remaining experiments which are S-51 T-2 and 
T-10. 

S/C This is 12. Rate command seems to hold it very 

decently. Big burns more than 6 or 7 we are going 
to have to use maneuver controls to stop it . ... 
you have to get certain angles or attitudes, I 
am not too sure. I think we can probably do it 
in rate command and try to get it, it will be a 
' little expensive on gas. 

HOU Okay, we are in pretty good shape on fuel. But he 

feels he can get the attitudes of the experiments 
reasonably well. 

HAW That is affirm Flight. 

HOU Okay. 

HAW Okay, we are pretty good on fuel at the present time 

so we are not worrying too much about heavier 
usage of fuel. 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:11 PM CST TAPE 192 

PAGE 5 

HOU Hawaii, did you send the C-band beacon on to 

track the spacecraft. 
HAW That is negative. 

HOU Well, go ahead and do that. 

HAW Okay. 
HOU Hawaii Com Flight. 

HAW Go Flight. 

HOU .What -we have left is the crew status report. 

When they are ready to pass it out we will 

stand by at CSQ and Tananarive. At RKV 

and Tananarive. 
HAW Okay, about all we have left for this day 

is crew status report and we will stand by 

over RKV and Tananarive for that. 
S/C Okay, ... Houston ... rerendezvous , it might 

be accomplished. 
HAW You think you have a chance of accomplishing 

rerendezvou. 

S/C Well it depends upon how much gas^we use. 

But it could be done. 
HAW Okay, we have them thinking about it. 

Did you copy that Flight? 
HOU Affirmative. We will look at that and see 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 7:11 PM CST TAPE 192 

PAGE 6 

HOU what it looks like tomorrow. 

This is Gemini Control 52 hours 32 minutes 2 seconds into the 
flight of Gemini 12. You heard that conversation between the 
Cap Com - correction - between the Hawaii tracking station and 
Gemini 12, separation maneuver is complete, that is to separate 
it from the general vicinity of the vehicle. Purge was normal. 
They have stowed the eclipse film pack. They were advised to 
use asmuch water as reasonably possible during the meal preparation. 
Whereupon Astronaut Lovell said "I have heard that before". The 
L-band beacon is off, computer is off, they are going to power 
down. They have been given the okay to power down. Astronaut 
Lovell indicated that he felt they had enough fuel to accomplish 
tomorrow the S-51, T-2 and D-10 experiments. He indicated that 
probably would best be done through rate command. He said it 
would be a little expensive on gas, but he was then advised that 
they have plenty of fuel to go with. He was also questioned as 
to the possibility of rerendezvous and he replied in the affir- 
mative. So that will be determined this evening for an update 
on the flight plan for tomorrow's activities. We are going to 
stand by at the Rose Knot tracking ship and Tananarive for a 
final crew status report at 52 hours 33 minutes 36 seconds into 
the mission, this is Gemini Control. 
END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 7:32 pm CST Tape 193 

Page 1 



This is Gemini Control 52 hours 50 minutes 2 seconds into the 
mission of Gemini XII. The spacecraft is presently coming up 
on the acquisition point with the Rose Knot tracking ship off 
the coast, correction, off the west coast of South America 
should acquire at 32 seconds past the minute some 10 seconds 
from now. We will stand by for what ever the crew status report 
passes between the Rose Knot and the Gemini XII crew before 
their sleep period. We are standing by now. 



RKV is here Gemini 12 and agena 
RKV 

RKV Delta P lights are on and it looks like he is 

powered down. 
HOU Roger. 

RKV the picture is off and aligned. Disregard, it was 
off the 

HOU Okay, the up grade of plus 5 degrees pitch is 

Pitch position gyro 5 1 degrees. Did you copy? 
CSQ, Roger, stand by. We do not have any indication that 



HOU Say again, the agena guys weren't copying that. 

CS"Q Say again. 

HOU The Agena guys weren't copying that, your transmissions 

you can give it to them post pass. 
S/C Guess you're right, 

CSQ, Say again Bill. 

S/C Set your horizon sensors off to real low- 

Roger . 



GEMINI XII MISSION COMMENTARY 11-13-66 Tape 193 7:32 pm CST 

Page 2 



This is Mission Control. It does not look like we will have any 
crew conversation over the Rose Knot. It appears that the space- 
craft is powered down for their sleep period. They did get a 
go ahead to power down for the sleep period from Hawaii. We 
will have entered our sleep period therfore from the time we ap- 
proved they should enter it from the Hawaii tracking station some 
ten to twelve minutes ago. The black team is now off duty, 
Gene Knanz is flight director on the white team and is now on 
duty in the MCC. Pete Conrad is still Cap Com on duty here 
until midnight. At 52 hours 53 minutes 26 seconds in to the 
mission of Gemini XII this is Gemini Control.... 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 8:20 pm CST Tape 19b 

Page 1 



This is Gemini Control 53 hours 33 minutes 31 seconds in to the 
mission of Gemini 12. We originally reported there would be no 
more voice contact with the astronauts from the time they were 
given an okay for a sleep period, however, we did have some re- 
porting in from the crew and the final reporting was over Tana- 
narive remoted with astronaut Conrad here in the control center 
and we bring you a tape of that status report now. 



Tananarive remote 
HOU Tananarive go remote 

TAN Tananarive remote. 

HOU Gemini 12, Gemini 12, Houston through Tananarive 

over. 

S/C Roger , Houston 12 here. 

HOU Three quick items we'd like you to leave cryo 

quantities switch in the H2 position tonight. I 
would like a PQ.I reading please. And we weren't 
quite clear about whether you ate meal 3 Bravo 
today in addition to 3 Alpha and Charlie, over. 

S/C PQI 3 k percent. 

HOU Roger, copy 2k percent 

S/C Negative, 3 k percent. 3 k percent 

Hou Roger, 3k percent. 

S/C And we're consuming 3 Charlie at this time. 

HOU Roger, did you consume 3 Bravo for today. 

S/C Yeah, we chewed 3 bravo too. 



GEMINI XII MISSION COMMENTARY 11-13-66 8:20 pm CST Tape I9U 

Page 2 



HOU Ah, that's good boys, thank you very much and 

Good Night. 

This is Gemini Control (two B pumps is right though) 
Tananarive LOS 

This is Gemini Control 53 hours 35 minutes Ik seconds in to the 
Mission of Gemini XII, you heard that final recap over Tananarive 
with astronaut Conrad at the Cap Com here in the Control Center. 
We are now in a sleep period. The sleep period will terminate 
at 6l hours in to the mission or roughly 7 and l/2 hours from 
this time. The spacecraft is powered down, the apogee is 162.1 
nautical perigee 1^2.8 nautical miles, the QBMS system fuel is 
holding at 3k percent which is quite reasonable quite good. At 
53 hours 53 minutes 56 seconds in to the mission of Gemini XII 
this is Gemini Control.... 

END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 8:55 pm CST Tape 195 

Page 1 



This is Gemini Control 5k hours 8 minutes 31 seconds in to the 
mission of Gemini XII. The spacecraft is just passing out of 
the acquisition area of the Hawaii tracking station and the last 
word from Hawaii is that the spacecraft is "Go" all the way on 
systems. This is taken from telemetry readout. We have had no 
voice contact with the astronauts they are sleeping. They will 
be awakened in about 7 hours. At 5U hours 8 minutes 57 seconds 
in to the mission, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 9:57 p.m. TAPE 196 

PAGE 1 



This is Gemini Control, 55 hours, 3 minutes, 33 seconds into 
the Mission of Gemini 12. The position of the Gemini 12 
spacecraft during revolution number 35 is approximately 2 or 
300 miles west of India. The Coastal station tracking ship 
should acquire 55 hours, 17 minutes, 21 seconds. The space- 
craft is trailing the Agena vehicle by 37 nautical miles. 
The sleep period started at 53 hours and will continue through 
6l hours. According to our surgeon, the crew of Gemini 12 
is not asleep as of $k hours, U5 minutes into the mission. 
However, they are resting. He anticipates them to go to 
sleep at any time, possibly on the next readouts that we will 
get from Coastal station that will be indicated. The heart 
rates are for Lovell Jk per minute, Aldrin 7k per minute. 
Respiration rate - Lovell 16 per minute, Aldrin 18 per 
minute. Water intake is good. They are both well hydrated, 
eating all meals as scheduled - correction - they have eaten 
all meals as scheduled. The surgeon is well satisfied with 
their condition at this time. At 55 hours, h minutes, 59 
seconds into the mission of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-13-66 10:50 pm CST Page 1 

Tape 197 



This is Gemini control, 56 hours 3 minutes 3k seconds in to the 
mission of Gemini XII. The position of the Gemini 12 spacecraft 
is currently approaching the west coast of South America. The 
Rose Knot tracking ship now has acquisition of the spacecraft 
and will have for some k minutes more. The apogee of the space- 
craft is 162.2 nautical miles perigee IU3 nautical miles. Coastal 
Sentry reports at 55 hours 2k minutes 30 seconds in to the 
mission some kO minutes ago, that both astronauts are asleep. The 
sleep period started at 53 hours in to the mission. It will end 
6l hours in to the mission. At 56 hours k minutes 25 seconds in 
to the flight of Gemini XII, this is Gemini Control 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/13/66, 11:50 FM CST 

TAPE 198, PAGE 1 

This is Gemini Control, 57 hours, three minutes, 31 seconds into 
the mission of Gemini 12. The Gemini 12 spacecraft at this time 
is just past the east coast of China. The Coastal Sentry has 
lost signal approximately three minutes ago. . At that time, they 
reported the spacecraft was go. They had no voice communication. 
However, they did have telemetry. Heart: rate on Astronaut Lovell 
stood at 50 beats per minute. Aldrin — 56 beats per minute. 
Respiration rate — Lovell — 13 beats -- correction, 13 per 
minute; Aldrin — 11 per minute. The weather in the - prime'Uefet 
Atlantic recovery area forecasts for tomorrow is good. Fifteen 
knot winds from the northwest. Five fobt swells. Four foot 
waves. 2,000 foot scattered to broken. The weather in the prime 
area for Tuesday also looks good. In the West Pacific, -Mid- 
Pacific and East Atlantic areas, the weather is anticipated to 
be acceptable for both Monday and Tuesday, Tuesday being the 
planned landing time. At 57 hours, four minutes, 52 seconds 
into the mission of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 12:50 AM CST 

TAPE 199, PAGE 1 

This is Gemini Control, 58 hours, three minutes, 31 seconds 
into the flight of Gemini 12. The position of the Gemini 12 
spacecraft is presently over Africa in the 37th revolution. 
Coastal Sentry should acquire 58 hours, 28 minutes, 17 seconds 
or 2k minutes from now. We have had no voice contact with the 
astronauts. None was planned. Gemini 12 has been in a sleep 
period for some five hours and five minutes. They now stand at 
two hours, 56 minutes roughly to wake-up time. Flight Director 
Gene Kranz and the controllers here at the Control Center are 
updating tomorrow's flight plan, which should include the second 
and last stand-up EVA — extravehicular activity, the D-10 ion 
sensing attitude control experiment; the S-51, sodium vapor 
cloud photographic experiment; the S-29, Libration region 
photography experiment; and also the T-2, manual navigation 
sightings of celestial bodies. One celestial body to be sighted 
in the T-2 experiment will be the star — first magnitude star 
Betelgeuse. It's interesting in that this star is 200 million 
miles in diameter. That's some 1*+ million miles larger than the 
diameter of the earth's orbit around the sun. Gemini 12 now 
trails the Agena some 71 miles. It will gradually fall farther 
and farther behind. At 58 hours, five minutes, 3k seconds into 
the mission of Gemini 12, this is Gemini Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 1:50 AM CST 

TAPE 200, PAGE 1 

This is Gemini Control, 59 hours, three minutes, 31 seconds 
into the mission of Gemini 12. The Gemini 12 spacecraft is 
approaching the west coast of Africa. The Rose Knot tracking 
ship should have acquisition by telemetry in approximately 
seven minutes. We have had no voice contact, as was expected 
for some while now. The sleep period is now standing at six 
hours and five minutes. It's one hour, 56 minutes to wake-up 
time. Heart rates are Lovell — U6, Aldrin — hy. Respiration 
rates — Lovell — Ik, Aldrin - 11. These readings were taken 
from the last pass over the Coastal Sentry tracking ship. At 
this time in the mission, all goes well with Gemini 12. This 
is Gemini Control at 59 hours, four minutes, 31 seconds into 
the mission. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll+/66, 2:50 a.m. CST Tape 201 

Page 1 



This is Gemini Control, 60, 3 minutes, 32 seconds into the 
mission of Gemini 12. The position of Gemini 12 is over the east 
coast of China. Coastal Sentry has just acquired. We have no 
voice contact, nor is any planned. The sleep period now stands at 
7 hours and 5 minutes . It should be approximately 56 minutes to 
wakeup time. An updated flight plan for today's activities, should 
be coming up very shortly. We are standing by for it. We anticipate 
we will have the second standup EVA, we will have the D-10, the ion 
sensing attitude control experiment, the S-51, sodium vapor cloud 
photography experiment, the T-2, manual navigation sightings of 
celestial bodies experiment, and the S-29, libration regions photo- 
graphic experiment. The weather in the prime landing area in the 
west Atlantic is considered to be good for today with 15 knot winds 
from the northwest, five foot swells, four foot waves. The ceiling 
is anticipated to be 2000 feet, scattered tc broken. Tuesday also 
looks good. It looks as good as Monday or better. The weather in 
the east Atlantic, west Pacific, and mid-Pacific landing areas, 
secondary landing areas is also acceptable. At 60 hours, 5 minutes, 
11 seconds into the mission of Gemini 12, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lV66, 3:32 A. M. CST 

Tape 202, Page 1 

Gemini Control Houston at 60 hours, k6 minutes now into the 
flight of Gemini 12. Jim Lovell and Buzz Aldrin are now in their 
38th revolution, the tag end of their 38th revolution. They're 
nearing acquisition with the Rose Knot Victor. We expect the 
crew to be awakened at this time and we'll stand by for any 
conversation that will pass between the Cap Com aboard the Rose 
Knot Victor and the Gemini 12 flight crew. Standing by now this 
is Gemini Control. 



RKV Gemini 12, RKV. 

S/C RKV, 12. 

RKV Good morning. 

S/C Is it morning already? 

RKV Well, it's about that time. It's around, oh, 

1:15 in the morning here. 
S/C Okay, we'll believe you. Okay. 

RKV We'd like you to turn your X-Ray and beta off 

at this time if you would. 
S/C All right. 

RKV And you can start a fuel cell purge at your 

convenience, 2 then 1. 
S/C Fuel cell purge, 2 then 1. 

RKV Give us a mark when you start, please. 

S/C Starting fuel cell purge now. 

RKV Roger, copy. Okay, we'll just talk back and 

forth here a little bit while you're purging. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 3:32 A. M. CST 

Tape 202, Page 2 



RKV On this pass you'll be getting a flight plan 

update over Canary, and suggest you start your 
eat period as soon as you leave us here, and be 
advised that during the night your spacecraft 
looked real good on the ground. 

S/c Sounds good. We'll start breakfast and standing 

by for the flight plan update over Canary. 

RKV Okay, and also they'll probably be updating you 

on the phase adjust at that time. 

S/C Roger 

RKV What did you say, again, 12? 

S/C I was wondering if that was for another eclipse. 

HOU RKV, Houston Flight. 

RKV Go ahead, Flight. 

HOU Tell them that what we're going to try to do today 

and we'll start updating them over Canary, is try 
to get some of the high priority items done. To 
start with we're going to do S-51 this morning. 

RKV Okay. 

HOU Send us a Gemini Bravo. 

RKV 12, they're going to be updating you over Canary 

as to some of the high priority items this morning 
and get ready for the S-51. 

S/C Roger. 

HOU RKV, Houston Flight. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 3:32 A. M. CST 

Tape 202, Page 3 



RKV Go ahead, Flight. 

HOU Did you get the X-ray off, the beta off? 

RKV That's the first thing we told him. I'll confirm 

it with him. 
HOU Okay. He got it all. 

RKV Say again. 

HOU He confirmed it. 

RKV He gave me a roger when I told him to turn it off. 

HOU Roger . 

RKV Tape dump complete. 

(PAUSE) 

Gemini Control Houston. We're still in our pass over the Rose 
Knot Victor. There's no conversation going on at the present time. 
The Gemini 12 crew is probably involved in their fuel cell purge. 

r 

RKV Could you go to cryo switch to 0^, please. 

HOU Don't forget your pumps, RKV. 

RKV And would you turn your A pumps on at this time, 

both primary and secondary. 
RKV Okay, would you switch your cryo switch to 0^ 

and leave it there, please. 
RKV He has his A pumps on, Flight. 

HOU Roger. 

RKV .Okay, 12, you're just about our LOS. We'll see 

you next pass around. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 3:32 A. M. CST 

Tape 202, Page h 



S/C 



Roger . 



HOU 



TJCV from Flight. A Bravo Gemini LOS. 



RKV 



Say again, Flight. 



HOU 



Gemini Bravo at LOS. 



RKV 



Roger. We have LOS of both vehicles. Both 



vehicles are go. 



Gemini Control Houston, 60 hours, 55 minutes now. We've just 
had loss of signal with the RKV. The next station to acquire will 
be Canary. This is at 6l hours, seven minutes into the mission, 
and over Canary the Cap Com there will pass on a flight plan update. 
Starting over Canary the Gemini 12 crew will power up their platform. 
This is scheduled to take place at 6l:07. At 6l:Vf , phase adjust 
maneuver, a small maneuver of some 5«5 feet per second retrograde is 
planned. And at 62:23 over the RKV, we'll have a crew status report. 
62:31, over Antigua, a flight plan update and a planned landing area 
update. At 62:1+0, we'll start our first pass for the S-51, Sodium 
Cloud Photography. At 63:15 through 63:1+8, we'll have the T-2 experi- 
ment, Mode A, Sequence 1. The T-2 is the Space Navigational Sightings 
Experiment utilizing a space sextant, handheld. This will be done 
with the helmets and gloves off and the stars to be sighted with the 
sextant are Betelgeuse and Rigel. At 63:50, the Gemini 12 crew is 
scheduled to start their EVA preparation for their second standup EVA. 
At 6U:15, the crew will start their second pass on the S-51 experiment. 
6U:30 tnrough 61+: 50, the crew will be involved in EVA preparation. 
6*+: 50 we're scheduled to depress the spacecraft and from 61+: 50 through 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 3:32 A. M. CST 

Tape 202, Page 5 



65:^0 the standup EVA is scheduled. At 65:UO the hatch is scheduled 
to be closed and repressing the spacecraft to begin. At 60 hours, 
58 minutes now, this is Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 3:53 a.m. CST Tape 203 

Page 1 



This is Gemini Control Houston, 6l hours, 6 minutes into the 
flight of Gemini 12 at this time. The Gemini 12 spacecraft with 
its crew, Command Pilot Jim Lovell and Pilot Buzz Aldrin, is now 
approaching acquisition with Canary. The Canary station will 
pass up the flight plan update to the crew. We're acquiring now, 
so we are standing by. 



CYI TM solid, Gemini and Gemini is go. 

Gemini 12, Canary Cap Com. 
S/C Good morning there, Canarys, 12 here. 

CYI Good morning. How are you this morning? 

S/C That was a short night. 

CYI Okay. Got a couple of bits of info for you 

here. First of all we're setting up the phasing 
maneuver because we were not able to burn the 
Agena last night and so we are giving you the 
phase maneuver to set up the position for 
tomorrow. 

S/C Okay. 

CYI And I have the phasing maneuver when you are 

ready to copy. 
S/C Ready to copy. 

CYI Okay. Purpose is phase adjust GETB 6l *+7, 

Delta V 5.5, burn time 09 second, yaw 060, 
core 25, 90055, core 26, 27 all zip. Thrusters 
forward, maneuver retrograde. Over. 



GEMINI 12 MISSION COMMENTARY , ll/lU/66, 3:53 a.m. CST Tape 203 

Page 2 



S/C Roger, under stand, phase adjust maneuver GETB 

6l k"J i+7, Delta V 5-5 feet per second, duration 
9 seconds, yaw zero, pitch zero, address 25 - 
90055, address 26, 27 - zeros, forward thrusters, 
maneuver retrograde. 

CYI Affirmative . 

S/C Okay. 

CYI I've got a notal update for you now. 

S/C Roger, go ahead. 

CYI Okay, time 61 00 58, rev 39, ^0.9 degrees west, 

right Ascension. 10 + 36. 
S/C . ■ . Roger, would you give me the degrees again? 

CYI 40.9 west. 

S/C " Roger. 

CYI ■ Okay, one other item here. The Agena is out of ACS 

gas so we won't be maneuvering it any more. 
S/C Sorry about that. 

CYI Okay, I've got a flight plan update for you now. 

S/C Roger, go ahead. 

CYI Okay, 6l 07, power up the platform, 6l 00 to 62 15 



eat period. 6l 30 align platform. And at 6l V7 47 
the phase adjust maneuver that I gave you. At 62 23 
at the RKV we'll take a crew status report. At 
62 31 at Antigua, they'll give you block 7 PLA 
update and also your S-51 update. And 62 k6 S-51, 
first pass. At 63 Ik i+3 sunset, T-2, load A, sequence 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 3:53 a.m. CST Tape 203 

Page 3 



63 50 to 6k 15, start EVA prep. At 6k 05 have an 
S-51 update, 6k 21 S-51 second pass, 6k 30 continue 
EVA prep, at 65 17 56, will be your EVA sunrise time. 

S/C Roger, say again 65 17 56? 

CYI That's affirmative. EVA sunrise time. 

S/C Roger. 

CYI And at 66 26 at Carnarvon, they'll give you another 

flight plan update and at 67 15 end of post-EVA 
period. That's the end of the flight plan update. 

S/C Roger, understand. 

CYI And your systems are looking real good down here. 

S/C Roger, let me go over a couple that I'm not too 

sure of. 63 Ik Ik was sunset for T-2? 
CYI Negative. 63 lk 1+3 . 

S/C Ik h3. 

HOU Kano go remote. 

CYI We've got about a minute to LOS, here, 12. 

S/C Roger. I have that update. 

HOU Kano go remote. 

KNO Kano is remote and we have acquisition. 

HOU Gemini 12, Houston Cap Com through Kano. 

S/C Roger, Bill. 

HOU Morning. Say, Jim, for your second standup EVA 

we'd like for you to shoot some pictures after 
sunrise of the star field you took in the night- 
time if you think you have time for it. How do 
you feel about that? 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 3:53 a.m. CST Tape 203 

Page h 



S/C You want us to take some pictures after sunrise 

of the star fields we took during the night, is 

that what you said? 
HOU That's correct. We can give you some pointing 

commands if you're agreeable and if you are ready 

to copy. 

S/C Roger. We're ready to copy. We'll See what we 

can do about it. 

HOU Well, let me give you these and give you a chance 

to think about it. In your hardsuit checklist 
for your sunrise pointing, the sun will be yaw 
1+7 degrees right, on the horizon. Okay, for 
your post-sunrise pictures, at sunrise + 7 minutes, 
that's at 3^ minutes on the elapse timer, we'd 
like you to pitch up 125 degrees. 125 degrees up, 
yaw 20 degrees north. We'd like you to take 
several one second photographs. Taking care to 
keep the sun off the camera and off the any 
part of the spacecraft the camera might see. 
Another note we have for you is for your night 
stars, we'd like for you to stress Orion and 
possibly work down in the regions toward Gamma 
Velora. 

S/C Okay. 

HOU Could you tell us if you have any water stored 

in bags on the spacecraft at this time? 



GEMINI 12 MISSION COMMENTARY, 11/14/66 » 3:53 a.m. CST Tape 203 

Page 5 



S/C We just started preparing breakfast so we do 

have water and food in one meal. 
HOU Okay, mighty fine. We just wanted to make sure 

you didn't have any bags with water in them when 

you depress the cabin. 
S/C Oh. No not this time. 

Houston, 12 here. We pitch up 125 and yaw to the 

north. That's a yaw first, pitch? 
HOU Negative. Pitch up and then yaw and we are assuming 

you're having the camera on the S-13 bracket this 

time . 

S/C Roger, understand. 

HOU Okay, think that over if you think you could swing 

it; it would give us some pretty good data here. 

S/c Okay, we going to have two other platform updates? 

HOU That's affirmative. 

don't 

S/c Okay, why / > we get appointing command on the 

eight ball ...? 

HOU That's what this is. That's on the eight ball, 

125 degrees up. 

S/C Okay, then there must be a yaw first and then 

pitch. 

HOU Standby. 

Okay, we'll have to double check that and give 
you some eight ball readings over . . . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, U:03 A. M. CST 

Tape 20h, Page 1 



CYI 



Okay, we'll have to double check that and give 



you some late followings over the next pass. 



S/C 



Roger . 



CYI 



You've got 30 seconds to LOS, Gemini 12. 



CYI 



LOS, LOS. 



Gemini Control Houston, 6l hours, 18 minutes now into the flight 
of Gemini 12. The phase adjust burn passed on to the crew over Canary 
- this is a preliminary maneuver to establish a standoff position for 
tomorrow between the Gemini 12 spacecraft and its Agena target vehicle. 
Initially, it had been planned to burn the Agena following separation 
for this maneuver, but this was not possible and it was not possible 
because we were out of Agena ACS gas. The usage of Agena ACS gas was 
heavy because the Agena was loaded with propellant since we made no 
PPS burn for high apogee in this mission as had been originally planned 
At 6l hours, 19 minutes into the mission now, our next station to 
acquire will be the Coastal Sentry Quebec. This will be at 6l hours, 
kl minutes, k2 seconds and this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll+/66, k:27 A. M. CST 

Tape 205, Page 1 

Gemini Control Houston, 6l hours, kl minutes into the flight 
of Gemini 12 at this time. Command Pilot Jim Lovell and Buzz Aldrin 
are approaching acquisition with the Coastal Sentry Quebec. We 
expect acquisition momentarily with the Coastal Sentry Quebec in 
the western Pacific and we're standing by now for that pass. 



CSQ AOS Agena. 

HOU Roger. 

CSQ Flight, CSQ. 

HOU Go ahead. 

CSQ We've got telemetry solid on Gemini. 

HOU Roger. 

CSQ Spacecraft is go. 

HOU Roger. 

CSQ And we got the Delta P lights and I've got AOS 

on Gemini. 

HOU Roger. 

HOU CSQ Cap Com, AFD. Would you give us contingency 

Charlie on Agena? 

CSQ Roger. 

HOU CSQ, Houston Flight. 

CSQ Flight, CSQ. 

HOU Okay, Bill, thanks for staying up. This data 
looks like the fuel cells don't look too bad. 

CSQ Sure looks like we've got a good spacecraft. 

HOU Yeh, we'll see you in the morning. 



GEMINI 12 MISSION COMMENTARY, ll/lty66, k:27 A. M. CST 

Tape 205, Page 2 

CSQ Okay. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 4:53 a.m. CST Tape 206 

Page 1 



Gemini Control Houston, 62 hours, 7 minutes into the 
flight of Gemini 12 at this time. Jim Lovell and Buzz Aldrin 
are currently passing over the south Pacific in their Gemini 12 
spacecraft. We've been out of contact for awhile since they're 
passing well to the south of both Canton and Hawaii tracking 
stations. Meanwhile in Mission Control Houston, Mr- Francois 
Pene, a representative of the French government, is actively 
involved in coordinating activities leading up to the Centaur 
launch this morning from Hammaguir, Algeria-. The sodium rocket 
will be launched in support of the S-51 photographic experiment. 
Here the pilot takes pictures of the sodium trail using his 
Maurer 70 mm camera with a special filter and film for yellow 
sodium light. During this time, the command pilot holds 
attitudes and records times of picture taking. Both Jim Lovell 
and Buzz Aldrin will be wearing special goggles during this 
experiment. The purpose of the experiment is to measure by 
photographic techniques, the wind velocities in the upper 
atmosphere. This is accomplished by ejecting a sodium cloud 
from the Centaur sounding rocket and the pictures taken of the 
clouds measured from about 60 to 90 nautical miles. The rocket, 
when launched from Hammaguir, Algeria, will eject a cloud from 
about 37 to 97 nautical miles. This cloud will be a very faint 
yellow or almost whitish cloud and when we first see it, it 
should appear as an inverted teardrop. As the spacecraft is 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, U:53 a.m.CST Tape 206 

Page 2 



swung around to the side, it should appear as a kind of 
mushrooming horseshoe. Now one point worth mentioning here 
the Earth will be about 250 times brighter than the cloud. 
We are currently looking at a Centaur liftoff time of 62 hours, 
kl minutes, 58 seconds GET. Our T-0 time for the experiment 
or the start of picture taking is at 62 hours, h6 minutes, and 
8 seconds, GET. A little bit about the Centaur rocket. It is 
about 20 feet long, it has a body diameter of some 11 inches. 
The maximum launching weight is 1080 pounds approximate. And 
performance speed at approximately 70,000 feet would be 3>378 
miles per hour. This is Gemini Control Houston as the Gemini 12 
spacecraft continues its quiet pass across the south Pacific, and 
at 62 hours, 10 minutes, Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll+/66 s 5:09 A. M. CST 

Tape 207, Page 1 

Gemini Control Houston, 62 hours, 23 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is approaching 
acquisition with the Rose Knot Victor. This is the Rose Knot 
Victor located - the ship located off the western coast' of 
South America. This will be the last pass of the morning over 
the Rose Knot Victor tracking station. We expect a crew status 
report at Rose Knot. We're standing by now for acquisition and 
this is Gemini Control. 



RKV Gemini 12, RKV. 

S/C Gemini 12. 

RKV Roger, stand by for your crew status report. 

S/C is 191U AOk, 8 point 

RKV In both 

S/C Yes, both 

RKV Roger 

S/C Roger, we slept about 5 hours... 

RKV quality of the. sleep period. 

S/C Fair. 

RKV Fair. Roger, I have a PQIA when you're ready to 

copy. You ready? 
S/C Stand by. Go ahead. 

RKV Area kl dash Alpha Charlie, 63:1+8:53, 20 + 1*9, 

26 + 26. Area 1+2 dash 1 Bravo, 65:15:35, 20 + 
1+9, 26 + 27. Bank angles for both areas, roll 
left 85, roll right 95. Weather in both areas, 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 5:09 A. M. CST 

Tape 207, Page 2 



good. No required. Did you copy? 

S/C Roger, we copy. 

RKV I'll get the rest to you a little bit later. 

S/c Roger. Do you want the status of this phase 

adjust burn? 
RKV Okay, go ahead. 

S/C Roger, well, it was very poor. By the time we 

got the platform aligned - we did not get the plat- 
form aligned by the time we burned. We attempted to 

burn but We. did not have enough time to get 

the platform aligned by the time we powered up. 
Everytime we either pitched or yawed we got left 

roll because it We got off at rate command 

in high orbit and then the diverge... by using 
maneuver thrusters until we get all the rates damped 
out and then we can then align the platform. This 
requires quite a bit of time and to keep your flight 

planning any will have to be turned over to 

....time to do it. We also used about 5 percent of 
our fuel to align the platform this morning - k per- 
cent, from 3^ to 30 percent. 

RKV Roger, copy. 3^ to 30 percent. On platform align- 

ment . 

HOU How long did it take? 

RKV How long did it take? Did you figure? How long did 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 5:09 A. M. CST 

Tape 207, Page 3 



it take to align it? 
S/c About - I'd say about 25 minutes to 30 minutes 

just to stay aligned, to get the position. 
HOU Roger, understand. 

S/C gave us the time to align the platform after 

and unfortunately we were just going into 

darkness. At that time it was a very good hack 
and .... to get the thing started but the attitude 
problem caused us to drift off. 

RKV Roger, they'll pick the rest of this information 

up with you at the next site. We're just about at 
our LOS now. 

S/C Roger. 

HOU Send us a main, RKV? 

RKV Gemini main? 

HOU Affirmative . 

RKV Okay, did you copy all that information, Flight? 

HOU Affirmative. And also a Gemini Bravo. 

RKV Gemini Bravo. We've had LOS both vehicles. 

Gemini Control Houston, 62 hours, 29 minutes now. The next station 
to acquire will be Antigua at 62 hours, 31 minutes into the mission. 
This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 5:l8 a.m. CST Tape 208 

Page 1 



Gemini Control Houston, 62 hours, 31 minutes into the mission 
now. We are standing by for acquisition at Antigua. 

S/C Okay, Houston, 12 here. 

HOU Roger, I have your S-51 update. 

S/C Roger. 

HOU Roger, S-51. 62 56 08, yaw 28 degrees north, pitch 

12 degrees down. GMT 11 32 hi. Copy? 

S/C Roger, understand at 62 k6 08, S-51. I have the yaw 

and pitch, but what was that last? 

HOU I understand you want a GMT time acq, is that correct? 

S/C No, we want a Delta T, when to take pictures if we 

don't see it. 

HOU Roger, start at that time to take pictures. We'd like 

you to take, besides the sequence camera, 12 exposures 

with the Maurer. 

You understand, 12? 
S/C Roger, Houston. Twelve Maurer exposures. 

HOU Roger. That's whether you see the cloud or not. 

And standby for a GET time acq. At 63 33 10. 

1 Mark. 62 33 10. 
S/C Roger . 

HOU I have your S-51 second pass when you are ready to 

copy. 

S/C Okay. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 5:l8 a.m. CST Tape 208 

Page 2 



HOU Gk 20 59. Yaw 12 degrees north, pitch 11 degrees 

down. We'd like you to take 6 exposures with the 
Maurer. Over. 

S/C Roger. I have that. 

HOU And with respect to your standup EVA post-sunrise 

stars. You ready to copy? 
S/C I want to get the last part of that. 

HOU Roger, I have a pointing angles for your post-sunrise 

EVA stars. Over. 
S/C Roger. 

HOU Okay, that's yaw 160 degrees north, pitch hO degrees 

up. Pointing is not critical. 
S/C I'm glad you said that because its going to be list 

about 30 degrees. 
HOU Its going to be what? 

Roger, that's fine. Just spray the general area 

with exposures if you think you have time. 
S/C Is there any pre-sunrise stars? 

HOU Pre-sunrise stars. We'd like for you to concentrate 

on Orion and in the area from Orion to Gamma Velorum. 
Would you like pointing for that? 

S/C It might be helpful if we're to get to the sun at 

sunrise, we'll need a good to fair amount of time 
to get down there. Especially hardsuit with our 
attitude system that's not workinp tco well. How 
about giving us a little rundown on the priorities. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66 5:l8 a.m. CST Tape 208 

Page 3 



Which is more important? 
HOU Orion is first priority. If you have time work 

your way down to Gamma Velorum. Take as many 
pictures as you think you have time for. We'll 
give you an Orion pointing command some station 
prior. 

S/c Roger, understand. I meant the priority between 

Orion, Gamma Velorum and the sunrise pictures. 

HOU Sunrise is number one priority. 

S/C Yeah. That 'means we've got to be there. 

HQU That's affirmative. 

Thirty seconds. 

Gemini 12, if you recheck your biomed circuit 

breaker . 
S/C That's affirm. 

HOU ' Thank you and we're at LOS. 

Gemini Control Houston, 62 hours, 37 minutes now into the 
flight of Gemini 12. The next station to acquire will be Canary. 
This is at 62 hours, kO minutes, k6 seconds into the flight. 
And during this pass, the Gemini 12 crew is expected to perform 
the S-51 experiment. The sodium cloud photography experiment 
during this pass. So at 62 hours, 38 minutes now, this is Gemini 
Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 5:27 a.m. CST Tape 209 

Page 1 



Gemini Control Houston, 62 hours, ko minutes now into the flight 
of Gemini 12. Jim Lovell and Buzz Aldrin are approaching acquisition 
now at Canary. It is during this pass, they are expected to perform 
the S-51 experiment. We are standing by now. Standing by for 
acquisition with Canary. 

CY£) Gemini 12, Canary Cap Com standing by. 

Gemini Control Houston. Our countdown clock shows ^6 seconds 
now for the liftoff time of the French Centaur rocket and we are 
standing by. 

■ Gemini 12, Canary. Sending you a TX. 

We show T-0 and we are standing by. 
We have confirmation of Centaur liftoff. 



CYI Houston Flight, Canary Cap Com. 

HOU Yeah, Canarys, the launch went, looks nominal so far. 

CYI Roger. I'll relay that to 12. Gemini 12, Canary 
Cap Com. 

S/C Go ahead. 

CYI Okay, S-51 is on its way. 

S/C Okay. 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 5:27 a.m. CST Tape 209 

Page 2 

Gemini Control Houston. The French confirm a nominal launch 
time right on the money. 



S/C Canarys, 12. 

CYZ Go Canary -- Go, 12. 

S/C We never got a Delta T as to when to start taking 

pictures and we — we didn't see the rocket. 

CYI Say again, you want a Delta T for what? 

S/C We want a Delta T after the acquisition in time 

to start taking pictures, hut we don't see it. 
They never gave it to us. 

CYI Okay, standby one. 

HOU Start at the acq time. 

CYI Say again? 

HOU Start at the acquisition time, that we gave him. 

CYI Okay, 12, Canarys. They want you to start at the 

acquisition time that they gave you. 
S/C Okay, thank you. 



The Gemini 12 crew should have begun their photography some 
10 to 15 seconds ago. 



CYI 

HOU 



Houston Flight, Canary Cap Com. 
Go ahead. 



GEMINI 12 MISSION COMMENTARY, ll/lA/66, 5:27 a.m. CST Tape 209 

Page 3 



CYI Okay, he's in position at this time for the S-51. 

HOU Roger . 

CYI And the tape dump is complete. 

HOU Roger . 

Canary, send us another A, Gemini. 
CYI Roger. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lV66> 5:35 A. M. CST 

Tape 210, Page 1 

No conversation with the crew. They are no doubt busy at 
this time. 



CYI Gemini 12, Canary Cap Com. About one minute 

to LOS, we'll be standing by. 
S/C Roger. No joy. 

CYI Roger, understand. Did you copy that, Flight? 

HOU Copied. 

CYI Houston Flight, Canary Cap Com. We've had LOS 

both vehicles and both vehicles were go. 
HOU Kano go remote. 

KNO Kano's remote. We have acquisition. 

HOU Gemini 12, Houston Cap Com, through Kano and 

standing by. 

S/C Roger, Houston. We took the ... 

HOU Roger, understand you took the photographs any way 

but no joy. 
S/C That's affirmative. 

HOU Okay, nice try. 

HOU We're right on the ragged edge of Kano here. We've 

got about one minute to LOS. 
KNO Kano has LOS. 



Gemini Control Houston, 62 hours, 52 minutes now into the flight 
of Gemini 12. We've just had LOS at Kano. During our next revolution 
over the Sahara and at about 6U:15 ground elapsed time, the time passed 



GEMINI 12 MISSION COMMENTARY, ll/lV 66 > 5:35 A. M. CST 

Tape 210, Page 2 



to the crew by Bill Anders at Antigua; this is the time that our 
Gemini 12 crew will again attempt to photograph the Sodium Cloud 
which was launched in the French Centaur rocket over the Sahara, 
62 hours, 52 minutes, If- 3 seconds now, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 6:10 a.m. CST Tape 211 

Page 1 



Gemini Control Houston, 63 hours, 23 minutes into the flight 
of Gemini 12 at this time. Jim Lovell and Buzz Aldrin are now 
in their hoth revolution in the flight of Gemini 12. The space- 
craft is currently clocking an apogee of 158.3 nautical and 
11+3.3 nautical for a perigee. The Gemini 12 is now passing over 
Woomera. We sidestepped Carnarvon on this pass. We'll have no 
voice contact with the spacecraft although we are receiving data 
from the spacecraft on the ground. At this time, Pilot Buzz 
Aldrin should' "be involved with the handheld sextant; experiment. 
This is the T-2 experiment, space navigational sightings. Aldrin 
in the case of this experiment, takes sightings and marks the 
times for the sightings. The Command Pilot is busy recording the 
data and controlling the spacecraft attitude. . They are scheduled 
to perform this experiment at this time with the helmet and gloves 
off. At 63 hours, 2k minutes, ho seconds, this is Gemini Control 
Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , 11/14/66 » D =36 a.m. CST Tape 212 

Page 1 



Gemini Control Houston, 63 hours, 50 minutes into the flight 
of Gemini 12 at this time. The Gemini 12 spacecraft is still 
making its southerly pass over the Pacific, and at the present 
time, the French are counting down a second rocket. This was 
initially scheduled as a backup rocket. At Hammaguir, Algeria, 
a second rocket to be launched in conjunction with the S-51 
sodium cloud experiment. The French only a short while ago, 
proposed the launch of their backup rocket in this endeavor. 
We expect that the crew will receive an update regarding this 
during their pass over Antigua. At 63 hours, 51 minutes, this 
is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lU, 1966, 6:1+9 am CST 

TAPE 213, 
PAGE 1 



Gemini Control Houston, 6k hours 3 minutes now into the flight 
of Gemini 12. Jim Lovell and Buzz Aldrin now are nearing 
acquisition with Grand Turk, Grand Turk station. No doubt at 
this time they are heavily involved in their preparations for 
their second standup EVA. Also during this pass, during this 
pass over Grand Turk and Antigua we expect the crew to receive 
an update on S-51. Standing by now for conversation with the 
Gemini 12 crew. This is Gemini Control Houston. 



HOU Gemini 12, Houston Cap Com, over. 

SC Roger Houston, Gemini 12. 

ANT AOS Antigua. 

SC Houston 

HOU Roger, Houston. The spacecraft looks good, 



they have an S-51 info for you. The French 
are going to launch a second rocket. Your 
acq times are good for the second half. We'd 
like to have you start your photos at^your 
acq time and take eight exposures with the 
Maurer . Over . 

SC Roger, understand. (garble) How about 

putting back the EVA one rev so it will give 
us a little more time to get squared away? 

HOU I understand you are having trouble in EVA 

prep and your requesting us to consider putting 
the EVA back one rev, is that correct? 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 1^, I966, $:h9 am CST 

TAPE 213, 
PAGE 2 



Houston, I'll say again, we're running into 
a time difficulty due to the petroleum system 
and the fact that we've got a - can't really 
control the spacecraft plus do everything else 
and we'll try and get the S-51 but it might 
take us a little longer to get the EVA ready 
to go and we'd much rather take our title and 
do a good job then to rush into it and maybe 
open up hatch towards the end of the night 
period. 

Gemini 12, Houston, roger. You can plan your 
EVA one rev later. We'll update your times 
when we have a chance. 

Roger, Houston. . One more discretion, the only 
vay we can control yaw, right yaw, is with No. 12 
maneuver thruster. Now, what is your feeling 
on doing this EVA? 

Roger, we'll think that over. Okay? 

Gemini 12, Houston. We'd like for you to do a 

30-second 02 purge on both sections now, and 

would you check your delta P circuit breaker 

before you do it? 

Do you copy? 

Gemini 12, Houston Cap Com do you have your 

delta P lights on? 

That is affirmative, their on. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lU, 1966, 6:U9 am CST 

TARE 213, 
Page 3 



HOU Roger, copy. We show them now on the ground. 

I'd like to give you one more block PLA update 

if I could, if you are ready to copy. 
SC Houston you are coming in very weak, we can 

barely read you. 
HOU Roger, we'd like to give you one more PLA 

update. 
SC Roger. 

HOU Roger. k3-l alpha, 66 50 05, 20 + k9, 26 + 23, 

copy? 

SC What was that area number again Houston? 

HOU Area k3-l alpha. 

SC Roger, U3-1 alpha. 

HOU That will keep things going for a couple of :. 

revs and when we get squared away on a new 
flight plan we'll give you the rest of them. 

Gemini Control Houston, we still have acquisition over Antigua 
at this time. Presently there is conversation going on in the 
Control Center. Taking a quick look at updating our EVA plans 
and we are continuing to standby on this pass. 



HOU Gemini 12, Houston Cap Com, over. 

SC Roger Houston. 

HOU Roger, we are thinking that in order to avoid 

this yaw problem with the maneuver thrusters 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lk, 1966, 6ik9 am CST 

TAPE 213, 
PAGE 1+ 



during the EVA, considering the possibilities 
of holding the Maurer in your hand. How do 
you feel about that? 

SC Well we were just discussing that. 

HOU Okay, we'll start our plan with that in mind 

and when you have a chance to think about it 
a little bit more let us know. 

SC Roger. Bill, when we try align the platform, 

right now we're in SEF at PLAT, and if we 
control the range to almost nothing and then 
go to align, she stays. But if we don't do 
that, nothing is going to hold in rate 
command or PLAT or anything, it is just going 
to go. The only way we can stop it is with 
maneuver thrusters. 

HOU Roger, understand. You think you would 

develop to high a rate if on EVA? 

SC Well I don't know. We could probably do it if 

we just leave it in platform mode. Now for 
the T-2 experiment we just completed, we were 
able to align on the stars by using the maneuver 
thruster and very carefully using pluse mode. 
But of course, we won't be able to do that EVA 
if we can't fire number 12 thruster. 
HOU Roger . 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lk, 1966, 6:k9 am CST 

TAPE 213, 
PACE 5 

FD One minute to LOS 

Three minutes to Canary 
ANT LOS Antigua 

Gemini Control Houston, 6k hours 13 minutes, we've just had 
LOS with Antigua. The next station to acquire will be Canary 
at about one minute and 30 seconds from now. As you heard 
the EVA plan might be revised to move the time back one revo- 
lution later. This cropped up during this pass when Jim 
Lovell indicated to Cap Com, Bill Anders, that he can yaw 
right by - only by using the number 12 maneuver thruster. 
This of course will be under discussion in Mission Control. 
We are standing by now for acquisition at Canary. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 7:01 a.m. CST Tape 21k 

Page 1 



HOU Canarys, TM will be on at your acquisition. 

HOU Canary Cap Com, AID. 

CYI AID, Canary Cap Com. 

HOU The TM will be on at your acquisition. 

CYI Roger, how about the C-band? 

HOU Standby. 

It's also on. 

CYI Okay, and you want us to TX it off, right? 

HOU " Rog. 

CYI Okay, we have TM solid on the Agena. And it's 

go. 

HOU Roger, Canarys. 

CYI Okay, we have C-band track on the spacecraft, 

but no TM. 
HOU Roger. 

Have you tried the command at all? 
CYI That's affirmative. 

HOU Still nothing? 

CYI Still nothing. 

HOU Okay, maybe you better try circuit breakers, 

I guess. 

HOU Canary, from Flight. 

CYI Go ahead, Flight. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 7:01 a.m. CST Tape 2lU 

Page 2 



HOU You say you have no TM? 

CYI That's affirmative. 

HOU Okay, stand by, let me find out whether the S-51 

went. We don't want to interrupt that. Let's see, 
you have how much pass time you have left? Plenty. 

CYI Oh, we've got quite a bit yet. 

HOU Okay, standby. 

CYI Okay, TM's coming in now. 

HOU Roger . 

Canary Cap Com, Houston Flight. 

CYI Go ahead, Plight. 

HOU Okay, it went off okay. 

CYI Okay, fine. We've got TM now. 

HOU Okay, you might tell him that. 

Gemini Control. That was the Centaur rocket. 
S/C 12, Canarys. 

CYI Roger,. it looks good down here on the ground. The 

S-51 is on its way and is looking nominal at this 
time. 

S/C Roger . 

CYI Sending a TX. 

S/C Rog. 

(pause) 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 7:01 a.m. CST Tape 2lk 

Page 3 



Gemini Control Houston. We're still over Canary. No 
conversation transpiring at the moment. No doubt, the crew 
is very busy with the S-51 cloud photography. 



CYI Houston Flight, Canary Cap Com. 

HOU Go ahead. 

CYI Okay, his attitudes are good for S-51. 

HOU Roger . 

Send us another Gemini A, please. 
CYI Roger . 

HOU Send us an Agena main, too. An Agena main .also. 

CYI Roger . 

HOU Canary, from Flight. 

CYI Go ahead, Flight. 

HOU Okay, they have visual acquisition from the 

ground of the cloud on this one. 
CYI Okay. 12, Canarys. They've had visual 

acquisition of the cloud from the ground. 
S/C Wish we could say the same. That's where we 

ought to be. 

S/C Eight pictures taken. No observations. 

CYI Roger, understand. No joy. 

Gemini 12, Canarys. One minute to LOS. I need 

your LNS-51. 

S/C We saw no cloud, Canarys. We 1 looked and we had 

good pointing commands this time, and it's geod 
spacecraft control for a change. Couldn't see 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 7:01 a.m. CST Tape 2lk 

Page h 



a thing. 
CYI Okay. 

S/C You know what they say, Canarys. C'est la vie. 

CYI Roger } that. 

g/C Oh boy. This is what that 'means. 

Que, sara,sara. 
CYI We've had LOS both vehicles, Flight. 

HOU Roger. 

Kano remote. 
KNO Kano is remote. 

HOU Gemini 12, Houston Cap Com through Kano. 

S/C Roger, Houston. 

HOU Houston, Gemini 12 you're right on the ragged 

edge of Kano. We're not reading you. 



Gemini Control. We're at the outer ring of acquisition at 
Kano. We've had no real contact with the crew although we had a 
momentary contact. We're standing by. 



HOU Gemini 12, Houston Cap Com through Kano and 

standing by. 

S/C Roger. Houston, how do you read us now? 

HOU Reading you five by. You've got about U5 seconds 

to LOS. 

S/c Roger. We're right on the point that time, Bill. 



GEMINI 12 MISSION COMMENTARY, ll/lk/66, 7:01 a.m. CST Tape 2lk 

Page 5 



We sure looked and just goggled all ways, but 
we didn't see a thing. 
HOU Okay, real nice try and we're kicking around 

doing the EVA in plat mode with a handheld 
camera. 

S/c Roger. One other thing about S-51. There's a 

lot cloud coverage up there this time and this 
makes the area a lot brighter. 

HOU Understand, thank you. 

KNO Kano has LOS. 

Gemini Control Houston. 6U hours, 27 minutes now into 
the flight of Gemini 12. We've just had loss of signal over 
Kano. As you heard earlier, during our Canary pass, the sodium 
cloud following the launch of the Centaur rocket- was sighted 
from the ground; however, Jim Lovell advised that it was not 
seen from the spacecraft. However, he added that he felt that 
they had good pointing commands for their photography during 
this particular revolution. The however, it was considered 
very doubtful prior to this experiment that the crew would 
be able to see the cloud visually, even under optimum conditions. 
As we had indicated earlier, the desert surface is some 250 times 
brighter than the sodium cloud. At 6k hours, 29 minutes, this 
is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/llf/66, 7:33 A. M. CST 

Tape 215, Page 1 



Gemini Control Houston, 6U hours, 52 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is approaching 
acquisition with Carnarvon station. Carnarvon station in Aus- 
tralia and we're standing by for this pass over Carnarvon. 

CRO All systems are go on the Agena. 

HOU Roger. 

CRO 12, Carnarvon standing by. 

S/C Roger. 

HOU Carnarvon Cap Com, Houston Flight. 

CRO Go ahead. 

HOU Okay, check with the crew. We assume he's going 

ahead with his EVA prep. We'll talk to him over 
the states concerning the control situation and 
we'll have a recommendation over the states about 
EVA. 

CRO Okay. 

CRO Agena' s in track at Carnarvon. 

HOU Roger. 

CRO And we're showing activity on thrusters 2 and k. 

It's either that or he's opening and closing the 

circuit breaker. 
HOU Okay. 

CRO 12, Carnarvon. All your systems are go here on 

the ground. In regards to your control situation 



GEMINI 12 MISSION COMMENTARY, ll/lV66, 7:33 A. M. CST 

Tape 215, Page 2 



for EVA, we'll talk to you over the states. 
S/C Roger, understand. 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU You might ask him how the EVA prep is going, 

as they're progressing on with it. 
CRO Okayw How's your EVA prep coming along? 

s/c Well, we're working on it, Carnarvon 

CRO Roger . 

S/C We have some camera shuffling to do due to the 

S-51 experiment. 
CRO Okey doke. 

(PAUSE) 

No conversation with the crew at this time but we're still 
standing by as we pass over Carnarvon. 
HOU Carnarvon Cap Com, Houston Flight. 

CRO Go ahead. 

HOU Query the crew and see if they can copy kh dash 1 

Bravo and 1*5 dash 1 Alpha and that will take them 
quite a ways. We won't have to bother them for 
awhile then. 

CRO Okay. 

HOU Ithink we got to that point on the PIA's. 

CRO Okay. 

CRO 12, Carnarvon. Do you have time to copy two PLA 



GEMINI 12 MISSION COMMENTARY, ll/lV66, 7:33 A. M. CST 

Tape 215, Page 3 



updates? 

S/C We can take time. 

CRO Okay, if we give you these two it'll keep you 

updated there for awhile. We won't bug you too 
much. 

S/C Go ahead. 

CRO dash 1 Bravo, 68: 25:^1, 20 + 37, 26 +17; area 

1+5 dash 1 Alpha, 70:01:30, 20 + 18, 25 + 56. 
S/C Roger, do you have bank angle? 

CRO Roll left 85, roll right 95. 

S/C Okay, fine. 

CRO Flight, Carnarvon. 

HOU Go ahead. 

CRO Okay, we show them in platform mode and in that 

mode we're getting considerable activity on that 
thruster no. h. 

HOU Yeh, it's probably not getting anything out of 

it. It keeps trying. 
CRO Rog. One minute to LOS, standing by. 

HOU Carnarvon from Flight. We're seeing the same 

thing over here on that thruster. 
CRO Okay. 

CRO Carnarvon has LOS Agena. 

HOU Roger. 

CRO LOS Gemini. All systems go. 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 7:33 A. M. CST 

Tape 215, Page k 



HOU Roger. 

Gemini Control Houston. We've had loss of signal over 
Carnarvon. The crew is still involved in that prepartion for 
standup EVA and as was indicated to the crew, they will be 
updated during their stateside pass, regarding their extravehicular 
activity. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 8:2^ a.m. CST Tape 216 

Page 1 



Gemini Control Houston, 65 hours, 37 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is approaching 
acquisition range with the Eastern Test Range and we are standing 
by now for conversation that might transpire during this pass. 
Standing by, this is Gemini Control Houston. 

GTI AOS Turk. 

HOU Gemini 12, Houston Cap Com, over. 

S/C Roger, Houston, 12 here. 

HOU Okay, 12, we've been kicking this EVA thing 

around; we'd like to — our plan is to have 
you go EVA in plat mode and for Buzz to hold 
the Maurer in his hand for the photographs. 
How does that see to you? 

S/C Okay, Houston. You've seen us, but let's 

go over that. We'll be in SGS plat mode 
and for Buzz to hold the camera for photographs. 
Okay, now, here are the problems along that 
line. If Buzz is to take photographs of the 
sunrise, he needs a visor. Now, he can take 
the photographs up until the sun comes up, 
then of course, he can't look that way any 
longer . 

HOU Okay, be advised you have a ho degree field of 

view on the Maurer. You're going to be behind 
the hatch. The sun will be k7 degrees right, 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 8:2k a.m. CST Tape 216 

Page 2 



down 17 degrees. I'm pretty sure that Buzz is 
going to be in the shade. The question is, 
will he be able to get the camera looking at 
the sun? 

S/c Well, now that's another question. We don't 

know just how well we can handhold it, but we'll 
give it a try. Houston, 12. 

HOU Roger, we don't think there is a problem with 

Buzz and the visor as long as he doesn't look 
directly at the sun. We think that if he just 
holds the camera in the general area, he'll be 
okay. 

S/C Roger. What we'd like to do, we're almost 

prepared for EVA. We'd like to get out and 
over the hatch in daylight, get squared away, 
jettison the gear, do the exercise, and go 
into' the night pass all squared away for the 
photographs. Do you concur? 

ANT AOS Antigua. 

HOU Roger, will that be this daylight pass? 

S/C That's right. And we'll stay that way and 

when we go into the next daylight, we'll 
take the sun pictures and then we'll ingress. 

HOU Roger. How much longer do you think before 

you'll be ready for depress? 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 6:2k a.m. CST Tape 216 

Page 3 



S/C We have to go through a couple of suit integrity 

checks and that's about it. I'd say in 15 or 
20 minutes. - 

HOU Roger, stand by. 

Gemini 12, Houston, you're go for depress on 
your option. We would like to do the exercise 
over a manned site. Either Canarys or Carnarvon. 
At your choice. 

S/C Roger, you prefer over a manned site, roger. 

HOU That is affirmative. 

S/C We'll get all squared away and then we'll go 

ahead.. We'll check suit integrity checks. 

HOU Roger, I'm ready to give you some new times, 

here, if you're ready to copy. 

S/C Stand by. 

Okay, go ahead. 

HOU Roger, your sunrise time for this coming rev will 

be 66 h7 57. And I: say again, the sun will be 
k7 south, down 17. 

S/C Say again that time, please. 

HOU Sunrise 66 47 57. 

S/C Roger. The sun 66 kl 57. 

HOU Roger. Now, we'd still like you to try to get the 

night star photos if possible. Pointing is real 
loose, you can hold the camera up and just spray 
the area. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 8:2U a.m. CST 



Tape 216 
Page k 



S/C Roger, but you want me to keep — maintain 

the spacecraft in the plat mode SEF, is that 
correct? 

HOU That is affirmative. We'd like for you to concen- 

trate on Orion and the area down to Gamma Velorum. 

S/C Roger, understand. These are all one-second 

pictures, am I right? 

HOU That is affirmative. 

S/C Okay. 

HOU If you can, after sunrise, we would like to have 

you point the camera back 125 degrees, or roughly 
30 degrees behind the zenith and take another 
couple of pictures, or several more pictures, 
which will pick up about the same star field. 

S/C Roger, you understand though that we won't have 

to be outside to get the sunset to get these 
— to get these photographs because Orion will 
be rising all the time and it'll make it harder 
for Buzz to take the pictures. 

HOU Roger, we understand. You can take the pictures 

of Orion at any time during the night if you 
could just turn that camera back and point it 
back up over Buzz's shoulder, that's over 
his left shoulder, with the sun off the camera 
during the day and take several pictures, we'd 
appreciate it. But it's your option, if you 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 8:2^ a.m. CST Tape 216 

Page 5 



don't think you have time, don't do it. 
S/C Roger. How about some Hasselblad pictures? 

HOU Roger, understand Hasselblad. Say again on 

the Hasselblad. 

S/C We've got it all ready to go. We can probably 

get some of each. 
HOU Roger, and be advised that the weather over 

the States is exceptionally clear today. 
S/C Roger. Will we be over that? 

HOU It looks like if you're getting out this early, 

you'll probably have to come on in. 
S/C We can stay out if that's okay. 

HOU Stand by. We'll mull that over a bit, Gemini 12. 

Another point, if the Delta P lights bother you 
for the light — for the night pass, you can go 
turn the circuit breaker off. 

S/C Okay. That's not a bad idea. I think we will. 

HOU Gemini 12, Houston. I say again, if you try 

the pictures of the stars in the daylight, 
try keeping the sun off the camera, and 
possibly have the camera pointed so that it 
will not see any illuminated part of the 
spacecraft . 

S/C We understand. The stars in the daylight. 

HOU Roger . 



GEMINI 12 MISSION COMMENTARY, ll/lk/66, Q:2h a.m. CST Tape 216 

Page 6 

S/C Roger, the general area is 30 degrees after the 

zenith, is that affirmative? 
HOU Roger, that's valid for about five minutes after 

sunrise, about 30 degrees after zenith, 15 north 

tn 20 south of track. 
S/C Roger. 
ANT LOS Antigua. 

S/C Maybe somebody can figure out the angles from the 

sun, if they have it handy here, because actually , 
the stars will be at a 6th point relative to the 

HOU Okay, if you just bring it straight up from the 

sun to the zenith, about 120 degrees, you'll be 
in good shape. 

HOU Bermuda, remote. 

Bermuda, go remote,. 

BDA Bermuda is remote. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER lk> 1966, 8:3^ am CST 

TAPE 217 > 
PAGE 1 



SC Houston, 12. 

HOU Gemini 12 calling Houston, go ahead. 

One minute to LOS . 
SC Roger, Houston, 12. 

HOU Canary is in 2-1/2 minutes. 

SC Understand, 2-l/2 minutes. 

It looks like after this one you can call us 

the litter -bug flight. 
HOU Be advised you are at LOS and fading out. 

AID Canary Cap Com, AFD. 

CYI Houston, Canary Cap Com. 

AFD Roger, when you acquire the Agena you'll have 



the ACS on,geo rate on, horizon sensors on, 
it will be configured for 0, 0, 0 and flight 
control mode 1. They tried to set the thing 
up to see if they could stabilize it with a 
little bit of ACS gas that might possibly be 
remaining in there but they said they didn't 
have any success. 
CYI Okay, we'll take a look at it. 

Gemini Control Houston, we've had LOS over Bermuda. The next 
station to acquire will 4 be Canary and it appears from the 
discussion that Gemini 12 crew will perhaps make a real-time 
decision as to exactly when to depress for their second 
standup EVA. They indicated they were GO for depress. This 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 13, 1966 , 8:3^ am CST 

TAPE 217, 
PAGE 2 

would move it up from what the time that we're initially 
talking aboTit,'and this would be at 1 revolution later. 
So it has become a Gemini 12 crew option. Standing by this 
is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll+/66, 8:38 A. M. CST 

Tape 218, Page 1 



Gemini Control Houston, 65 hours, 51 minutes now. We're 
approaching acquisition with Canary and we're standing by. 
Gemini Control Houston. 

Gemini Control Houston. We're coming up over Canary now. 
The hatch has not been opened yet and the cabin has not been 
depressed yet but we're standing by to see what transpires. 



S/C Roger, understand. We'll close the hatch 

after we've taken the pictures. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead Flight. 

HOU How do they look? 

CYI Okay, looking good so far. They haven't depressed. 

HOU Okay. The 0 2 pressure up okay? 

CYI Roger. 

HOU - You're go for depress then, huh? 

CYI As soon as he finishes his suit integrity check. 

HOU Roger. 

HOU. Canary Cap Com, Houston Flight. 

CYI Go ahead Flight. 

HOU You see the integrity of the check, send us the 

decay numbers post-pass. 

CYI Roger. 



Gemini Control Houston still standing by. 

Gemini Control Houston still standing by as we have some two 



GEMINI 12 MISSION COMMENTARY, ll/lV66, 8:38 A. M. CST 

Tape 218, Page 2 

minutes left in this pass over Canary. 



HOU Canary Cap Com, Houston Flight. 

CYI Go ahead Flight. 

HOU Gemini main and bravo. 

CYI Roger. 

CYI Okay, Command Pilot's suit is being pressurized 

at this time. I'm seeing integrity check. 
HOU Roger. 

CYI Gemini 12, Canary Cap Com. About a minute to 

LOS. Your suit integrity check is good. You've 
got a go for depress. 

S/C Roger, understand. Go for depress. 

Gemini Control Houston. You just heard the Canary Cap Com 
advise the Gemini 12 crew that they have a go for depress. 
HOU Kano go remote. Canary go local. 

KNO Kano's remote and we have acquisition. 

HOU Gemini 12, Houston Cap Com through Kano and 

standing by. 

S/C Roger, we're just about ready to depress. 

HOU Mighty fine. We'll be giving you exercises 

over Carnarvon. 
S/C You'll be what? 

HOU You'll be doing the exercise over Carnarvon. 

S/C Yeh, okay. I forgot about that. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 8:38 A. M. CST 

Tape 218, Page 3 



Gemini Control Houston. The exercise referred to there wj^s 
the arm lifting activity, lifting the arms to the helmet on the 
part of Pilot Buzz Aldrin during his extravehicular activity, the 
second standup EVA. At 66 hours, one minute now into the mission, 
we're over Kano and we're standing by. 

Gemini Control Houston. About two minutes to go on this 
pass over Kano and we're standing by as the Gemini 12 crew is no 
doubt quite busy at this time. 

HOU Gemini 12, Houston Cap Com. One minute to 

Kano LOS. Have fun. Be 22 minutes to Carnarvon. 

S/C Roger, Houston. We're going down now. We're 

. . . psi . 

HOU Roger, understand. 

Gemini Control Houston. Gemini 12 advises that their depressing 
now. They're down to l/2 psi cabin pressure. 

HOU Gemini 12, Houston at Kano LOS. Reading you 

on VOX. 

KNO Kano has LOS. 

Gemini Control Houston. We've just had LOS at Kano. The next 
station to acquire will be Carnarvon. This is at 66 hours, 26 min- 
utes, UO seconds into the mission or some 20 minutes from this time. 
The Surgeon advises that heart rates for the crew during this period 
this period of depressurization ranged from 50 to 70, which is an 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 8:38 A. M. CST 

Tape 218, Page k 



amazingly low figure but considering the heart rate pattern that 
we've seen throughout this mission it does not come as a surprise. 
Also, we have witnessed here a real time option exercised by the 
crew as to the start time of their second standup EVA. Initially, 
we had planned to pass up a fixed time some revolution later from 
the ground but in discussing the EVA preparations with the crew, 
Bill Anders after consulting with Flight Director Cliff Charlesworth, 
came back and indicated to them that they should go with their option. 
This they have done. So at 66 hours, 7 minutes into the flight of 
Gemini 12, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lh, 1966, 9:13 am CST 

TAPE 219, 
PAGE 1 



Gemini Control, Houston, 66 hours 26 minutes now into the 
mission. We're approaching acquisition at Carnarvon and 
we're standing by. 



SC That one I think may be illuminating -the hatch 

a little. 
SC Right . 

SC (garbled) 

LQVELL gay againj otrion is ; up there now, Buzz 

I'm sure. 

SC ft wasa)lovely show of the jettison. 

CRO Gemini 12, Carnarvon. 

SC Go ahead. 

CRO Okay, we're waiting for a little bit of solid 

sync on telemetry and then we'll have Buzz's 
exercise started, , okay? 

SC Okay. Thanks 'for the DPS burn. 

CRO That is to let you know we are here. 

NOVELL Take ft picture 0 f it Buzz as we head towards it. 

SC Carnarvon, 12. 

CRO Go ahead 

SC Are your batteries - thrusters firing now? 

CRO That is negative. 

SC VJe do have a continual firing whenever Buzz 

moves around in the 

CRO Okay, we're showing intermittent 3 and k. 

SC That is right, 3 and h keep (garbled) 



GEMINI 12 MISSION COMMENTARY, NOVEMBER Ik, 1966, 9:13 am CST 

TAPE 219, 
PAGE 2 



B2VELL When he does the exercise it is really going 

to open up. 
SC Is k firing? 

SC (garbled) 

CRO Well the .solenoid is opening, I don't think it 

is doing much firing. 
CRO Okay, 12, anytime you are ready, we are ready 

for Buzz's exercise. 
LOVELL Okay. 

ALDRIN One more picture of Orion. 

ALDRIN Want to hold the camera? 

■LOVELL Yea. 

AEDRIN Don't touch the (garbled) 

SC (garbled) 
AIDRIN Okay, I got it. 

LOVELL Must have been a circuit breaker Buzz. 

LOVELL Firing it again 

A2DRIN When you are ready. 

LOVELL Okay, I will give you a MARK and you can start 

whenever you are ready Buzz. Are you all set. 

ALDRIN Right. 

LOVELL MARK 

You aught to get a look at both thrusters Buzz. 

ALDRIN Ready to go. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lb, 1966, 9:13 am CST 

TAPE 219, 
PAGE 3 



CRO 

HOU 

SC 

HOU 

CRO 



CRO 

AliDRIN 



CRO 



ALDRIN 
LOVELL 



Exercise 

Flight, Carnarvon 
Go 

Standby, MARK 
Go ahead 

Roger, shouldn't he be on the B pump. 
Showing on A on both (garbled) 
Standby. 

It is okay we are satisfied with that. 
Okay. 

Can't really get my arms down to far, the 

motion that I am going through is Comfortable. 

but I do have to squeeze my legs a little 

bit to keep from goihg up. 

Would you see how many pictures are left in 

there now? 

Check. 

Have you already turned on the flashlight? 

I just turned it off in here. 

(Long pause) There is about 28 or 30 in here 

yet. Here is the camera iagain . Okay, you've 

gone your two minutes, let's see, can you 

get anymore of Gamma Velorum? 

(garbled) 

I think it's in better position now. 

As a matter of fact I think it is up a bit 



ahead isn't it? 



GEMINI 12 MISSION COMMENTARY , NOVEMBER lh , 1966, 9:13 am CST 

TAPE 219, 
PAGE U 



LOVELL No wait a second, 

AIDRIN No it's 

LOVELL Yea, I'm looking at Schedar. 

ALDRIN The one in the. middle is Jupiter 

LOVELL Yea "Jupiter, that is what I was looking at, 

thinking it was Sirius. 

ALDRIN (garbled) 

HOG Carnarvon from Flight, Agena LOS main. 

CRO Roger 

CRO 12, Carnarvon. One minute to LOS and standing 
by. 

SC Okay, exercise is complete. 

CRO Roger, thank you. 

CRO Carnarvon has Agena LOS 

SC Exhibit this, one handed now. 

CRO Roger 

SC (garbled) burn 



Let's see, sunrise at 1+7, we're 35 now. 
66:^7 and it's 66:35- About 12 minutes, 
lou want to start shooting them before sun- 
rise you know. 

ALDRIN They want to catch it as it's coming up (garbled) 

CRO Carnarvon has LOS Gemini. All systems 

GO at LOS. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lk, 1966, 9:13 am CST 

TAPE 219, 
PAGE 5 

Gemini Control Houston, 66 hours 36 minutes now into the 
flight of Gemini 12. We picked up the Gemini 12 crew 
over Carnarvon while Buzz Aldrin was performing his 
exercises. This is where he moves his arms up toward 
the helmet. It was indicated by their conversation that 
they had already shot photographs of the - of Orion this 
is with the - utilizing UV S-13 camera. The conversation 
at the tag end of dur pass over Carnarvon indicated that 
they were looking forward to a sunrise time. They plan 
to take pictures of the sunrise with the S-13 camera. 
The heart rates during this pass on Buzz Aldrin read this 
way, during his photographic time heart rates ranged from a 
low of 82 up to 90. Respiration 16 to 18. During his 
exercise period, we had a peak of 105, which was considered 
quite normal. Respiration rate of 16. The total duration 
of this standup EVA is much like the real-time option which 
was exercised, we expect the hatch to be opened approximately 
1 hour but we will have some latitude as far as duration. 
So at 66 hours 38 minutes and out of range with Carnarvon now, 
the next station to acquire will be Canton, this is at 66:^9:28 
we pass close to the outer edge of the ring of acquisition, 
but we will standby for any conversation over Canton. This is 
Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 9:36 a.m. CST Tape 220 

Page 1 



Gemini Control Houston, 66 hours, U9 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is now approaching 
acquisition with Canton. This will be a short pass on the outer 
ring of the Canton tracking station, some three minutes — two to 
three minutes on this pass and we're standing by for any conver- 
sation which might occur. 

Gemini Control Houston. We're still standing by. There has 
been no conversation during this pass. We've only got 30 seconds 
to go before we loose acquisition with Canton; however, all 
appears to be going well in the mission at this time. This is 
Gemini Control Houston. 

This is Gemini Control Houston. 66 hours, 52 minutes into 
the mission now. We're out of range with Canton at this time. 
Because of the short duration of the pass and the fact that we . 
just tipped the outer ring of acquisition, Cap Com Bill Anders 
chose not to try to contact the crew during this pass. Our next 
station to acquire is Guaymas, this is at 6? hours, 6 minutes, 
17 seconds into the flight of Gemini 12. We have a nominal flight 
plan displayed here now which indicates that close hatch and repress 
time would be at 67 hours even. However, there is some flexibility 
that can be exercised on the part of the crew in this regard. So 
at 66 hours, 53 minutes, kk seconds, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/iy66, 9:53 A. M. CST 

Tape 221, Page 1 



Gemini Control Houston, 67 hours, six minutes into the 
mission now. We're just coming up on Guaymas at the tail end 
of our h2nd revolution. Cap Com Bill Anders is trying to reach 
the Gemini 12 crew now. 



HOU 

s/c 

HOU 

s/c 



HOU 

s/c 



HOU 
TEX 

s/c 



s/c 

HOU 
S/C 



ALDRIN 
LOVELL 



Roger, you got the cabin repressed? 
Roger, 3 psi now. . . 
Roger, understand 3 psi. 

We've got a little leg room here for a change. 
Yeah. 

Now we're known as the litterbugs, right? 

Oh my, now we'll see what's next on the docket. 

Keep space clean. 

.... going to have a fit trying to stack all 
these little bits and pieces. 

Okay, we're four and a half 

Texas go remote, Guaymas local. 
Texas remote. 

Okay, cabin repress is going fine, up to 5 psi. 
Okay, radiator's going to flow. Secondary cool- 
ant valve circuit breaker closed. 
Did we report that 

Oh yeah, we have the A pumps on, that's right. 
Houston, 12. 

Go ahead, 12, Houston here. 

Let's see, that was pretty expensive in the area 
of the way of fuel. It was about 25 to 30 percent. 



GEMINI 12 MISSION COMMENTARY, ll/±h/66, 9:53 A. M. CST 

Tape 221, Page 2 



HOU Copy. When you get relatively squared away 

we've got some stuff for you. Give us a ca l l . 

S/C Okay. 

Are you pretty well squared away? 
garble 

HOU Gemini 12, Houston Cap Com, suggest you go off 

VOX. 

S/C Roger. 

HOU Gemini 12, Houston. TM shows thruster k on 

continuously. Will you confirm that thruster k 
circuit breaker is off. 

S/C Yes, it's off. During EVA, I turned it off. We 

had quite a bit of . . . and we wanted to see if 
there was fuel . . . firing from thruster k to see 
if we'd turn it off it would stop firing. Putting 
it back on. 

HOU Roger. 

S/C Houston, 12. Did you want to give us some flight 

plan updates? 

HOU Roger, 12. If you got time, we'd like you to 

start a normal purge, section 1 and then 2. 

s/C Roger, starting normal purge, section 1 and then 2. 

HOU Roger and when you get squared away we'd like to 

have you start a D-10 Mode Alpha, followed by a 
Mode Echo. 



ION COMMENTARY, ll/lU/66, 9:53 A. M. CST 

Tape 221, Page 3 



Roger. After EVA is squared away, D-10 Mode 

Alpha then Echo. Any particular time for that? 

No particular time- At your convenience. You 

can also go ahead and eat. We'll give you a 

flight plan update next time around on the ETR, 

over the U. S. at 68:39- 

Roger, next flight plan update 68:39. 

Roger, and if you want to get your next station 

time up to date you can add five minutes to what 

you have on the flight plan. 

Roger . 

I have a node update, if you'd like - have time to 

copy that. 

Okay. 

Time 68:30:11, node rev k3, 155-9 west, right 
Ascension, 10 hours, 26 minutes. 
Roger . 

Okay, is there anything you would like to add to 
the jettison list. 
Stand by one. 

We threw away the S-13 bracket, and there is 
a possibility we threw away both cables to the 

left-hand EV camera. We kept the gold visor, the 
EV visor. 

You kept the EVA visor? 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 9:53 A. M. CST 

Tape 221, Page h 



S/C Right. 

HOU And everything else went out the door? 

S/C Roger. 

HOU Roger, we have the rest of these PLA updates 

whenever you're in the mood to copy them, but 
they're not critical. 

S/c I'll copy them now. We wrapped everything up. 

HOU Roger, starting with U6 dash U Alpha, 72:50:31. • 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10V03 a.m. CST Tape 222 

Page 1 



HOU ...h Alpha. 72 50 31, 20 + 1+7, 26 + 31, roll 

left 85, roll right 95- - k Alpha, 7*+ 26 07, 
20 + 1+1, 26 + 17, 1+8 - k Bravo, 76 01 1+8, 20 + 18, 
25 + 56, Bank, angles are all the same, weather is 
all good. 

S/C Roger. 

HOU And we'd like to have Buzz press on the sternal 

EKG sensor if he has a chance. 
S/C Roger. Which one is that? 

HOU That's the one on your breastbone. 

S/C Okay. 

HOU It's right in the middle of your sternal. 

S/C Houston, illegible. 

Is that going to be it? 

HOU I'll have to wait a second. Roger, thanks a lot, 

that helped and be advised you're about 120 miles 
from the Agena and holding your own. 

S/C Roger. 

HOU Gemini 12, Houston. How is your purge going? 

Mighty fine. 

Gemini 12, Houston, over. 
S/C Roger. 

HOU Roger, just as a matter of info, we'll be 

planning various modes of D-10 later on in 
the day, which you can just give a try; if you 
have any trouble with it, we'll just have you 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:03 a.m. CST Tape 222 

Page 2 

go — pass on to the next one. We'll also 
be trying S-ll and S-29 and some T-2. We'll 
give you detailed update next time around. 

S/C Roger, Houston. Just keep in mind all these 

require a plane stance, can be done if you 
take your time, otherwise you just do the job 
or you use a lot of gas doing it. 

HOU Roger, we are considering that and we'll give 

you a long time for each mode and you'll just 
have to do the best you can. 

.„„. LOS on Gemini, .... 

HOU Gemini 12, Houston. 

S/c Go ahead. 

HOU Roger. Just as a reminder, when you're doing 

D-10, mode echo, we don't want you to fire 
your up-down or right-left thrusters . 

S/C Roger. 

GTI LOS Turk. 

S/C Purge complete. 

HOU Copy. 

Gemini 12, Houston Cap Com. One minute to LOS. 
Canarys in three minutes. 



Gemini Control Houston, 67 hours, 2k minutes now into the 
flight of Gemini 12. We have concluded our third EVA of this 



GEMINI 12 MISSION COMMENTARY, ll/lV66, 10:03 a.m. CST Tape 222 

Page 3 



mission, the second standup EVA programmed for Gemini 12. The 
Gemini 12 crew, Jim Lovell and Buzz Aldrin, had closed their 
hatch prior to acquisition at Guaymas. The exact time, or duration 
of this EVA has not yet been refined; however, to recap quickly, 
we — the Gemini 12 spacecraft had its hatch opened after Kano, 
and before Carnarvon. We picked up Buzz Aldrin during his 
exercise period over Carnarvon, and the hatch was closed some- 
time prior to acquisition at Guaymas. The Gemini 12 crew has 
just been updated by Cap Com Bill Anders. During this next 
revolution, they will perform the D-ll experiment. This is 
the ion sensing attitude control experiment. The crew will 
then, at their leisure, eat. They expect a second flight plan 
update at 68 hours, 39 minutes, a flight plan update over the 
Eastern Test Range. The crew appears in very good spirits as 
they have extended their already existing EVA record, and at 
67 hours, 26 minutes, we are standing by now — standing by for 
acquisition momentarily at Canary. This is Gemini Control Houston. 

CYI Canary has TM solid on the Agena. Agena is 

go. 

HOU Roger, Canary. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:13 a.m. CST Tape 223 

Page 1 



C Yi And we have TM solid on the Gemini. And it 

is also go. Cabin pressure is still down, 
about k.6. 

H QU What are you reading on cabin pressure, Canary? 

CYI ^.6 off the meter. 

HOU Okay. 

CYJ Gemini 12, Canary Cap Com. We will send you a 

TX at this time. 
S/C Roger. 

CYI Houston Flight, Canary Cap Com. 

HOU Go ahead. 

CYI Okay, the inverter temperature on the Agena is 

Charlie, Oscar 21, is reading 132 degrees. 

HOU Roger, 132. 

And that's what it was over the States. 

CYI Okay. 

HOU And that's why we turned the ACS off, Bill. 

CYI Okay. 

The cabin pressure is k.6Q now. 
HOU Okay, EECOM advises that with the repress off 

it's going to take a couple of hours to build 

that up. 
CYI Okay. 
HOU No sweat. 

CYI Roger . 

Flight, Canarys. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:13 a.m. CST Tape 223 

Page 2 



HOU Go ahead. 

CYI Okay, we're reading 768 on the 0 2 tank pressure. 

Do you want to bump that up a little bit or.. 
HOU Seven what? 

CYI 768. 
HOU No that's okay. 

CYI Houston Flight, Canary Cap Com. 

HOU Go ahead. 

CYI Okay, on the Agena S-band temperature H0/U9 has 

gone up 2 degrees since it left the States. It's 
reading ikk now. 

HOU Okay, lhk. 

Canarys, Flight. 

CYI Go ahead, Flight. 

HOU We're not worried about that S-band temp at this 

time. We'll continue to watch it though. 
CYI Okay. 
HOU Canarys, Flight. 

CYI Go ahead. 

HOU Ask Jim if he has deployed the D-10 sensors yet. 

CYI Roger. Gemini 12, Canary Cap Com. 

S/C Go ahead, Canarys. 

CYI Have you deployed the D-10 sensors yet? 

S/c Just a second and we'll let you know. We're 

still doing the EVA post-stowage and you'll 

have to wait for it. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:13 a.m. CST Tape 223 

Page 3 



HOU No, no, no hurry, okay. 

CYI Stand, by, stand, by on that, 12. 

HOU No hurry, that's okay. We just wanted to know. 

CYI There's no hurry on it. Do it at your convenience. 

They just wanted to know back in Houston. 
S/C Roger. 

CYI And we have about a minute to LOS, here. We'll 

stand by. 
HOU Kano, go remote. 

CYI Canarys local. 

KNO Kano is remote and we have acquisition. 

HOU Gemini 12, Houston Cap Com through Kano. 

S/C Roger, Houston. 

it 

HOU Roger, on the D-10 deploy/ and activate mode 

Echo on your convenience. 
S/C Roger. 

HOU Gemini 12, if you are calling Houston, we're 

not reading you. 
S/C Houston, 12 here. We are not calling. 

HOU Roger, read you five by„ You copy that comment 

on D-10? 

S/C You said there was no hurry to deploy D-10, is 

that correct? 

HOU Deploy D-10, mode Alpha and mode Echo at your 

convenience. 
S/C Roger, will do. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:13 a.m. CST Tape 223 

Page k 



S/C Houston, 12 here. 

HOU Go ahead, 12. 

S/c We'd like for you to confirm that the number 12 

forward firing thrusters will not effect the D-10. 

I haven't used it yet, but we probably will be 

using them for yaw control. 
HOU That is affirmative. The forward and aft firing 

thrusters will not effect D-10. 
S/C Roger . 

HOU Gemini 12, Houston, how did the EVA photography 

go? 

S/C Well, it was a little bit difficult to get the 

shots of the sunrise. They were kind of back 
angle shots around the hatch underneath the 
hatch-closing device. So we ended up taking all 
frames of the UV film and I think we out to get 
some fairly good pictures out of it. 

HOU Sounds real good. Nice going. 

S/C (garbled) 

HOU Say again, 12. 

S/c Do you think you could see Orion in the daytime? 

HOU Oh we think we might on UV film, if the camera 

didn't see any of the spacecraft. 

S/C Well, it was kind of hard after sunset, but after 

sunrise, the sun was shining on the back of the 
adapter and I think I might have been able to 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:1 3 CST Ta P e 223 

Page 5 



get the Gamma Velorum area, but the Orion area 
I'm pretty sure was getting some... 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/ll+/66, 10:21+ A. M. CST 

Tape 22U, Page 1 



S/C I think I might have been able to get the 

gamma Velorum area but the Orion area, I'm 
pretty sure was getting some scattering from 
the spacecraft. 

HOU Roger. Anywhere up there would be great. 

HOU Gemini 12, Houston Cap Com, over. 

S/C Go ahead. 

HOU Roger, if you don't object we'd like to have 

you go to the primary scanners for the rest of 
the day and back to secondary tomorrow. 

S/C Very well, we're on primary. 

HOU Mighty fine. 

S/C What we're trying to do is the horizon scanners 

in orb rate of the platform to see what it does. 
HOU Roger. 

(PAUSE) 

Gemini Control Houston. We're in the final stages of our pass 
over Kano. There's one minute to Loss of Signal at Kano. We're 
standing by for any further conversation which might take place. 
This is Gemini Control. 

HOU Gemini 12, Houston Cap Com, one minute to LOS. 

Five minutes to Tananarive. 
KNO Kano has LOS. 

Gemini Control Houston. We've just had loss of signal over 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:24 A. M. CST 

Tape 224, Page 2 



station. Tananarive will acquire at 67:47 into the flight of 
Gemini 12. At the present time the Gemini 12 spacecraft with 
its crew of Jim Lovell and Buzz Aldrin is in its 43rd revolution. 
The apogee on the spacecraft is now 157.9 nautical miles and the 
perigee reads 142.8 nautical miles. This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER Ik, 1966, 10: 3^ am CST 

TAPE 225, 
PAGE 1 

Gemini Control Houston, 67 hours 1*7 minutes now. We've just 
acquired Gemini 12 at Tananarive and we're standing "by for 
conversation with the crew. 

HOU Gemini 12, Houston standing by at Tananarive. 

SC Roger we have completed mode A, we are in the 

process of mode B. 
HOU Roger. 

Gemini Control Houston, very little conversation during this 
pass over Tananarive. Here in Mission Control, Astronaut 
GOfd&tt Cooper has come in to perhaps spell Bill Anders for 
awhile in the Capsule Communicator duties. He is at the 
console now and is chatting with Anders. 
HOU Gemini 12, Houston Cap Com. One minute to 

Tananarive LOS, 9 minutes to Carnarvon. 

Gemini Control Houston, 67 hours 55 minutes now. We've had 
loss of signal with Tananarive. The next station to acquire 
will be Carnarvon. Our pass over Carnarvon is scheduled for 
68 hours ,2 minutes, 1 second into the flight of Gemini 12. 
As we start over the hill on our 43rd revolution this is 
Gemini Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 10:48 A. M. CST 

Tape 226, Page 1 



Gemini Control Houston, 68 hours, two minutes now into the 
flight of Gemini 12. Jim Lovell and Buzz Aldrin are approaching 
acquisition at Carnarvon tracking. We expect little or no con- 
versation during this pass, by the way. Carnarvon advises that 
they are standing by. 
CRO Flight, Carnarvon 

HOU Go ahead. 

CRO I'm showing both A pumps on in loops, both 

A pumps and B pumps. 
HOU Say again. 

CRO I say we're showing the A P^P 8 on in both 

loops. Stand by. Go ahead, 12. 

S/C Check of our thrust ers indicate no. 8 thruster is 

also out. I guess the last plat mode operation 

was too much for it. We can still see the thing 



firing but trying to operate it we found out we 
get no response from no. 8 at all. 

HOU Okay, that's thruster no. 8, is that right? 

S/C Roger, OAMS thruster no. 8. 

HOU Okay, copy that. 

CRO Flight, Carnarvon. 

HOU Go ahead. 

CRO Does he need his computer for this D-10? 

HOU Yeah, I think he does need it for the first 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:h& A. M. CST 

Tape 226, Page 2 



part. 

CRO Okay, it's showing off right now. 

Did you get that comment on the A pumps 

being on also? 
HOU Yes . 

CRO Okay. 

HOU That's because they're powered up, Jim. 

Leave it that way. 
HOU The computer's off and that's appropriate, 

Carnarvon. 
CRO ■ Say again, Flight. 

HOU The computer being off is appropriate for 

this mode. 

CRO Okay.- We're showing quite a bit of activity 

on pitch up and yaw left. 
HOU On the spacecraft? 
CRO Roger. 
HOU Yeah, working. 

CRO He just opened up his maneuver thruster circuit 

breaker. 

HOU Maneuver thruster did you say? 

CRO Rog. 

HOU All of them or one of them? 

CRO All of them. 

HOU He's probably troubleshooting and trying to find 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 10:48 A. M. CST 

Tape 226, Page 3 



something that works. 
CRO Rog. 

CRO Okay, he just opened up 5 and 6, 1 and 2, 3 and 

k. Attitude is now 80 - closing back up. 
HOU Okay. 

CRO And he's really firing 5, 6, 1 and 2. Pitch up 

and pitch down. 
HOU Rog. 
S/C Carnarvon, Gemini 12. 

CRO Go ahead. 

S/C Roger. It seems like right now we go unstable 

in plat control mode. 
CRO Roger. He's in pulse right now, Flight. 

HOU He's in pulse? 

CRO Right' now he's in pulse, right. He says he's 

unstable in platform mode. 
HOU Yeah. That's cause he doesn't have any yaw 

going for him except one thruster. 
CRO Yep. 

CRO And we've had LOS Gemini and Agena. 

HOU Roger Carnarvon. 



This is Mission Control Houston. We have had loss of signal 
at the Carnarvon, Australia tracking station. The next event at 
the Press Center is the Change of Shift Briefing from the green 



GEMINI 12 MISSION COMMENTARY, 11/11+/66, 10:48 A. M. CST 

Tape 226, Page h 



team. The participants will be Dr. Charles A. Berry; Mr. William 
Schneider who is Mission Director for Gemini 12; Jerry Griffith, 
the Guidance Navigation and Control Engineer for the green team; 
and green team Flight Director Clifford Charlesworth. This Press 
Conference should get underway in a few minutes. At 68 hours, 
11 minutes and 33 seconds after liftoff this is Mission Control, 
Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER I966, ^.qQ ^ CST 

TAPE 227, 
PAGE 1 



This is Mission Control Houston, coming up over the Canton 
Island Voice Remoting Station. We've Just had acquisition 
at Canton Island. We will standby for any conversation be- 
tween Spacecraft communicator here in Mission Control and 
the crew of Gemini 12. Let's listen in. 
HOU Gemini 12, Houston Cap Com, through Canton 

and standing by. 
SC Roger, Houston. Did ycu get the word from 

Carnarvon on some addresses? 
HOU Roger, we were, monitoring your Carnarvon pass 

and we'd like to make sure you got your roll 

jets in pitch. 
SC Roger . 

HOU Would you confirm that your OAMS heater circuit 

breaker is on? 

SC Roger, OAMS heater circuit breaker is on. 

SC We are now duitifully performing mode F of the 

D-10. 

HOU Roger, we might be doing some more of that if 

this keeps up. 
SC (garbled) 

HOU Seems like you've been in thi* situation before, 

Jim. 

SC We had little problem with two delta P lights 

up here. 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 14, I966, 11:08 am CStf 

TAPE 227, 
PAGE 2 



-S/C H€U- Roger, just like being back home again. 

/Vcv Gemini 12, Houston. We're still thinking of 

having you try the other mode on D-10 to see 
how you can - how it will work out, but if 
you can't hack it why you can always give foxtrot a try. 
SC Well we attempted to (garbled) SEF but we 

weren't ito the right mode (garbled) and 
couldn't even do it without (garbled) we 
got the rates down but the plat wouldn't 
hold it. 
SC (garbled) 

HOU 12, Houston. You're fading in and out. 

We'll dump you more over the states. Be advised 
that if you are still drifting you might to 
get some pictures over Mexico and Florida., the 
weather is pretty good. 

SC Roger. 

HOU Gemini' 12, Houston Cap Com. About one minute 

to Canton LOS. See you at Guaymas in 11 minutes. 
SC Roger . 

This is Mission Control Houston at 68 hours 30 minutes and 39 
seconds after liftoff. We have had loss of signal at the 
Canton voice remoting station. Coming up on Guaymas in approxi- 
mately 10 minutes. This is Mission Control Houston. Now to 
the Press Conference. 
~ J * Te * END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER ik, 1966, 12:00 CST 

TATE 228, 
PAGE 1 



This is Mission Control Houston at 69 hours 12 minutes and 
35 seconds after liftoff. Gemini 12 at the present time is 
over the Kano, Nigeria voice removing station. During the 
just completed stateside pass the crew was given flight 
plan updates for the days activities. Up through the sleep 
period. Included several runs of experiments, they were 
given a GO for landing area 60-1 which is the normal end 
of mission landing. They also reported, the crew reported, 
that number 8 thruster was out . They were now in drifting 
flight. We have an accumulation of tape of the air to 
ground transmissions which we will play back now. They will 
include the stateside pass, the Canary Islands pass, and 
the Kano, Nigeria pass presently under way. At the comple- 
tion of that we will pick up whatever transmissions are made 
during the Tananarive voice remoting station pass. Let's 
roll the tape now. 



CAL California has acquisition . 

FD California go remote. 

CAL California is remoting. 

HOU Gemini 12, Houston. Over. 

FD Guaymas go remote, California local 

GYM Remote 

HOU Gemini 12, Houston Cap Com,. over. 

SC Roger, Houston. 

HOU Roger 12. Our calculations here on the ground 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 1^, 1966, 12:00 CST 

TAPE 228, 
PAGE 2 



indicate that you're probably approaching an 
empty adapter water tank here shortly. You'll 
be able to tell this because the water pressure 
will drop from about 20 psi which you've been 
having to almost nothing. You'll have to 
use a squeeze bulb to get water out of the 
spacecraft tank. You have about 13 pounds in 
the spacecraft tank. When you notice this 
drop in water pressure, we'd like for you to 
get a gun count. Over. 

SC Thanks a lot. Okay, we'll give you a gun count. 

HOU Okay, you faded on us on your description of 

the control situation over Canton, could you 
give us a run down? 

SC Roger. Number 8 thruster appears to be out. 

We can hear the solenoids firing but it doesn't 
do anything. Very similar to a situation that 
we had back on 7. We tried to align the space- 
craft SEF after we realigned the Scan Mode and 
when we got back there we went back to the 
Plat Mode and it started to put vibration on 
it so we got out of it again. To save fuel, 
we just went adrift. We're drifting now. 

HOU Okay. Sort of like Gemini 5 control power. 

SC Yes, this looks like another one. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER ik, 1966, 12:00 CST 

TAPE 228, 
PAGE 3 



HOU Gemini 12, Houston. Could you give us a 

water gun count now please? 
SC Roger, our water gun is looking at 

2024. 

HOU Copy, 2024. I have a flight plan update 

for you when you are ready to copy. 
SC Ready to copy, go ahead. 

HOU Roger. We have a - several D-10 modes here 



for you. We'd like for you to try them, 
recognizing your control problem. If you 
would do the best you can, if you can't get 
it you might move on to the next mode. If 
you have - if you can't get them at all just 
go ahead and do fox trot. Okay the first one 
69 30, D-10 Mode Bravo, end it at 69 kO. 
At 69 55, D-10 Mode Bravo, end it at 70 05- 
At 70 05, start a D-10 Mode Charlie, end it 
at 70 30. 70 1*5, S-ll Mode Charlie; 71 20 
to 72 20, D-10 Mode Charlie; 71 55, purge 
fuel cells, section 2 then section 1; 72 20 
to 73 20, D-10 Mode Dog; 73 20 align platform, 
also D-10 Mode Echo, do that until 73 ^5; 
73 45 S-29; 7k 20 power down platform; 75 00 
X-ray on Beta with mag through sleep period; 
75 18, T-2 Mode Alpha, sequence 1; 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lU, 1966, 12:00 CST 

TAPE 228, 
PAGE k 



75 50 eat period; 76 06 CSQ, PLA update block 
eight, purge fuel cells, section 1 then section 
2. Give us a cryo read, leave cryo read in 
H2 for sleep period; 76 25 Hawaii, crew status 
report, H2 heater on, raise pressure to 
667 pounds, H2 heater auto; 76 30 to 8k 30, 
sleep period, also D-10 Mode Fox trot, did 
you copy? 

Did you copy Gemini? 
SC Roger, I think I got most of that. Would 

you say again at 75 l8 please? 
HOU 75 18, T-2, Tango 2, Mode Alpha, sequencs 1. 

SC Roger, and then the pressure for the H2 heater 

before going to auto. 
HOU 667 pounds. 

SC Roger, 667. 

HOU And we are ready for a 30-second 02 purge on 

both sections. 

Gemini 12, do you copy 02 purge? 
SC Negative, say again please. Didn't get any of 

that. 

HOU Roger, we'd like to have you do a 30-second 

02 purge for both sections . 
SC I understand, 30-second 02 purge both sections 

now. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER Ik, 1966 12:00 CST 

TAPE 228, 
PAGE 5 



HOU Roger and we'd like to update your TSR and 

give you a load for 16-1. Would you turn 
your computer to prelaunch? 

SC Roger, computer is prelaunch, it's on, 

standby for a diagnostic. 

HOU Make that 60-1. 

SC Okay. Looks like on the purge I get an 

indication on the FDI needles in detent. 

HOU Roger, we'll have ECOM and G & C think about 

that . 

SC It showed a yaw to the right. 

HOU Roger . 

Gemini 12, Houston. We understand that you 
are able to get 1 T-2 pass, do you have any 
data for us? 

SC Roger, standby just a minute. 

HOU Okay. 

SC I wouldn't worry about that FDI needle moving to 

much, that accounts for the fact before I put 
that one on. 

HOU Copy and you are go for 60-1. 

SC 60-1, roger. 

HOU You got a good load and we're done with the 

computer . 

SC Done with the purge? 

HOU Roger, copy, done with purge. 



GEMINI 12 MISSHS5N COMMENTARY, NOVEMBER lU, 1966 12:00 CST 

TAPE 228, 
PAGE 6 



SC (garbled) 

HOU Roger, standby we are reading you quite 

garbled . 

FD Bermuda go remote 

BBA Bermuda remote. 

HOU Gemini 12, Houston Cap Com. We are ready 

to copy your T-2 data. 
SC Roger, I will omit the times, I don't - unless 

you really want those. The zero bias, 0000... 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/2.4/66, 12:10 p.m. Tape 229, Page 1 

Aldrin Roger, I'll omit the times, unless you really 

want those. 05 00 01, I'll give you just the 
last two digets, number 2 was 02, number 3 was 
59, number k was 50, number 5 was 01. Did you 
copy? 

CAP COM Roger, we copy, thank you. 

Aldrin Roger, I've got several readings here, l8.6ll, 

I'll give you the last two digits on the 
remaining ones, number 2 was 06, number 3 was 
0k, number k was 08, number 5 was 0k, number 
6 was 0k, number 7 was 09, number 8 was 06, 
number 9, I inadvertently turned the knob, 
number 10 was 08, number 11 was 11 and for 
the last three I switched to a slightly different 
using the thumb instead of the finger to turn 
the knob, and I got 05 for all three of them. 

CAP COM Roger, we copy. 

Gemini 12, Houston. You have a good load, you 
are cleared out of prelaunch at your convenience 

Aldrin Roger . 

CAP COM Gemini 12, Houston Cap Com, over. 

Lovell Go ahead. 

CAP COM Roger, could you give us your first and last 

T2 time please? 

Aldrin Roger, the times are reference to 63 hours 

Ik minutes, k2 seconds, now wait a minute 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 12:10 p.m. Tape 229, Page 2 

Aldrin the times are reference to 63 hours, 6 minutes, 

00 seconds. First measurement was at 13 00 8.0 
and the last measurement was at 38 51 «0- 
CAP COM Roger, copy. 

Gemini 12, Houston Cap Com, one minute to LOS, 
five minutes to Canaries. 
Roger 

CYI, Flight 
Go ahead, flight. 
Standing by for your pass, Bill. 



S/C 

HOU FLT ' 

CYI 

HOU FLIGHT 
CYI 

HOU FLT 
CYI 



HOU FLT 

CYI 



S/C 
CYI 

HOU FLT 

CYI 

S/C 

CYI 

S/C 

CYI 



Ok. 

And no special requests. 

Roger. Acq aid contact on the Agena. We are 
getting TM out of Gemini now, its rather ragged 
at this time. 
Roger 

Gemini 12, Canary Cap Com. We have nothing for 

you at this time, we are standing by, sending a: 

TX at this time. 

Roger, CYI. 

Flight, Canary. 

Go ahead. 

(Garbled) 

Looks real nice down there. 
Say again, 12. 

I say it looks real nice down there. 
It is, very very nice. 



GEMINI 12 MISSION COMMENTARY, 11/1^/66, 12:10 p.m. Tape 229, Page 3 

CYI Gemini 12, Canary Cap Com. About a minute to 

LOS. We are standing by and we will see you 
tomorrow. 

Lovell Roger, Canary. 

CYI We've had LOS on the Agena. And we've had 

LOS on the Gemini. 
HOU FLT Roger, Canaries. 

CYI And we'll see you tomorrow. 

HOU FLT Ah that's right. Time off, huh? 

CYI That's affirmative. 

HOU FLT Have a good night, Bill. 

CYI Roger will do. It's starting to get dusk over 

here . 

HOU FLT That sounds like a good time to get off. 

CYI You're right. It's almost like bankers hours 

this mission. 
HOU FLT Sure, you and Carnarvon. 

CYI I don't think Jim appreciates that. 

HOU FLT OK, we'll see you tomorrow. 

CAP COM Gemini 12, Houston Cap Com through Kano, and 

standing by. 

Lovell Roger, Houston. Mode C....I don't think... 

we have any capability of a compass. 
CAP COM Roger. 



CAP COM 
Lovell 
CAP COM 



Lovell 
CAP COM 



Lovell 
CAP COM 

HOU 
TAN 

CAP COM 



MISSION COMMENTARY, ll/lty66, 12:10, p.m. Tape 229, Page k 
Gemini 12, Houston Cap Com, over. 
Go ahead, Houston. 

Ok, Jim. If you can't do mode C, try to stay 
generally SEF heads up. 

Roger, we just got it out of that position now, 
we were very fortunate. .just. .to stop it. We 
can maintain this position somewhat but if we 
try to do any particular maneuvers, we just yaw 
all 

Roger, we copy. 

Gemini 12, Houston Cap Com, over. 
Roger, Houston. 

On the S-ll, if you don't think you'll be able 
to swing around to the horizon, just take about 
12 pictures of whatever horizon you can get. 
Roger, understand. 

Gemini 12, Houston Cap Com, one minutes to Kano 
LOS, five minutes to Tananarive. 
Tananarive, go remote. 
Tananarive , remote . 

Gemini 12, Houston Cap Com through Tananarive, 
over . 

Gemini 12, Houston Cap Com through Tananarive, 
over. 

Gemini 12, Houston Cap Com, through Tananarive, 



END OF TAP 



GEMINI 12 MISSION COMMENTARY, NOVEMBER ik, 1966, 12:20 pm CST 

TAPE 230, 
PAGE 1 



HOU Gemini 12, Houston Cap Com through Tananarive, 

over. 

Gemini 12, Houston Cap Com through Tananarive, 
over. 

SC Roger, Gemini 12. Go . 

HOU 12, this is Houston Cap Com reading you some- 

what garbled. Be advised we have talked to the 
D-10 experimenter. He feels that if you can 
hold attitudes within plus or minus 20 degrees, 
20 degrees, at the various mode data, would be 
acceptable. If not, go to Mode F, Mode Foxtrot 
and do S-5, S-6, and S-29 as targets of oppor- 
tunity . Over . 

SC I understand that if we can do D-10 right now 

after attitudes of 20 degrees it would be 
acceptable, (garbled) S-6, S-5 and S-29 
as targets of opportunity. Is that correct? 

HOU Roger, that is S-5, S-6 and S-29 and D-10 

Mode Foxtrot. 

SC Roger * We don't (garbled) pulse mode B, I'll 

let you know how we come out. 

HOU Roger. We'd also add S-ll as target of oppor- 

tunity also. 

SC S-ll. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lU, 1966, 12:20 pm CST 

TAPE 230, 
PAGE 2 



HOU Whatever you can get, we'll take it. 

One minute to Tananarive LOS. 

Nine minutes to Carnarvon. 
SC Say again. 

HOU One minute to LOS and nine minutes to Carnarvon. 

SC Roger . 

TAN Tananarive LOS. 



This is Mission Control Houston at 69 hours 35 minutes and 
22 seconds after liftoff. Spacecraft Gemini 12 is within 
about 2 minutes of acquisition by the Carnarvon, Australia 
tracking station. We'll come back up with that pass, the 
pass duration will be 8 minutes and ko seconds over Carnarvon. 
To briefly summarize the stateside pass the crew of Gemini 12 
were given a GO for landing area 60-1, the flight plan up- 
date for the entire day up through the sleep period. The sleep 
period is scheduled to begin at 76 hours 30 minutes and run 
through 8U hours 30 minutes ground elapsed time. During the 
sleep period the D-10 experiment will be turned on in random 
mode, random data and drifting flight. Also, they were given 
several runs of the D-10 in other modes for yaw and roll 
attitude measurements of this Ion-Sensing Attitude Control 
Experiment. One run - one sequence of the T-2 sextant space 
sextant experiment was passed up to the crew. This is 
scheduled to take place at 75 hours 18 minutes ground elapsed 



GEMINI 12 MISSION COMMENTARY, NOVEMBER ik, 19^6, 12:20 pm CST 

TAPE 230, 
PAGE 3 



time and it will be a measurement of "between the stars Betelgeuse 
and Rigel. Carnarvon now has acq aid contact and telemetry 
contact with Gemini 12. Both systems are go on the ground. We 
are awaiting for spacecraft communicator at Carnarvon to put 
in a call to the spacecraft. Carnarvon is standing by, let's 



listen. 

CRO Gemini 12, Carnarvon standing by. 

SC Roger, Carnarvon. We are still doing D-10 

Mode B, with irgspett* to our control system, 
I think that the experiment is coming along 
quite well and it gave the proper response 
on the pilot side. 

CRO Okay. 

CRO C and S-Band track at Carnarvon. 

HOU How is the S-band temperature. 

CRO Standby. 

ihk degrees. 
HOU Ikk roger. 

HOU Carnarvon is the computer on? 

CRO That is affirmative. 

HOU Would you send us a couple of OBC's? 

CRO Roger, we have. 

HOU Really makes him happy. 

CRO I can imagine. 



GEMINI 12 MISSICN COMMENTARY, NOVEMBER lU, I966, 12:20 pm CST 

TAPE 230, 
PAGE h 

Rather a quiet pass over Carnarvon. We still got 3 minutes 
and 57 seconds remaining in the Carnarvon pass. We'll con- 
tinue to standby for any air to ground conversation that 
might transpire. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lk/66, 12:30 p.m. Tape 231, Pg 1 

HOU FLT Carnarvon from flight. 

CRN Go ahead. 

HOU FLT LOS OBC, please. 

CRN Roger. 

Gemini 12, Carnarvon. One minute to LOS, 18 
minutes to Hawaii. 
Lovell Roger, that sounds good. 

CRN Los Agena. 

HOU FLT Roger, Carnarvon. 

CRN Los Gemini. All systems LOS. 

And this is Mission Control Houston. We have had loss of 
signal at the Carnarvon, Australia tracking station. The Spacecraft 
will be coming over the Canton Island voice remotlng station and 
subsequently the Hawaiian Station within about 8 minutes. We'll 
come up again at that time with any conversation that happens 
during these two passes. At 69 hours, 46 minutes and 33 seconds 
after liftoff, this is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 12:1+4 pm CST Tape 232 

Page 1 



This is Mission Control Houston, let's join the conversation in 
progress between spacecraft Gemini XII and the Mission Control 
Center through the Canton Island voice remoting station. 
This is Mission Control, it's rather quiet right now, but earlier 
in this pass when contact was first established, spacecraft communi- 
cator Pete Conrad advised the crew that picture taking opportunities 
during the upcoming stateside pass were quite good. And then he 
advised them that he was standing by. There may not be any fur- 
ther conversation during the Canton Island pass. We'll stand by... 
the Canton Island pass blends in to the pass over Hawaii and we have 
approximately 13 minutes remaining over both of these stations and 
then it bridges across over in to the stateside pass. We'll continue 
to stand by 

This is Mission Control again. According to today's flight plan, the 
crew should be in the midst of two runs of the D10 experiment, Ion 
Sensing Attitude Control. Both of these runs scheduled, well the 
first one will be in the roll attitude mode, the second in the 
pitch attitude mode. We have about 5 minutes left, actually about 
30 minutes left in the pitch attitude mode. Approximately U5 min- 
utes they will do a run of the Sll airglow horizon photography as 
they approach their sunset. We'll continue to standby for any air 
to ground conversation over Canton Island and Hawaii. 

Canton go local 
HAW Hawaii has TM both vehicles 

HOU Roger, Hawaii. Should be quiet pass in the middle 

of that D10. Standing by. 



GEMINI XII MISSION COMMENTARY ll-lU-66 12-M pm CST Tape 232 



Page 2 

HAW Gemini 12 Hawaii Cap Com standing by. 

S/C Roger, Hawaii. We have just completed the D10 mode 

D. 

HAW Roger. 
HOU We copy. 

HAW .... showing computer on mode 1 . Remains on . 

HOU Roger. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 12 :5k pm CST Tape 233 

Page 1 



HAW Gemini XII Hawaii, we'll have LOS in one minute. 

S/C Roger. 

HOU HAWAII leave the C-band beacon on please. 

HAW That's a little tough to do, I'll wait until TX 

clocks out and then I'll turn it back on at 
over the hill. 

HOU Okay. 

HAW He's had LOS with 3 transmitts C-band beacon on 

He thinks it should be on. 
HOU Fine thank you. 



And this is Mission Control Houston, at 70 hours 11 minutes and 
22 seconds after liftoff. We have had loss of signal at the Hawaii 
tracking station. We have just a few moments gap here between 
Hawaii and the first station on the stateside pass, the California 
station. Two minutes away from acquisition at California, as 
Pete Conrad mentioned during the Canton Island pass, the weather 
today over the states is in real fine shape for picture taking. 
Also there is planned a voice relay exercise using an aircraft 
during the pass over the Texas station. We'll stand by for con- 
versation during the picture taking and try to determine which areas 
of the states crew is taking pictures of. Less than one minute now 
to California acquisition. Conrad is calling Gemini 12 now. 
HOU Houston standing by California. 

S/C Roger, we've completed D10 mode d, before we go on 

we're pitching down now slowly to get in position 



GEMINI XII MISSION COMMENTARY ll-lU-66 12:5^ pm CST Tape 233 

Page 2 

for some S5 and S6 photos of the states. 

HOU Roger. And during your Texas pass, we'd like to 

work some remote through one of the Ryan aircraft 
and so I'll give you a little chatter there and if 
you talk back over Texas we'll appreciate it. 

S/C Okay fine. 

( Acquisition of telemetry Gemini ) 

HOU On your next pass across the states we got a little 

HF music for you to lighten the load. 

S/C You're so sweet there Petey. 

HOU I always take care of my pals. 

HOU Guaymas go remote California go local 

CAL Calif or 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lU, I966, l:Oh pm CST 

TAPE 23^, 
PAGE 1 

HOU Gemini 12, Houston. We're coming up to 

the Texas pass, how does the weather look? 
SC (garbled) 
HOU Say again. 

SC Just passed (garbled) 

HOU Very good, and when you have a chance would 

you give us a - after you've got the time 
passing the states - a 30-second 02 purge 
please . 

SC Roger . 

HOU Would you switch the quantity switch to 02 

flight please? 

HOU Gemini 12, Houston. How do you read me now? 

SC Loud and clear. We're coming up right over 

Houston. 

HOU Roger, you are transmitting to us through 

the aircraft, could you give us a little 
description? 

SC Roger. For one thing, half of those kids 

of yours are up on the roof again. 

HOU They can't be, they are suppose to be in 

school. 

If that's the case they are playing hooky 
besides being on the roof. 
SC BeautifuJ. sight of Houston, just right over 

it. Very clear today. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER Ik , 1966, l:OUpm CST 

TAPE 23^, 
PAGE 2 



HOU Got you. 

Can you see the Dome? 
SC Roger . 

HOU Very good. 

12, Houston. Are you calling? 
SC Negative . 

HOU 12, Houston, now we are back to you through 

the Cape. 

12, Houston. 
SC Go ahead. 

HOU Roger, the sextant people passed me this 

information they took from your readings and 
your bias error "is minus 7.20 seconds and 
the standard deviation was 9. 10 seconds. 

SC Roger. Try and do better. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 1:1k PM CST, TAPE 235 

• PAGE 1 

HOU 12, Houston. Could you give us your 

30 second purge here. We would like to 

watch it. 

S/C Roger. Coming up on 30 second purge. 

HOU Thank you. And on your next pass across 

the States, don't forget to run out your 
HF adapter antenna there and we will play 
you a little tune. 

S/C Okay. 

GTI LOS GTI. 

GTI LOS Turk. 

HOU Gemini 12, Gemini 12. Houston. One 

minute until LOS Antigua. We will see 
you over Ascension. 

S/C Roger. 

ANT LOS Antigua. 

And this is Mission Control Houston at 70 hours 35 minutes and 
kO seconds after lift-off. We have had loss of signal at the 
last station in the Eastern Test Range, Antigua. We will be 
coming up over the Ascension Island station at approximately 
5 minutes. The Ascension Island voice remoting station. We will 
come up again at that time with the conversation through that 
station. This is Mission Control Houston. 
END OF TAPE 



GEMINI XII MISSION COMMENTARY H-lU-66 1:28 pm CST Tape 236 

Page 1 



This is Mission Control Houston at 70 hours kO minutes and 33 
seconds after liftoff. Spacecraft Gemini XII has just come up 
over the Ascension voice remoting station and we'll stand by 
for any conversation from Mission Control through the crew of 
Gemini XII. The duration of the pass over Ascension will be 
6 minutes 5h seconds. Pete Conrad is getting ready to put in 
a call to the crew. Let's eaves drop.... 

HOU Gemini 12 Houston, standing by at Ascension. 

S/C Roger we're going to try mode (garbled) 

HOU Say it a little slower, you're not too high yet. 

S/C We're trying Sll-3 to see if we could do it. 

HOU Roger, copy. 

This is Mission Control Houston, a rather quiet pass over 
Ascension Island the spacecraft Gemini XII just went in to 
darkness. They're running another run in the pitch mode of 
Sll Ion Sensing Attitude Control experiment at the present 
time. In approximately 9 minutes they'll be coming over the 
Tananarive voice remoting station. 

HOU Gemini 12, Gemini 12 Houston one minute to LOS 

Ascension 

We are less than one minute from loss of signal at the Ascension 
Island voice remoting station. Gemini 12 at the present time is 
in orbit with an apogee of 157.8 nautical miles and a perigee of 
lh2.7 nautical miles. We'll continue to stand by however, it is 
unlikely that any further conversation will take place over the 
Ascension Island. Tannanarive is coming up in approximately 8 



GEMINI XII MISSION COMMENTARY ll-lU-66 1:28 pm CST Tape 236 

Page 2 

minutes . 

This is Mission Control Houston apparently we have had loss of 
signal at the Ascension Island station. The flight plan calls 
for the crew to be conducting the Sll air glow horizon photography 
experiment at the present time. At 70 hours U9 minutes and 5U 
seconds after liftoff, this is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, W/lk/Gd, 1:^3 FM CST, TAPE 237 

PAGE 1 

This is Mission Control Houston. Gemini 12 is coming up over 
the Tananarive voice remoting station, field of acquisition. 
Spacecraft communicator Pete Conrad will be conversing with 
the crew through the station. There he goes. Let's listen. 



HOU Gemini 12, Gemini 12, Houston standing by 
at Tananarive. 

S/C Roger 

HOU 12, Houston, say again. 

S/C 

HOU Roger. Copy. 

TAN Tananarive has LOS. 



And this is Mission Control Houston 71 hours h minutes and 
as you were 71 hours 5 minutes after lift-off. We have had 
loss of signal from the Tananarive voice remoting station. 
That was a minimum conversation pass. We are coming up over 
Carnarvon in approximately 7 minutes. We will come back up 
at that time with the pass over the Carnarvon, Australia 
station. This is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER Ik , 1966, 1:59 pm CST 

TAPE 238, 
PAGE 1 



This is Mission Control Houston, Spacecraft Gemini 12 is 

now entering the acquisition range of the Carnarvon, Australia 

tracking station. Let's listen in. 



CRO 12, Carnarvon standing by. 

C and S-band track Carnarvon. 
SC Carnarvon, 12. We have just completed S-ll 

Mode C. 
CRO Okay. 

CRO All systems GO on Gemini . . 

HOU Roger. 

CRO Flight, Carnarvon 

HOU Go ahead. 

CRO Roger, our first Gemini main was no good due to 

a bad time label. Get you another one. 
HOU Okay, thank you. 

CRO Roger, this happens when he switches the hours 

G.M.T. 
HOU Okay 
AFD Carnarvon, AFD 

CRO Go ahead 

AFD Would you leave the C-band on for Wheeling? 

CRO I have already initiated TX, I'll try and 

get it back on again. 
HOU Roger 



GEMINI 12 MISSION COMMENTARY, NOVEMBER lU, 1966, 1:59 pm CST 

TAPE 238, 
PAGE 2 



CRO One minute to LOS at Carnarvon, standing 

toy. 

CRO . . . .all systems GO at LOS . 

This is Mission Control Houston. We've had loss of signal 
at the Carnarvon, Australia tracking station. Spacecraft 
Gemini 12 will he coming up over Hawaii in approximately 
16 minutes. At 71 hours 21 minutes and U3 seconds after 
liftoff this is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 2:25 pm CST Tape 239 

Page 1 



This is Mission Control Houston at 71 hours 38 minutes and 25 
seconds after liftoff. We have just had acquisition by the 
Hawaii Island tracking station. Let's listen in between... 
for the conversation. 

HAW Gemini 12, Hawaii Cap Com. 

S/C Hawaii 12, go ahead. 

HAW We have a short flight plan update for you when- 

ever you're ready to copy . 
S/C Roger, go ahead. 

HAW Okay, it will be for k5 over Kano§, it's S5 and S6 

. remote Bravo, over Mexico. S5 mode Alpha sequence 
2 and 6; S5 mode Bravo sequence 7; a red dye marker 
20 miles south of the mouth of the Mississippi, over. 

S/C Roger, that was on the next Rev? 

HOU The one coming up. 

S/C ...on the one coming up right now. Okay S5, S6 mode 

Bravo over Mexico, S5 Mode Alpha, sequence 2 and 6 
S5 mode Bravo sequence 7, red dye 20 miles south 
of the Delta. 

HAW Roger. 

S/C This is the last chance all experimentors come and 

get it. 

HAW Righto. Okay, in general information the data from 

D10 experiment has been very good. It looks like you 
are doing real fine on your attitude control. 



GEMINI XII MISSION COMMENTARY U-lU-66 2:25 pm CST Tape 239 

Page 2 



S/C Okay, understand (faded out) 

HOU Hawaii from flight. 

HAW Go flight. 

HOU And we want to leave the C-band on for the states 
track. 

HAW Okay, I'll real time him off the.... or do you want 

maybe just go ahead and leave TM on. 

HOU Yeah, let's just leave the TM on also. 

HAW Okay. 

HAW Gemini 12, we'll have LOS in a minute. 

S/C Hawaii Roger. Thank you. 

HAW Everything is looking real good for you. 

HOU Roger Hawaii. 

HAW Have LOS Agena still got Gemini 

HOU Roger. Okay Hawaii see you next pass. 



And this is Mission Control JJouston, we have had loss of signal 
at the Hawaii Island tracking station. We should be coming up 
momentarily on the California station on the first station of 
the stateside pass. During this pass the crew will take photograplB 
of some terrain objects in Mexico and also a red dye marker that 
is in the sea, some 20 miles off the mouth of the Mississippi Delta. 
And also on the high frequency or what is called, air to ground 



GEMINI XII MISSION COMMENTARY H-lU-66 2:25 pm CST Tape 239 

Page 3 



i two loop, some music will be piped up to the 
crew for their relaxation. We're standing by 
and California should be acquiring any moment 
now. Let's listen in. 

HOU Gemini 12 Houston standing by at California. 

S/C Houston 12 Roger 

HOU And if you've got your HF on we'll be bringing 

you the music in about 3 or k minutes. 
S/C Roger 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 2:35 p.m. TAPE 2k0 

PAGE 1 



HOU ...and before you get busy, could I get a PQI 

and a water gun count from you. 
S/C PQI is 25 percent. 

HOU Roger, 25 percent. 

S/C Water gun is 2033- 

HOU Roger 2033, and after you make your photo- 



graphy over the states, while we are still 
in Antigua acquisition, we would like full 
hydrogen fuel cell purge and a 30 seconds 
0 2 purge. You can do that at your con- 
venience, after you get done. 
S/C Understand - full hydrogen and 30 second 

o 2 . 

HOU That's correct, thank you. 

S/C That's section 2 , then 1. 

HOU That's affirmative. 

HOU Guaymas go remote, California go local. 

GYM Guaymas remote. 

CAL California local 

HOU 12, Houston, the music is rolling now, I'm 

not sure you are getting it right now, it's 
coming out of the Cape. 

S/C Oh, out of the Cape eh, okay, 

(music) 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 2:35 p.m. 



TAPE 2k0 
PAGE 2 



HOU Your fuel cell Delta P circuit breaker open 

or did the lights go out. 

S/c The circuit breaker is open, it was open for 

S-ll. 

HOU Okay 

S/C Standby now? 

HOU That's affirm. 

HOU Are you getting any music yet. 

S/C No, we have it turned way up. 

HOU It sounds great here on the ground. 

S/C Just coming in now. 

HOU Very good. 

S/C Man, we got the music. 

HOU Very good. 

S/C Trying to think what it was. 

HOU It's "Sound of Music". 

S/C Very good. 



END OF TAPE. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 2:U5 PM CST, TAPE 2^1 

PAGE 1 

S/C We couldn't pick it up. There is some 

cloud coverage over that area. 
HOU Roger. 

S/C It is coming through nicely now. 

HOU Very good. 

S/C Pete, we are over your favorite islands. 

HOU Roger. I noticed that. Would you care 

to name it? 

12, Houston. If you care to name it, 
you can join a very exclusive club. 

S/C Roger, understand it is... 

HOU That is affirm. 

12, Houston. Any time you can give us the 
fuel cell purge in the next 3 or k minutes, 
we would appreciate it, if you can. 

S/C Okay. Here we go now. 

HOU Okay, 12 we saw the purge. Would you give 

us your cyro switch to hydrogen position, 
please? 

S/C Hg. 

HOU Very good. Thank you. Still getting the 

music? 

S/C Just about faded out, Pete. 



L ^ L L L k 



GEMINI 12 MISSION COMMENTARY, 11/1^/66, 2:^5 FM CST, TAPE 24l 

PAGE 2 

HOU 12, Houston. You can put the cyro switch 

to off. 

Thank you. 
GTI LOS Turk. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 2:55 pm CST Tape 2k2 

Page 1 



(MUSIC PLAYING) 

HOU 12 Houston, one minute to LOS Antigua, see you 

over Ascension. 
S/C Roger. 

LOS Antigua 

And this is Mission Control Houston at 72 hours and 11 minutes 
and 2 seconds after liftoff, with spacecraft Gemini 12 going 
over the hill in the eastern test range to Julia Andrews sing- 
ing "My Favorite Things" from "The Sound of Music". This is 
Mission Houston. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 3:02 pm CST Tape 2^3 

Page 1 

This is Mission Control Houston 72 hours 16 minutes and k seconds 
after liftoff. They have had acquisition of signal at the Ascen- 
sion Island voice remoting station. We'll stand by for any possi- 
ble conversation between the spacecraft and Houston. Let's listen 
now. 



HOU Gemini 12, Gemini 12 Houston standing by at 

Ascension. 

HOU Gemini 12, Gemini 12 Houston standing by at 

Ascension. 

HOU 12 Houston through Ascension, we're about one 

minute 30 seconds to LOS standing by. 
S/C Roger, we're in D10 mode, 

HOU Roger, D10 mode B 



And this is Mission Control Houston, 72 hours 25 minutes and 7 secon* 
after liftoff. We've had ascension loss of signal. Approximately 8 
minutes spacecraft Gemini XII will cross the Tananarive voice remoting 
station. We'll come back up at that time with any conversation. 
This is Mission Control Houston. 

END OF TAPE 



GEMINI 12, MISSION COMMENTARY, ll/lU/66, 3:19 p.m. TAPE 2kk 

PAGE 1 



This is Mission Control Houston at 72 hours, 32 minutes, and 
57 seconds after liftoff. Coming into the acquisition area 
of the Tananarive voice remoting station. Duration of this 
pass will be 6 minutes and 50 seconds. We are standing by 
for Pete Conrad to put in a call through Tananarive to the 
crew of Gemini 12. It may be just a standby call. There 
he goes, let's listen. 

HOU Gemini 12, Gemini 12, Houston through 

Tananarive standing by. 
S/C Roger 
HOU Okay 

HOU Gemini 12, Houston, one minute to LOS 

Tananarive. 
S/C Roger. 
TAN Tananarive LOS 

And this is Mission Control Houston. 72 hours, kO minutes and 
21 seconds after liftoff. We have had loss of signal at 
Tananarive. Carnarvon in approximately 8 minutes. This is 
Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/1^/66, 3:35 PM CST, TAPE 2k$ 

PAGE 1 

This is Mission Control at 72 hours ^8 minutes and 3k seconds 
after lift-off. Spacecraft Gemini 12 is coming over the hill at 
Carnarvon, Australia tracking station. And they now have telemetry- 
somewhat at Carnarvon. We will stand by to monitor any air-to- 
ground conversation. Let's listen in. 



CRO Carnarvon standing by. 

S/C Roger. When we finish up on D-10, I think 

we have time to sneak in mode C. I think we 
can do that. We will do a minute in mode 
D. 

CRO Okay. See an S-band track at Carnarvon. 

HOU Carnarvon Com Flight. 

CRO Go ahead. 

HOU What mode did he say he was going to try that 

sneak in while he had time. 
CRO Charlie. 

HOU Roger. Carnarvon Com Plight. 

CRO Go ahead. 

HOU We want to leave the C-band on. 

CRO Okay. I will turn it back on for you. 

12, Carnarvon. 1 minute until LOS, see you 

tomorrow . 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 3:35 PM CST, TAPE 2k5 

PAGE 2 

S/C Roger, and thank you. 

CRO Carnarvon has LOS Gemini and Agena. All 

systems go at LOS. 
HOU Okay, Carnarvon. Sounds like it is time 

for breakfast. 
CRO Roger, that. 

And this is Mission Control Houston. We have had loss of 
signal from Carnarvon, Australia tracking station. That was 
the last pass for today over Carnarvon. The next revolution 
will bring the spacecraft Gemini 12 over the first pass for the 
tracking ship Coastal Sentry South of Japan. Our next station 
in this revolution is the Hawaii Island tracking station. In 
approximately 18 minutes, we will come back up at that time for 
that pass. This is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 U:00 pm CST Tape 2h6 

Page 1 



This is Mission Control Houston, 73 hours 13 minutes and 19 
seconds after liftoff. Gemini XII ie just coming over the 
hill at Hawaii. Should be getting contact through telemetry 
and air to ground. We'll stand by for contact to be established. 
This is an 8 minute 8 second pass over Hawaii. Let's listen in. 



HAW Gemini XII Hawaii Cap Com 

S/C This is 12 Hawaii, we're finishing up D10 mode C 

HAW Roger. 

I have one item update for you whenever you are 

ready to copy. 
S/C Roger, stand by 

Go ahead. 

HAW Roger, this will be on this upcoming night pass. 



There is an S29, from FDS pitch up, 90 degrees 
east, U minutes after sunset to acquire saturn. 
Libration region then is approximately on camera 
axis if Sll bracket is used. 
S/C Roger, understand, pitch up 90 degrees k minutes 

after sunset, pick, up saturn and the Sll bracket 
will be pointing at the libration region, thank 
you. 

HAW Roger . 

HOU Hawaii from flight. 

HAW Go flight 



GEMINI XII MISSION COMMENTARY ll-lU-66 U:O0 pm CST Tape 2k6 

Page 2 



HOU Hawaii from flight. 

HAW Go flight. 

HOU The Agena wants to know when you do get that load 

in, the clock load. 
HAW Yeah, it's in, and verified. 

HOU Thank you. 

HAW Rog. 
S/C Hawaii 12 

HAW 12 Hawaii 

S/C Do you have sunset time or a time k minutes after 

sunset? 
HAW Stand by 

HOU Hawaii flight 

HAW Go flight 

HOU Sunset GET is 73 + ^ + 51 

HAW 12 Hawaii, your sunset time will be 73 + hh + 51 

S/C Roger 73 51 

HAW Roger 

Flight we've got a problem on our time label on our 
automatic summaries so there probably not getting 
in there. 

HOU Okay, thank you we'll watch for it. 

HAW Roger, we're looking for it right now. 

The first two went out and then we hit the problem 
HOU Okay 



GEMINI XII MISSION COMMENTARY ll-lU-66 K:00 pm CST Tape 2h6 

Page 3 



HAW 



Gemini 12 Hawaii, one minute to LOS 



S/C 



Roger 



HAW 



We've had LOS both vehicles. 



And this is Mission Control Houston. We've had loss of signal at 
the Hawaii Island tracking station. While we are waiting for them 
to come over the hill at California we'll summarize briefly the 
conversation over Hawaii. The crew of Gemini XII was giving point- 
ing instructions for a run of the S29 librations region photography 
experiment which would use the planet saturn as a reference point. 
This will occur some h minutes after their sunset which will be at 
73 hours Uk minutes and 51 seconds ground elapsed time. We're 
standing by now for California acquisition. 



END OF TAPE 



GEMINI 12, MISSION COMMENTARY, ll/lU/66> U:10 p.m. TAPE 2kj 

PAGE 1 



Still standing by for the State side pass. Now Conrad is 
putting in a call to Gemini 12. 



HOU 12, Houston standing by California. 

S/C Roger 

HOU Ed, do you still have your HF up. 

S/C We can get it up. 

HOU Okay, why don't you get it up, we got one 

more pass there and we got a little tune or 
two for you. 

S/C Very well. 

HOU Guaymas go remote, California go local. 

GYM Guaymas remote. 

CAL California local. 

HOU Are you picking up any music yet 12. 

S/C Not yet. 

HOU Okay. 

S/C We are doing D-10, Mode A now Houston. 

HOU Roger, very good. 

HOU 12 , Houston , we are reading your D-10 on 

the ground, and it looks like you've got 

a real good alignment. 
S/C Yes sir, it looks like all these thrusters 

degraded so much they are coming out even now. 
HOU Right. You picking up any music yet. 

S/C Nope, haven't picked up any music yet, looks 

like we are passing over Acapulco again. 
HOU Roger. Everybody in Amoco is enjoying the 

music, sorry we are not getting to you. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 1+:10 p.m. TAPE 2k7 

PAGE 2 



HOU 12, Houston, any time you can, we would like 

another 30 second oxygen purge at your 
convenience. 

S/C Roger . 

HOU Texas go remote, Guaymas go local. 

TEX Texas remote. 

GYM Guaymas local. 

(Music) 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, k:20 PM CST, TAPE 2k8 

PAGE 1 

HOU (Jlusic) Thank you for the purge. Did you 

get the music? 
S/C Roger. What song were they playing? 

HOU Going Back to Houston. What else? 

S/C Yes. 

HOU We had a meeting in the office this 

morning and we just voted you two guys 
the two astronauts that can get the 
most attitude control out of the least 
thrusters . Congratulations . 

S/C Fine. Say, as a matter of interest, Pete, 

that smudge on the window looks like it is 
on the outside of the first window, Buzz 
wipped my window off and it is pretty 
clean now. 

HOU Roger. 

ANT LOS Antigua. 

GTI LOS GTI. 

HOU 12, Houston, was he in plat mode? Was it 

working all right? 

S/C Yes, it fired off . . .if you get it right in 

there it looks it holds. There is very 
very little disturbance. She will just sit 
there for awhile. ...hit the deadbands yet. 

HOU Roger. 



GEMINI 12 MISSION COMMENTARY, 11/1^/66, k:20 PM CST, TAPE 2k8 

PAGE 2 

S/c It is holding a little "bit, Houston. However 

it could maintain. . . 
HOU I am sorry I did not copy the first part of 

that. Would you say again? 
S/c It is holding, but it is. . .needles. 

HOU You mean you are sitting up against deadband. 

It looks to us on the ground, 12, like you are 

sitting right up against the deadbahds. 
GTI LOS Turk. 

HOU 12, Houston. We are about 1 minute 30 seconds 

to LOS. It looks to us on the ground like it 
was holding within the deadbands. 

S/C Yes, that is right. She is holding. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 U:30 pm CST Tape 2k9 

Page 1 

HOU 30 seconds, see you at Ascension 

LOS Antigua 

And this is Mission Control Houston. We've had loss of signal at 
the Antigua station of the eastern test range. Be coming up on 
Ascension Island voice remoting station in approximately 8 minutes. 
At this time the crew should be getting set up for their libration 
regions photography experiment. It was reported that they have 
some 210 pounds of usable propellant remaining. Also during this 
just completed stateside pass more music was piped up to the crew 
over the second air/ground loop. One portion of the music included 
"Going Back To Houston". At 73 hours U5 minutes and 3 seconds 
after liftoff this is Mission Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, k:39 p.m. TAPE 250 

PAGE 1 



This is Mission Control Houston. The spacecraft Gemini 12 
has just been acquired by the Ascension Island voice remoting 
station. We are standing by for Pete Conrad to put in a call 
through the station to the crew of Gemini 12. There he goes, 
let's listen. 

HOU Gemini 12, Gemini 12, Houston through Ascension - 

Over. 

HOU Gemini 12, Houston through Ascension. You 

don't have to acknowledge this, when you 
finish your S-29, you can go ahead and 
power down your platform. 
This is Mission Control Houston standing by at Ascension for 
any further conversation. There is a little over a minute 
remaining of this pass over the Ascension Island station and 
we will continue to standby until loss of signal. 
HOU Gemini 12, Houston, one minute to LOS Ascension. 

S/C Roger 

And this is Mission Control Houston, apparently we have had 
loss of signal at the Ascension Island tracking station. We 
will come back up during the pass over Tananarive voice remoting 
station in approximately nine minutes. At 73 hours, 59 minutes, 
and 23 seconds after liftoff, this is Mission Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lty66, k:5h m CST, TAPE 251 

PAGE 1 

This is Mission Control Houston. Jk hours 8 minutes and 

k seconds after lift-off. Gemini 12 is coming up over the 

Tananarive voice remoting station. Should be getting acquisition 

any moment. Let's listen in to the conversation. 

HOU Gemini 12, Houston standing by at Tananarive. 

Gemini 12, Houston standing by at Tananarive. 
S/C Roger. 

HOU Now that you have had time to fly a little 

bit, does it seem like you have gotten any 
of your thrusters back or a little more 
stuff out of them or are you in about the 
same shape? 

S/C We are in about the same shape. It is just 

that.... I think we get a little bit of thrust 
out of them. ..or just dumping fuel out. 
Now with this type of work, we are not moving 
the spacecraft around... 



HOU Roger. Very good. 

S/C ...yaw left or try to roll left, you pitch 

up and things like that. 
HOU Roger. 
S/C Houston, 12. 

HOU Go ahead. 



GEMINI 12 MISSION COMMENTARY, ll/lV66, k:5km CST, TAPE 251 

PAGE 2 

S/C 

HOU Say again. 

S/C Powering down. We just finished S-29. 

HOU Very good. You are really clicking them 

off. Looks good. 

And you can go ahead and power down the 
platform anytime. 
S/C Roger. 

HOU Three or four more days up there and you 

will really get them all done. 
S/C Thanks a lot. 

HOU 12, Houston. One minute until LOS Tananarive. 

S/C Roger. 

TAN Tananarive LOS. 

And this is Mission Control Houston. We have had loss 
of signal at the Tananarive voice remoting station. The 
next station to be acquired will be~the tracking ship Coastl 
Sentry. In approximately 15 minutes. At Jh hours 16 minutes 
and 32 seconds after lift-off, this is Mission Control Houston. 
END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 5:l8 pm CST Tape 252 

Page 1 



This is Mission Control Houston. Gemini XH is coming up over 
the Coastal Sentry tracking ship. They have acquired the Agena 
and we're standing by for Gemini to be acquired by electronic 
gear aboard the tracking ship. We have solid telemetry on 
Gemini. Gemini is go. Standing by for spacecraft communicator 
Bill Garvin to put in a call... there he goes, let's listen. 



CSQ Gemini 12 CSQ 

S/C go ahead. . 

CSQ The only thing we've got for you this pass is 

an S6 experiment 

S/C What is it? 

CSQ It's a Midway area. It's a cloud photography. 

Time 7k k7 2k, that's yaw zero at pitch down 
30. 

S/C time again CSQ? 

CSQ" The time was 7k k7 3^1 

HOU 2k 

S/C Delta time CSQ, I'm reading you 35. 

CSQ Roger . 

S/C Copy, you would like a count from us. 

I copy, you want a count from us, affirmative? 
CSQ Roger . 

S/C CSQ? 

HOU Come in CSQ. 

CSQ Go ahead 



GEMINI XII MISSION COMMENTARY 11-18-66 5:l8 pm CST Tape 252 

Page 2 



HOU Go ahead 

CSQ Houston, he's completely powered down, he's got the 

B pumps on. 
HOU He's got the B pumps on? 

CSQ flight 
CSQ Go ahead 

HOU Just for the record we ought to have that Delta P 

circuit breaker on when the crew is ready to do it. 

CSQ Do you want me to have them turn the Delta P circuit 

breaker on? 

HOU Affirmative. When they are ready to. 

CSQ Okay 
CSQ 12 CSQ 

S/C Go ahead 

CSQ You can go ahead and turn the Delta P circuit breaker 

on. 

CSQ CSQ is one minute to LOS 

S/C November Delta Tango 

CSQ LOS on Gemini. 

HOU CSQ are you copying that Tango? 

CSQ Roger. Flight. A term the question the people are 

working in loops . 
HOU Say again. 

CSQ I say, somebody's working on the circuit. 



And this is Mission Control Houston at 7h hours 37 minutes and 30 sec 
onds after liftoff. We have had loss of signal on Gemini 12 from the 



GEMINI XII MISSION COMMENTARY 11-18-66 5:l8 pm est Tape 252 

Page 3 

tracking ship Coastal Sentry. During that pass instructions point- 
ing instructions for an S6 synoptic weather photography experi- 
ment picture were passed up to the crew. Near midway Island at 
an elapsed time of 7b U7 2h. This is about 10 minutes from now. 
Gemini 12 will be acquired by the Hawaii tracking station in 
approximately 9 minutes. At 7U 38 minutes and 16 seconds after 
liftoff this is Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY 11/11+/66, 5:35 p.m. TAPE 253 

PAGE 1 



This is Mission Control Houston, 7h hours, U9 minutes and k 
seconds after liftoff. Should be acquired by the Hawaii 
Island tracking station at any moment. Standing by for in- 
dications from the spacecraft communicator out at Hawaii, 
Keith Kundel. He is putting in a call now, let's listen in. 



HAW Gemini 12, Hawaii standing by. 

S/C Roger. 

HAW And he has closed the Delta P circuit breaker. 

HOU Roger. 

HAW He said that the power relay would not reset 

on the Agena, so we sent the command. 
HOU Roger. 

HAW Pilots internal lead indicates that is loose. 

At least we are not getting anything out of it. 
HOU We had that earlier. 

HAW Okay, just thought we would check on it. 

HAW Okay, he just turned the OAMS control system 

back on again. 
HOU Roger 

HAW Playing the tape dump on Gemini. 

HOU Roger 

HAW Gemini 12, Hawaii, one minute to LOS. 

S/C Roger . 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 5:35 p.m. TAPE 253 

PAGE 2 



HAW LOS Hawaii, all GO. 

HOU Roger, Hawaii - see you next pass. 

And this is Mission Control Houston. We have had loss of 

signal at the Hawaii station. In approximately one minute 

the spacecraft Gemini .12 will be coming across the California, 

Guaymas, Texas acquisition areas. However, it will not be 

what you would call a stateside pass in that they stay off 

shore during this pass in the Pacific and eventually cross 

the West coast of South America at approximately Bolevia. 

They will not come over the stations of the Eastern Test 

Range. This will also be the last stateside pass of the 

evening. Let's join the conversation. 

HOU Gemini 12, Houston at California - over. 

S/C Roger - Gemini 12. 

HOU Okay, I've got your sunset time for your 



END OF TAPE 



GEMINI XII MISSION COMMENTARY ll-lU-66 5:^5 pm CST Tape 2^k 

Page 1 



HOU Okay I've got your sunset time for your T2 

mode A sequence 1 if you are ready to copy. 
S/C Go ahead 

HOU Roger. 75 + 15 + 01 

S/C Roger 

HOU And you can turn your x-ray on Beta with 

mag and leave it on for the rest of the 
night please sir. 

S/C Okay 

HOU And that's it, we're standing by. 

S/C Roger. 

HOU Guaymas go remote California go local 

GYM Guaymas remote 

CAL California local 



This is Mission Control Houston again. A fairly quiet pass this 
time over the states or over the stateside stations at any rate. 
So far the only conversation is involved updating on sunset time 
of the upcoming T2 Space sexton experiment. The experiment is 
scheduled on the flight plan for 75 hours 18 minutes ground 
elapsed time and it will be measurements angular measurement with 
the sexton between the stars Betelguese and Rigel. The ground 
measured angles are 18.6 degrees and an earlier measurement with 
the sexton in the mission they have come up with measurements out 
to 3 decimal points. l8.6ll with the sexton which is pretty close 
probably more accurate than the ground measurements. We'll continue 



GEMINI XII MISSION COMMENTARY ll-lU-66 5:1+5 pm CST Tape 25^ 

Page 2. 

to monitor the air/ground during this final stateside pass of 
the evening for any further conversation. 



HOU 12 Houston 

S/C Go ahead 

HOU Roger, after you get these readings this time 

if you could pass those to CSQ we'd like to 
look at them tonight to influence what we 
give you tomorrow with respect to the T2. 

S/C Okay, we'll give it a try. 

HOU Okay and I thought you ought to know that we've 

got the big TR clock started up and counting on' 
the board. It's 18 53 58 and counting down. 

S/C Sounds good. 

CSQ Texas go remote Guaymas go local 

HOU Texas remote 

GYM Guaymas local 

HOU 12 Houston, one minute to U.S. LOS 

S/C Roger 

HOU Have a pleasant evening. 

S/C A night on the town. 

HOU Tonight is the big fight here in Houston between 

Clay and Williams. We'll keep you advised. 
S/C It is tonight. 



And this is Mission Control Houston. Apparently we've had loss of 
signal off the lower edge of the Texas station. Gemini XII will 
pass at the very extreme northern hitch of the Rose Knot tracking 



GEMINI XII MISSION COMMENTARY ll-lfc-66 5:^5 pm CST Tape 2514- 
Page 3 

acquisition area. The elevation angle during this pass will be 
.25 degrees which is just barely over the horizon. At 75 hours 
9 minutes and hi seconds after liftoff this is Mission Control 
Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/llf/66, 6:30 IM CST, TAPE 255 

PAGE 1 

This is Mission Control Houston at 75 hours 1+3 minutes and 
k seconds after lift-off. Gemini 12 is coming up over the 
Tananarive voice remoting station. We will stand by for any 
transmission from Mission Control here through the Tananarive 
station. The pass over the Tananarive station will last about 
8 minutes and 12 seconds. The crew should be beginning their 
eat period at approximately 7 minutes . Retrof ire clock here 
in Mission Control now shows 18 hours 15 minutes and 35 seconds 
until retrof ire. Still standing by for any possible air-to- 
ground communication through Tananarive. Here we go. 
HOU 12, Houston standing by Tananarive. 



Houston, Gemini 12. 



s/c 



Roger, .copy. 



HOU 



Okay, are you busy? 



S/C 



Well, we are trying to fix it... stow to 



get ready for dinner. 



HOU 



Okay, I got a couple of things if you can 



copy, if not we can give it to you at CSQ. 



s/c 



I will get it at CSQ, Pete. 



HOU 



Okay. 12, Houston. You need not acknowledge. 



but right now CSQ air-to-ground, both trans- 



mitters are out and they may not be up on 



your pass over them. 



S/C 



Roger, understand, CSQ is out at this time. 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 6:30 PM CST, TAPE 255 

PAGE 2 

HOU Yes. (PAUSE) 12, Houston. One minute 

until LOS Tananarive. 
S/C All right. 

TAN Tananarive LOS. 

And this is Mission Control, Houston. We have had loss 
of signal through the Tananarive voice remoting station. 
The next station pass will be the Coastal Sentry in approxi- 
mately 15 minutes. Meanwhile, the present weather in the 
prime landing area in the Western Atlantic, we have scattered 
clouds at 2500 feet, winds from the north at 13 knots, visibility 
10 miles, waves 2 feet high, no swells. Forecast for tomorrow 
in the prime landing area, 2000 feet scattered broken, - scattered 
to broken clouds', wind out of the north at 15 knots, 10 miles 
visibility, k foot waves, 5 to 7 foot swells. A weak cold 
front is due to pass through the prime landing area early 
Tuesday morning. At 75 hours 53 minutes and 9 seconds after 
lift-off and 18 hours 6 minutes U6 seconds until retrofire, 
this is Mission Control Houston. 

This is Mission Control Houston. For the world-wide weather 
outlook, we have with us this afternoon, Mr. Ken Negler, of 
the U. S. Weather Bureau. He (tape skips) - composite of 
satellite series of photos of weather. Ken, that looks like 



GEMINI 12 MISSION COMMENTARY, ll/lV66, 6:30 PM CST, TAPE 255 

PAGE 3 

the Indian Ocean area. Is that correct? 

NEGLER Yes, this is the Indian Ocean area. A picture 

taken earlier today by the ESSA III satellite. 
Now in our weather support of manned missions, 
we have used weather satellite information for 
a number of years. But this is a new form 
of this data. A mosaic whereby the data is 
printed out in map form and it turns out to 
be very usable. Here, in the - this is the 
Arabian pensula here, Africa, and this is the 
remanents of a tropical storm, a typhoon which 
moved from the Arabian Sea into Arabia. And 
here, over India, is another tropical storm 
which moved in and is dissipating over India 
today. As you can see, you can very clearly 
make out the ocean, and continents on this 
new mosiac. Here is another map, this was 
taken yesterday afternoon of the North 
Atlantic area. Here we have drawn on the 
continental boundaries, because they didn't 
show up quite so well, but this shows the 
type of very broad coverage that we can 
see each day, from the weather satellite. 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 6;30 FM CST, TAPE 255 

PAGE 1+ 

NEGLER Of interest here was the frontal weather 

that we had moved through yesterday. This 
has cleared out. Today of course. And this 
is a disturbance in the Central Atlantic that 
we have been watching, but it is well to the 
east of our landing area out there. We just 
thought this would be rather interesting because 
it does give us such a very broad view of the 
cloud systems and all around the world, each 
day. 

MISSION CONTROL In all likelihood, then, the crew of Gemini 12 
has been photographing these areas in the 
S-6 Synoptic Weather Photography experiment. 
This should be quite interesting to see when 
they get back. We thank you a lot, Mr. Negler, 
and we will be talking to you later as we 
approach splashdown tomorrow morning. This 
is Gemini Control. 



GEMINI 12 MISSION COMMENTARY , ll/lk/te, 6:53 p.m. TAPE 256 

PAGE 1 



This is Mission Control Houston, 76 hours, 5 minutes, kk sec- 



onds after liftoff. Spacecraft Gemini 12 has just been ac- 
quired by the tracking ship Coastal Sentry South of Japan. 
During this pass over the Coastal Sentry there is a series 
of planned landing updates that will be passed up to the crew. 
Purge of the fuel cells and a readout of cryogenic oxygen 
remaining. We will standby for the conversation... there 



it starts. 



CSQ Gemini 12, CSQ. 

S/C Roger. 

CSQ Go ahead, start your fuel cell purge whenever 

you are ready. Section 1 and then section 2. 
Regular purge. 

S/C One and then two. 

CSQ And I've got a PLA update for you and also a 

flight plan update. 
S/C You want to give me the flight plan update, Mike. 

CSQ Okay. 
S/C .... garble . . . 

CSQ Cryo 75 5920 - ^889. .2 degrees East - right 



Ascension. 10 hours, 17 minutes. 76l6lU S-6 
yaw left U3 degrees, pitch down 30 degrees - 
Marcus Island. 762233 S-6 yaw 10 degrees, 
pitch down 30 degrees - Midway Island. 
76:28:26 S-6 yaw right 0 degrees. Pitch 
down 30 degrees - Hawaii Islands. That's 
the end of the update. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 6:53 p.m. TAPE 256 

PAGE 2 



S/C For the S-6 yaw left 

CSQ The second S-6 was yaw 0 degrees, pitch 

down. The first one I gave you was yaw left ^3 
degrees. 

S/C Roger - have it. 

CSQ The spacecraft . . . Flight 

HOU Roger 

S/C 2 minute purge check. 

CSQ That's affirmative. 
S/C. 

CSQ Okay, 1+9-3 Alpha. 77:21:Olj- . . . 0 + 38, 26 + 16. 



The bank angles for all areas are roll at 85, 
roll right 95. The weather is good in all 
areas. Area 50-3 Alpha 78:56:38 30 +28 
25 + 58, Area 51-3 bravo 80:32:l6 20+02, 
25 + 30 , Area 52 -CC 82:06:10, 19 + hk, 

25 + 09. Area 53-AC 83:02:U6, 20 + Ik, 

26 + 05. Area 5^-AC 81+:36:59, 20 + 25, 



26+13. Area 55-A 86:12:39, Uh delay 
that, that's 86:^2:36, 20 + 36, 26 +20. 
That will be the update. 

S/C Roger, have them all - thank you. 

CSQ Flight, CSQ. 

HOU Go ahead. 

CSQ Okay, the purge is going good, we're just 

about finished. 

HOU Okay. Glad to hear you have your air-to-ground. 

CSQ Got some good techs out here. 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 6:53 p.m. TAPE 256 

PAGE 3 



CSQ Flight, CSQ 

HOU Go ahead 

CSQ Uh, we show the Agena ... load reset. 

HOU Roger - Okay, have you got everything down then 

except T-2. 
CSQ Say again Flight. 

HOU Did you get all your pass side completed. 

CSQ I have not got the cryo readout yet. I'll 

wait until they finish this purge. 
HOU Okay, and then see what you can get on T-2, 

he said he would try to read them down over 

your site. 

CSQ I can't read you too well Flight. 

HOU And he also said he would try to read you 

the T-2 numbers. 
CSQ P-2 numbers? 

HOU Tango 2 numbers. 

CSQ Okay 

CSQ Would you put the cryo switch to 0^. We 

are standing by to copy the T-2 numbers if 
you get a chance. 

S/C Roger, we switched to 0 2< 

CSQ Okay, would you go to H 2 - 

S/C pressure reads 75- +2 00 +37 ... 25 ... 

50 55 ... -5 U5 ... 105 U38 38 ... 

18.04 05 ... B ... 08 k 05 (fading) 

HOU CSQ, Flight. 

CSQ Go ahead Flight. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 6:53 p.m. TAPE 256 

PAGE k 



HOU Did you get all the way through it. 

CSQ Negative, I got LOS here. I copied a part 

of it, didn't copy all. The air-to-ground 

was pretty rattie. 
HOU Okay, send in what you have. 

CSQ Roger, will do. 

And this is Mission Control Houston. We have had loss of 

signal at the tracking ship Coastal Sentry. Coming up on 

Hawaii in approximately 9 minutes. We will standby and 

come up again at that time. At 76 hours, 15 minutes, 

hi seconds after liftoff, and 17 hours, kk minutes^ Ik seconds until 

retrofire, this is Mission Control. 



END OF TAPE 



\ 

i 

GEMINI XII MISSION COMMENTARY ll-lU-66 7:11 pm CST Tape 257 

Page l 

This is Gemini Control 76 hours 2k minutes 3 seconds in to the 
mission of Gemini XII. Gemini XII spacecraft is approaching the 
Hawaii tracking station we should hear comments between the crew 
and Hawaii at that time. Hawaii should acquire the spacecraft 
as of 1 second ago. 



That's affirm 

HOU Okay we've got initial contact, still pretty 

shakey. 
HAW Rog. 

HAW just taking pictures here. 

This is Gemini Control we've had no voice contact yet with the 

Hawaii station, but we should be completing 

HH? Hawaii: 

S,'J Go ahead Hawaii, 12 here. 

HAW We were having LOS on the CSQ could you give another 

readout on your T2 experiment? Please. 
S/C Roger, did you copy any of it? 

HAW Oh, we might have gotten some of it let's do the 

whole thing over again. 
HOU Hawaii AFD 

HAW Go 

HOU Like all the Agena sums at your LOS 

S/c Okay, the reference time is 75 12 00, first measure- 

ment 05 elapsed time 08 1^ l/2. Give you the last 



GEMINI XII MISSION COMMENTARY ll-lU-66 7:11 pm CST Tape 257 

Page 2 



two numbers. 95 95 95 05 03 star to star measurement 
18.60U the remaining will be the last two numbers 
05 08 05 09 Ok 05 06 06 05 OU 05 06 OU, did you 
copy. 

HAW That's affirmative 12, thank you. 

S/C And the last measurement elapsed time from the refer- 

ence 29 11 point zero. 
HAW Roger 

S/C And at the 05, the reason for jump the first three 

to the last two is that the cog seems to hang up 
in the vicinity of zero and it jumps across there 
if your' re very careful, I'll have to look at that 
a little bit more. 

HAW Roger. Thank you. 

HOU Hawaii AFD 

HAW Stand by. Okay, go ahead, I was trying to make 

sure I got it all copied down while I still remember. 
HOU Okay, did they get the H2 heater on to raise the 

pressure, then go back to auto? 
HAW Negative, not as yet. As far as I know on the H2 

stand by one Okay we're showing 265 on H2 which 

is up pretty high. 
HOU Say again the number 

HAW 265 PS I 

S/C 12 Hawaii, could you give us a PQI please. 



GEMINI XII MISSION COMMENTARY 11-3A-66 7:11 pm CST Tape 257 

Page 3 



HAW its.... about 23 or 2k percent 

S/C Roger, thank you. 

HAW What do you think AFD 

HOU Go ahead 

HAW Do you still want to hump it up higher? 

We don't think the heaters on here. 
HOU Bill, get us a crew status report here before 

you lose them. 
HAW Rog. 

Okay, the crew status reports verify the H2 heater 

is in auto. 

HAW Gemini 12 Hawaii, would you verify the H2 heater is 

in auto. 

S/C Roger, it's in auto, do you want us to at this time 

run it up to 667 right? 

HAW Rog. And we'd like a clear status report. 

S/C The drink counter is 207*4- . We haven't had a change 

of pressure yet. The pilot has eaten three meals 
today, the command pilot only two since he was trying 
to find Hawaii all this time. And I'll try and get 
at it as soon as I can. And no sleeping so far today 

HAW Okay, thank you much. 

12 Hawaii we'll have LOS in about a minute here 
and we would like to say Good Night from the Garden 
Island of Hawaii. 

S/C Thank you. Garden Island. 

HAW Aloha 

S/C Rog. 



GEMINI XII MISSION COMMENTARY ll-lU-66 7:11 pm CST Tape 257 

Page k 



This is Gemini Control, we will have no further conversation from 
the crew this evening. They are now in their sleep period at 
76 hours 32 minutes 20 seconds in to the mission. The wakeup 
time should be about 8k hours 30 minutes. A short recap, 
the weather in the west Atlantic landing area as you heard before 
is anticipated to be good for tomorrow. The planned landing time 

you just heard the crew status report, the pilotate three 

meals, the command pilot ate two meals today. The H2 heater is 
on automatic position, the PQI as it is referred to or the pro- 
pellant quantity in the OHMS orbittal attitude maneuvering 
system stands at 23. k percent. The spacecraft is in good shape 
everybody said good night to them, they are now in a sleep period. 
At 76 hours 33 minutes ih seconds in to the mission this is Gemini 
Control. . . . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lty66, 7:50 PM CST TAPE 258 

PAGE 1 

This is Mission Control 77 hours 3 minutes ( skipped).. 1 seconds 
into the mission of Gemini 12. The position of this Gemini 12 
spacecraft presently is over the South Atlantic. The Tananarive 
tracking station should acquire at 77 hours 10 minutes 23 seconds. 
The crew entered their sleep period at 76 hours 32 minutes, which 
is a half an hour ago. Presently, in MCC we have the White Team 
on duty. This is the only team in the history of Gemini, I believe, 
that changed its color in the middle of the mission. We started 
as the Blue Team. We are now the White Team. Gene Kranz is acting 
as Flight Director. We have relieved the Black Team. Astronaut 
Gordon Cooper is presently in the Control Center conversing with 
Bill Anders and with Gene Kranz on the flight. During the sleep 
period, the D-10 Ion- sensing attitude control equipment will be 
on in mode foxtrot, for random data during drifting flight during 
this sleep period. The Flight Director has checked out his 
controllers; all controllers indicate that systems look okay. 
The fuel cells are operating in good condition. This is the 
last night and the last flight in the Gemini Program. 77 hours 
k minutes 55 seconds into the mission, this is Gemini Control. 

END OF TAPE 



I 



GEMINI XII MISSION COMMENTARY ll-lA-66 8:50 pm CST Tape 259 

Page 1 



This is Gemini Control 78 hours 3 minutes 31 seconds in to the 
flight of Gemini 12. The position of the spacecraft is in the 
acquisition area of the Hawaii tracking station. The pilots 
entered their sleep periods one hour and one half ago at 76 hours 
32 minutes in to the mission. We have had ho voice contact with 
them since that time. The Hawaii tracking station reports the 
command pilot is asleep, the pilot is probably awake at this 
time. At 78 hours h minutes 6 seconds in to the mission, 15 
hours 55 minutes 1*8 seconds until retrofire, this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 9:11 p.m. TAPE 260 

PAGE 1 



This is Gemini Control, 78 hours, 2k minutes, 5 seconds into 
the mission of Gemini 12. We have come up to a position here 
now where the Flight Director Gene Kranz. , because of the 
hydrogen pressure in the fuel cell system, has decided that 
he should wake the crew up at the Rose Knot tracking ship on 
the West Coast of South America and request the pilot to 
check to be sure that the hydrogen, the switch is in the 
Auto position. We are standing by now for the Rose Knot 
contact with the astronauts in Gemini 12. 
RKV 

HOU Okay, Bill, after you are through with that 

if the crew has time, if Jim comes up, ask 
them since they are awake, you could have 
them give you a 30 second 0 2 purge. 

RKV Roger. ...Ok reads 350. 

hou 350 

RKV That's affirm. 

HOU Okay, wait until you get about another 

30 seconds in your pass and then wake the 
crew up. 

RKV Roger -They don't look like they are asleep. 

HOU Okay. 

This is Gemini Control, in about 28 seconds the RKV will wake 
the crew up and you heard the instructions given by Gene Crance, 
the Flight Director, we are now awaiting that time to find out 
about the H^ switch. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 9:11 p.m. TAPE 260 

PAGE 2 



RKV Gemini 12, RKV. 

RKV Gemini 12, RKV. 

S/C Go ahead RKV. 

RKV Hate to bother you Gemini 12, but your H ? 

looks like it is building up a little bit. 

Would you verify the position of the Hg 

switch as being OFF. 
S/C That's right it is OFF, we noticed the same 

thing 

RKV Okay, would you place the switch to OFF. 

S/C It's off. 

RKV Roger, apparently 

HOU[ RKV Com Houston Flight 

RKV Roger - standby one. - Go ahead Flight. 

HOU Roger, did he place the switch to OFF when you 

ask him, or did he have it off. 
RKV He had it in Auto, and the pressure was still 

building up, and then he placed it to OFF. 
HOU Okay, while you got them, you might as well 

ask them for a 30 second fuel cell purge, 0 2 

purge there, and you can tell them we will 

watch it for the next rev. 
RKV Gemini 12, RKV 

S/C Go ahead 

RKV Okay, we are sorry we woke you up, give us a 

30 second 0 2 purge, and leave your H 2 switch 
in the OFF position now, and we will be looking 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 9:11 p.m. TAPE 260 

PAGE 3 



at it through this next rev. 
S/C Roger. 

This is Gemini Control. You heard that exchange between 
Gemini 12 and the Rose Knot tracking ship. The Gemini 12 
crew was advised that on the Automatic position for the 
H 2 switch pressure was building up in the hydrogen system 
so they were advised to cut the switch off. This they 
did, they had an 0 2 purge and Gene Kranz, the Flight Dir- 
ector advised RKV to advise the crew that we will watch 
it for the next revolution. The reactant supplies for 
the fuel cells are located in the adapter section in 
vaccum insulated containers. These containers store 
hydrogen fuel, which is the fuel for the fuel cells and 
oxygen and these are stored at super-critical pressures 
and cryogenic. Cryogenic are very extremely low temperatures. 
Heaters are employed in the system to energize and have a 
slight rise in temperature which causes the liquid to 
expand since these gases are stored in the liquid state. 
When the expansion takes place in those tanks the pressure 
rises and the gas molecules combine with the liquid molecules 
into a homogenous state. When those heaters remain on, 
naturally, as I said, the pressures continue to rise, causing 
venting of the system. We do not desire to have the hydrogen 
system vent too much. We are watching it for one more pass 
at 78 hours, 29 minutes, 51 seconds into the flight, this 
is Gemini Control. 
END OF TAPE. 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 9:50 FM CST IAJPE 26l 

PAGE 1 

This is Gemini Control 79 hours 3 minutes 31 seconds into 
the flight of Gemini 12. The Gemini 12 spacecraft has just 
left the east coast of Africa. The Coastal Sentry tracking 
ship should acquire the spacecraft at 79 hours 17 minutes 
6 seconds into the mission. To recap a little bit on our 
fuel cell problem, it was noticed a short while ago about 
25 minutes ago over the Rose Knot ship or around that time, 
when Rose Knot had acquisition, that the hydrogen tank 
pressure was high in the fuel cell system. Gene Kranz, the 
Flight Director, directed that Rose Knot inquire of the 
astronauts if the H" 2 heater was in the automatic position. 
This was done. The astronauts indicated that it was in an 
automatic position and the pressure was still high. This 
possibly could indicate a malfunction in the switch. We 
don't know at this time. There was a further exchange with 
the astronauts over the Rose Knot where it was indicated that 
they should cut the circuit breakers off on the heaters and 
Gene Kranz advises that with the pressure in both the oxygen 
and the Jiydrogen system at their present level, they are 
high enough to sustain the fuel cells through the night and 
through the mission. So it does not appear as we have an 
occasion or will have an ocassion to wake the crew again. 
We are keeping a close look on it and we will advise you 
if there is any further happening in that direction. Gene 
Kranz also advises the Rose Knot that they have a singular 



GEMINI 12 MISSION COMMENTARY, ~L\/lh/66, 9:50 PM CST TAPE 26l 

PAGE 2 

position out there, because this is the third night in a row 
where the crew was awakened prematurely. At 79 hours 5 minutes 
36 seconds into the flight of Gemini 12, this is Gemini Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, l±/lk/(£, 10:50 p.m. TAPE 262 

PAGE 1 



This Gemini Control. 80 hours, 3 minutes, 30 seconds into 
the flight of Gemini 12. Gemini 12 is just coming over the 
Western Coast of South America. RKV our Rose Knot tracking 
ship has acquired the vehicle. He reads out that the space- 
craft is GO. The sleep period was entered at 76 hours and 
32 minutes into the mission and will end at Qhxh^. All of 
this is not sleep time however, they were awaken once shortly 
after the sleep period was announced. They have gone to 
sleep though. Our doctor advises here in the Control 
Center at 79 hours approximately, the pilots entered a 
sleeping state. Heart rates are - for astronaut Lovell 50 
beats per minute, astronaut Aldrin k5 heats per minute. 
Respiration for Lovell 15 per minute, Aldrins 10 per min- 
ute. Our present apogee 1b 157.5 nautical miles, present 
periogee 142.9 nautical miles. A short recap on the situa- 
tion that happened with the fuel cells might serve a purpose. 
It was noticed in the last revolution, revolution ^9, that 
the hydrogen tank pressure fuel cell was not too high, but 
tending to go high. It was also indicated that we should 
wake the crew up by Gene Kranz, Flight Director, indicated 
we should wake the crew up and have them check that the 
heater was in the Automatic position. This was done at 
Rose Knot tracking ship, on the last pass. The heater was 
in the Automatic position so Mr. Kranz had them turn off 
the heater. The pressure in both oxygen and hydrogen 
systems are sufficient to complete this sleep period and 
also we have enough in both systems to complete the mission 
for that matter. The heater circuit breakers have been 



GEMINI 12 MISSION COMMENTARY, ll/lU/66, 10:50 p.m. TAPE 262 

PAGE 2 



and both tanks have been pressurized to that extent. We have 
30 percent roughly of hydrogen left, which is a comfortable 
quantity, and at this time there is certainly no cause for 
concern. At 80 hours, 6 minutes, 31 seconds into the mission 
this is Gemini Control. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/14/66, 11:50 PM CST 

TAPE 263, PAGE 1 

This is Gemini Control, 8l hours, three minutes, 30 seconds 
into the mission of Gemini 12. The Gemini 12 spacecraft is 
over the west Pacific Ocean at this time. The next contact 
by telemetry will be with Canton station at 8l hours, nine 
minutes, 52 seconds into the mission. The astronauts are in 
a sleep period. They are asleep. We have had no voice contact, 
therefore, with them. They have been in this period for some 
four hours, 35 minutes. Their wake-up time is scheduled to be 
84:1*5 — 84 hours, 45 minutes. The fuel cell pressures and 
quantities for the hydrogen and oxygen systems have settled 
down very satisfactorily. The pressure currently is 334 
pounds per square inch. Quantity — 30.9 per cent. Oxygen is 
820 pounds per square inch. Quantity — 19.6 per cent. This 
is very satisfactory. Gene Kranz, the flight director, indicates 
that at this time Gemini 12 is go. At 8l hours, four minutes, 
48 seconds into the flight of Gemini 12, this is Gemini Control. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY, ll/l5/66, 12:50 AM CST TAPE 26fr 

PAGE 1 

This is Gemini Control, 82 hours, three minutes, 31 seconds into 
the flight of Gemini 12. The current position of Gemini 12 is 
just passed over the west coast of Africa. The Kano tracking 
station has telemetry acquisition at this time. We're in a 
sleep period still, some four hours and 35 minutes into it. 
Wake-up time is 8U hours, 1+5 minutes. Our fuel cell hydrogen 
and oxygen pressure and quantities are much the same as the 
last report. That is, for the hydrogen — 33U psi pressure. 
Quantity — 30. 9 per cent. Oxygen -- 820 pounds per square inch. 
19.6 per cent. We have a good box score so far on this last 
flight in the Gemini program. We have accomplished rendezvous 
and docking. We have accomplished the tether exercise. We have 
accomplished two stand-up EVA's and one umbilical EVA. We have 
accomplished our experiments. We have not accomplished our U00- 
mile apogee over the United States because we did not have a 
primary propulsion system burn on the Agena. Tomorrow, hopefully, 
we will accomplish also the automatic reentry of our spacecraft 
Gemini 12. The weather in the prime -1 area is satisfactory. 
We have scattered clouds forecast at 2500 feet. The wind 350° 
or roughly out of the north at 13 knots. We have ten miles 
visibility forecast. We have four-feet waves forecast, and we 
have five to seven-foot swells forecast. That is certainly 
satisfactory weather for the prime landing area. At this time in 
the mission, all goes well with Gemini 12. This is Gemini Control 
at 82 hours, five minutes, k$ seconds into the mission. 

END OF TAPE 



GEMINI XII MISSION COMMENTARY, 11/15/66, 1:50 PM TAPE 265 

Page 1 

This is Gemini Control, 83 hours, three minutes, 31 seconds into 
the flight of Gemini 12. Our position is approaching west coast 
of South America. Acquisition by Rose Knot tracking ship should 
occur within approximately six minutes. The astronauts are still 
in a sleep period. They should be awakened in approximately one 
hour, U0 minutes from this time. We have some readouts on the 
fuel cell hydrogen and oxygen systems here. The pressure now 
stands at 327 psi — pounds per square inch. Quantity — 30. 1 
per cent. The oxygen pressure — 790 pounds per square inch. 
Quantity — 18.8 per cent. This is well within the ball park. 
The flight director, Gene Kranz, is well satisfied with these 
readings. We have an update on our flight plan — a tentative 
update on our flight plan for today. At 8k hours, U5 minutes, 
over the Rose Knot, the X-ray will be turned off and the beta 
spectrometer turned off. They will begin their eat period. At 
85 hours, 10 minutes, Canary Islands. The S-3 unit will be fixed 
on mark. They will purge fuel cells two then one. The cryogenic 
0 2 and H 2 readouts and the cryo read off. The flight plan update — 
planned landing area update. At 85 hours, ho minutes, they will 
end their eat period. At 85 hours, U5 minutes, the T-2 manual 
navigations star sightings experiment — mode A, sequence two. 
At 86 hours, 20; .minutes, they will load module four. At 86 hours, 
30 minutes at Antigua, they will have a crew status report. At 86 
hours, UO minutes, the S-6 synoptic weather experiment. At 86 hours, 



GEMINI XII MISSION COMMENTARY, 11/15/66, 1:50 PM CST TAPE 265 

PAGE 2 

50 minutes, the S-5 mode A, sequence four synoptic terrain 
photography experiment. At 87 hours, 15 minutes, we will have 
another T-2 manual navigation star sightings, mode A, sequence 
two experiment. At 87 hours, 50 minutes, we will have more 
S-6 synoptic weather photography. At 88 hours, five minutes 
over Antigua, they will pass up thruster test procedures and turn 
A pumps on. At 88 hours, 10 minutes, more S-6 synoptic weather 
photography. 88 hours, 25 minutes, more S-5 synoptic terrain 
photography, mode A, sequence four. At 88 hours, kO minutes, 
they will power up the platform of Gemini 12. 88 hours, U5 
minutes, the T-2 manual navigation star sightings experiment, 
mode B, sequence one. 88 hours, 50 minutes, at Carnarvon, purge 
the fuel cells, section one then two. Cryogenic 0 2 and H 2 readouts. 
89 hours, 20 minutes, the platform will be aligned. 89 hours, 
kO minutes , the D-10 ion sensing attitude control experiment in 
mode G. 89 hours, 55 minutes, thruster test. At 90 hours, 30 
minutes into the flight, they will stow equipment. 91 hours, 30 
minutes will be an eat period until 92 hours, 30 minutes when they 
will begin retro preparations. All looks well in the recovery area 
as far as weather goes. We have a forecast which shows waves one 
to two feet. Wind out of the north at eight knots. Visibility 
10 miles, the cloud base 2000 feet, scattered. That looks like 
ideal weater in the recovery area. At 83 hours, eight minutes, 18 
seconds into the mission of Gemini 12, this is Gemini Control. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 2:50 AM CST 

TAPE 266, PAGE 1 
Gemini Control, Houston, 8U hours, three minutes now into the 
flight of Gemini 12. Jim Lovell and Buzz Aldrin in their sleep 
period — the final stages of their sleep period are now passing 
within acquisition range of the Coastal Sentry Quebec. This is 
an interesting landmark in the flight of Gemini 12 and in the 
Gemini program in that this will be the last pass made over 
the CSQ in Project Gemini. The Gemini 12 spacecraft is now in 
its 53rd revolution at this time. Its apogee, perigee readings 
are 157.3 for apogee, lk2.9 for perigee. Meanwhile in Mission 
Control Center, Houston, we are undergoing a change of flight 
control teams. The green team of flight controllers is now 
aboard and ready to take over from the white team which will 
be relieved momentarily. At 8U hours, five minutes into the 
flight of Gemini 12, the final flight of the Gemini program, 
this is Gemini Control, Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 3:36 a.m. CST Tape 267 

Page 1 



Gemini Control Houston, 8^ hours, 50 minutes into the flight 
of Gemini 12 nov. The decision was just made in the Control Center 
to awaken the crew over the Rose Knot Victor. The RKV is talking 
to the crew now and let's pick up that conversation. 



S/C ...one telemeter is off, so we concur and we'd 

like to go over to zero. 
RKV Roger . 

HOU RKV, you might as well get his X-ray and Beta off 

and go ahead with the eat period since they are 
awake. 

RKV Okay. 12, as soon as you get a little bit awake 

here, I've got some information for you. 
S/C Okay. 

RKV Would you turn your X-ray and Beta off? 

S/C X-ray and Beta going off. 

RKV Roger. When you get over Canarys the next pass, 

at 85:06:00, they'll have a flight plan and PLA 
update for you. 

S/C Roger. Plight plan update and PLA update. 

RKV Roger, that's it. 

HOU RKV, Houston Flight. 

RKV Go Flight, RKV. 

HOU We would like to get a 30 second 0 2 purge at this 

time , both sections . 
RKV Roger . 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 3:3& a.m. CST Tape 2b7 

Page 2 



RKV 12, RKV. 

S/C Go ahead. 

RKV Roger, we'd like to get a 30 second 0^ purge at 

this time on both sections . 
S/C ' Roger, 30 second purge both sections coming up. 

RKV Roger. 
HOU RKV, Houston Flight. 

RKV Go, Flight. 

HOU You might remind them to go ahead and start eating. 

RKV Roger. Okay, 12, when you -- at your convenience, 

you can start your eat period and I think it's 
planned between now and 80-- 85:25:00. 

S/C Roger. 

RKV And you are about one minute to our LOS, and I 

just want to say Adios, see you at the Apollo 
program. 

S/C Roger, thank you very much. You've "been a help 

all through the flight . 
RKV Agena TM off. 

Flight, we didn't get the complete purges. We 

didn't copy them in real time. 
HOU Okay. 

RKV We had to get the TM off. We have LOS both vehicles. 

Both vehicles go. 



GEMINI 12 MISSION COMMENTARY , 11/15/66, 3:36 a.m. CST Tape 267 

Page 3 



Gemini Control Houston. We've just had loss of signal with 
the Rose Knot Victor. As you just heard, the crew was awakened 
over the Rose Knot Victor. They are now performing a fuel cell 
purge, and as was indicated last night, or yesterday evening, 
in the commentary, the final night of sleep for a Gemini crew 
in space was interrupted — interrupted by a buildup in hydrogen 
tank pressure. To alleviate this problem, the crew was awakened 
and pulled their circuit breakers which in turn stabilized this 
pressure. The pressure reading had gotten up to 337 psi. There 
was some concern that a buildup beyond 350 psi might cause the 
hydrogen to vent, which we did not want to happen. The hydrogen 
tank pressure is — has since stabilized. At our last reading 
over the Rose Knot Victor indicated 317 psi, so we are in good 
shape. In Mission Control, Cap Com Bill Anders is now aboard. 
Bill Anders, who has talked to the crew through the three EVA's 
of this mission, again is wearing cowboy boots to work. This 
has become quite a tradition here in the Control Center. Pete 
Conrad, the other Cap Com, has traditionally worn his billed 
cap, which he had aboard the recovery ship following Gemini 11. 
Our next station to acquire will be Canary. Acquisition time 
is 85:05:26. This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 3:52 a.m. CST Tape 268 

Page 1 



Gemini Control Houston, 85 hours, 5 minutes , .into the flight 

of Gemini 12 at this time. We are approaching acquisition with 

the 

Canary tracking station. We are in the beginning of/5Uth revolution. 
We expect contact with the Gemini 12 crew momentarily, and we 
are standing by for that contact. 



HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. 

HOU Okay, you have any questions? 

CYI Negative. 

HOU Okay, just go ahead in real time on this flight 

plan update until you get to 85:^5, so he doesn't 
have to copy all that jazz. In other words, do 
the fuel cell purge, the S-3. Copy? 

CYI Copy. 

Ii Gemini 12, Canary Cap Com. 

S/C Go ahead, Canarys. 

CYI Good morning. 

S/C How are you?? 

CYI Fine thank you and you? 

S/C Well, we had another fuel cell stack went out, 

that's all. 

CYI Roger. We've got a special fuel cell purge we 

want to pull here. We'd like to do a 30 second 
purge on section 2. 

S/C A 30 second 0 2 on section 2, roger. We just did 

a 30 second 0 ? on both sections. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 3:52 a.m. CST Tape 268 

Page 2 



CYI Roger, they want another one. 

S/C Roger, another one on section 2. 

CYI And when you finish that one, then we'll do 

30 seconds more on section one Og purge. 
S/C Two 30 seconds coming up, on section 2. 

HOU Canary, from Flight. 

CYI Go ahead, flight. 

HOU Can one copy while one purges? 

CYI Roger. I thought you wanted to step through 

this purge, though? 
HOU Yep. 
CYI Okay. 
HOU We've got a lot to do. 

S/C Section 2. You ready for one now? 

CYI I've got a lot of stuff for you to copy, if you 

can copy while we're purging here. 
S/C Go ahead. 

CYI Okay, I've got a notal update. Time 83:28:29, rev 

53. 25.8 degrees west, right Ascension, 10 hours, 
07 minutes. 

S/C Okay. 

CYI Okay, we'd like a 12 second H 2 purge on section 2, 

then 12 seconds on section one. 
S/C Twelve seconds on 2, then 12 on 1. 

CYI Roger. Okay, I've got some flight plan updates here 

for. you. 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 3:52 a.m. CST Tape 268 

Page 3 

S/C Okay. 

CYI 85:^5; T-2, load A, sequence 02. 86:20, load module k. 

86:29 at Antigua, crew status report. Okay, now on 
the purge, we'd like a 90 second 0^ purge on section 2 
followed by a 90 second 0 2 purge on section 1. 
Gemini 12, Canarys. 



S/C Go ahead. 

CYI Okay, we'd like to fix unit 2 of the S-3 experiment 

on your mark. Roger, stand by for the mark. 

S/C Roger, you ready? ' . 

Ready. 

S/C Fix the unit 2, 3, 2, 1, Mark. 

. . . (garbled) 

CYI Okay, we've got that. Okay, I'll continue the 



flight plan update here. At 86: Mi, S-6, sequence 
01, north of track. 86:54, S-5, mode A, sequence 
Ok. 87:15, T-2, mode A, sequence 2. 87:57, S-6, 
sequence 08, south of track. 88:15, S-6, sequence 
07, strip photos, north of track. 88:30, S-5, 
load A, sequence Ok. At 88: kO, powerup platform. 
At 88:^5, T-2, load B, sequence 1. At 88:51, 
at Carnarvon, purge fuel cells, section 1, then 2. 
At 89:20, align the platform. At 89: kO, D-10, 
mode G; we've got about 30 seconds to LOS, so I'll 
stop here. We'll pick up the rest of it later. 
HOU Kano go remote. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 3:52 a.m. CST Tape 268 

Page k 



S/C Roger, I copied. 

KNO Kano is remote and we have acquisition. 

HOU Gemini 12, Houston, Cap Com through Kano, over. 

S/C Roger, Houston through Kano. 

HOU Good morning. I'd like to give you this PLA 

block update, now, Jim. 

S/C All right, stand by. 

HOU Gemini 12, Houston Cap Com, over. 

S/C Go ahead. 

HOU Roger, you ready to copy a PLA block? 

S/C Righto. 

Send it up. 

HOU Roger. Area 56, Alpha, Charlie. 87jl<-9:32, 



20 + 3U, 26 + 19, 57-1 Alpha;. 89: 13: 48, 
20 + 36, 26 + 2k, 58-1 Bravo. 30:49:2**, 
20 + 36, 26 + 19; correction to 58 - 1 Bravo. 
That's 90:U9;2U. 



S/C Houston, number GETRC? 

HOU That's GETRC for 58 - 1 Bravo. We have 30 seconds 

to LOS. We'll pick up the rest later, Gemini 12. 

S/C Roger . 

HOU And, were you able to complete your purge? 

S/C Roger, purge is complete. 

HOU 30 seconds to LOS. 

KNO Kano has LOS. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 3:52 a.m. CST Tape 268 

Page 5 

Gemini Control Houston. We've had loss of signal over Kano. 
We are out of range of Kano now. During this pass, we've passed 
both over the Canary Island station and went immediately into 
Kano where Cap Com Bill Anders talked — remoted through that 
African station. The S-3 referred to in the pass over Canary 
is the S-3 experiment. That's the frog egg growth experiment. 
On the time hack or mark you heard given by the Canary Cap Com, 
the crew activated a lever or actuated a lever for the second 
frog egg unit. The first unit was activated midway through the 
Gemini 12 mission. This is the second of two units. We'll be 
a long time now before we have our next station contact. Next 
station contact as a matter of fact is over Antigua and this is 
at 86: hours, 29 minutes, and 1 second GET. Over an hour from 
this time. This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COM4ENTARY, 11/15/66, U:50 a.m. CST Tape 269 

Page 1 



Gemini Control Houston, 86 hours, 3 minutes into the flight 
of Gemini 12 at this time. The Gemini 12 spacecraft with its 
crew of Jim Lovell and Buzz Aldrin is now passing over the south 
Pacific well out of range of tracking stations at Canton and 
Hawaii, and during this quiet pass, we have preliminary times 
for the retro sequence, which is scheduled for early this 
afternoon. The GET for retro that we are looking at at the 
present time, is 9k hours, 1 second. Time for retro adapter 
separation would be time of retro plus 4-5 seconds. Time for 
400,000, UOO K, would he retro plus 20 minutes, 10 seconds. 
Time to "begin blackout, retro plus 22 minutes, 21 seconds, 
time for end of blackout, retro plus 27 minutes, 19 seconds. 
Time for 50 K, drogue chute deploy, retro plus 29 minutes, 7 
seconds. Time for main chute deploy, retro plus 30 minutes, 
1+9 seconds. Time for splash, retro plus 35 minutes, 10 
seconds. Weather advises that weather conditions in the 
prime recovery area in the western Atlantic, this is recovery 
area 60-1, are satisfactory for splashdown this afternoon. 
We forecast partly cloudy skies with very isolated showers 
in the vicinity of the aiming point area, with winds at — 
to be northerly at 15 knots and wave heights 3 to k feet. 
Our predicted weather in the prime recovery area appears 
almost identical to that which we had for the Gemini 11 splash. 
With the exception of our forecast wind direction. At 86 hours, 
6 minutes, into the flight of Gemini 12, at this time, this is 
Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:16 A. M. CST 

Tape 270, Page 1 



Gemini Control Houston, 86 hours, 29 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is approaching 
acquisition at Antigua. We're standing by for this pass. We 
expect a crew status report to take place during this pass. 
Standing by this is Gemini Control. 



S/C Roger, Houston. 

HOU Roger, if you have module k loaded you can 

turn your computer off, please. 

S/c It's not loaded yet. Houston, we want to 

check a procedure with you. 

HOU Go. Go ahead. Gemini 12, Houston. Go ahead. 

S/C Roger, we've run out of water and we have put 



the squeeze bulb .... down below and opened up 
the valve next to the . . . and we just want to 
check that our H 2 0 switch should go to the off 
position. Is that correct? We don't have that 
in the procedures book. 

HOU We'll check it out for you. We'd like to give 

you a flight plan change in update if you're 
ready to copy. 

S/C Go ahead. 

HOU Roger, the item we gave you at 88:15 and 88:30 

we'd like to have you delete them and substitute 
at 88:10 thruster test. Copy? 

HOU Do y° u c °Py Gemini 12? 



GEMINI 12 MISSION COMMENTARY , H/15/66, 5:16 A. M. CST 

Tape 270, Page 2 



\ 



S/C Houston, did you say at 88:10 we'd have a 

thruster check? 

HOU That's affirmative. I'll tell you about it 

later. Delete the items at 88:15 and 30. We're 
substituting them, at 89:50 do the S-6, at 90:06 
do the S-5- Understand? 

S/C Roger, stay in sequence? 

HOU Okay, was the same S-6 and S-5 at the times we 

deleted. 
S/C Roger. 

HOU Okay, 90:30 stow equipment; 91:30 eat period; 

92:05 Carnarvon, preliminary reentry update; 

92:30 retro prep; 92:50 U. S. pass, update; 9^:00 

retrof ire . Copy? 
S/C Roger, was retrofire 9U:00? 

HOU That's rough. We'd like you to give us a 30- second 

0 2 purge on each section. 

S/C Roger, 30- second 0^ purge in each section. 

HOU And could you give us a crew status report? 

S/C Pilot slept medium to good, five and a half hours; 

Command Pilot about four hours, fair; water gun 
count is 2215; Pilot finishing breakfast and 
Command Pilot has not had anything yet.... water. 

HOU Roger, after you have module k loaded we'd like to 

have you turn the computer off. 



\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:l6 A. M. CST \ 

Tape 270, Page 3 



S/C Right. 

HOU And then turn your A pumps on. Copy? 

Gemini 12, do you copy? Computer off after 
module h loaded and then A pumps on. 

S/C Roger, computer off and then A pumps on. 

HOU Roger. I'd like to talk to you about this 



thruster check now. The configuration we would 
like to have you in is rate gyros on, FDI's rate 
scale low, attitude control direct. And using 
your CAMS thruster circuit breakers we'd like to 
have you fire each attitude thruster and fore aft 
maneuver thruster independently in order to establish 
a rate of approximately 1 degree per second on the 
FDI's. If you can't get these rates let the thruster 
fire for 25 seconds. We'd like for you to record the 
GET of the test for postf light correlation. Under- 
stand? Gemini 12, do you copy the thruster fire 
check? 

S/C I'm trying to write it down. 

HOU Don't write it down. We'd just like to have you add 

these - all the circuit breakers off and bring one 
of them on at a time and fire that thruster for 
either one degree per second or 25 seconds, which- 
ever comes first. 

S/C Roger, rate gyros on, FDI's rate scale low, attitude 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:l6 A. M. CST 

Tape 270, Page U 

control direct, we use OAMS thruster circuit breakers 
to fire each attitude and maneuver thrusters separately 
to get 1 degree per second or 25 seconds . 

HOU Roger, we're only interested in the fore and aft 

maneuver thrusters, not the radio maneuver thrusters. 

S/c Only fore and aft maneuver thrusters . 

HOU Roger, and if this thruster check looks okay we'd 

like to do D-10 Mode G at 89: kO without the computer 
by having you fire one second in each lateral direc- 
tion and then one second aft to take out the forward 
component. Copy? Gemini 12, did you copy? That's 
negative on the A pumps on. 

S/C Okay, if you guys get together. Negative on the 

A pumps on, huh? 

HOU Roger, let us change our mind. We'll give you that 

word on the water over Canary. Do you copy that 
about the D-10 Mode George? 

ANT LOS Antigua. 

Gemini Control Houston, 86 hours, 37 minutes into the flight of 
Gemini 1? it this time. The thruster check that the Gemini 12 crew 
will be going through is designed primarily, the philosophy behind it, 
is r.o gain data for post-mission analyses. As you will recall, we've 
had thrusters 2, k and 8 go out earlier in the mission of Gemini 12. 
Our next station to acquire will be Canary and that's 86 hours, 39 minutes. 
kl seconds into the mission. This is Gemini Control Houston. 



I 

\ 
\ 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:25 a.m. CST Tape 271 

Page 1 

Gemini Control Houston, 86 hours, 39 minutes now into the 
flight of Gemini 12. We're coming within range of Canary tracking 
station at this time. We expect conversation between the Canary 
Cap Com and the Gemini 12 crew to be coming in very shortly and 
we're standing by for any conversation which might transpire. 



nOU ... the four stacks are looking pretty good. 

The purges evidently helped over your site 

last time. 
CYI Okay. 
CYI Flight, Canarys. 

HOU Go ahead. 

CYI Okay, those Delta P lights are out. I don't know 

whether he's got the circuit breaker pulled or 
what. Want to find out about it? 

HOU Yes, you might ask him. 

CYI Gemini 12, Canary Cap Com. 

S/C Go ahead, Canarys. 

CYI Okay, we're going to try to get the water answer 

to you over our site here. Your four stacks are 
looking real good in the fuel cells. Evidently 



that purge we did last rev helped them out a little 

bit. And do you have the Delta P circuit breaker 

open at this time? 
S/C That's affirmative. We just finished checking 

them out. 
CYI Okay. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:25 a.m. CST Tape 271 

Page 2 



S/C (garbled) 

CYI Say again? 12, I didn't copy. 

S/C I pah it on for just a minute so you can ' see 

that the Delta P lights are still on. 
CYI Rog. We got it. 

HOU We don't have any preference on that Cap Com. 

If he wants to leave it open. 
CYI He opened it back up again. 

Flight, Canarys. 
HOU Go ahead. 

CYI Okay, we're back to sending the TX's again? 

HOU Affirmative . 

CYI Okay. 12, Canarys, sending you a TX. 

Flight , Canarys . 
HOU Go ahead. 

CYI How far did we get on that PLA update over Kano 

last time? You want to finish it off now? 

HOU We got down to 59 -1 Bravo. 

CYI Okay, do you want to finish it off now? 

HOU If it's convenient for them, why don't you go 

ahead and finish it off? 

CYI Roger. 

HOU If not, we can pick it up next pass. 

CYI 12, Canarys. 

S/C Go ahead. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:25 a.m. CST Tape 271 

Page 3 



CYI If it's convenient for you at this time, we can 

finish off this PIA update. 
S/c It's not convenient at this time, Canarys. 

CYI Okay, we'll pick it up next rev. 

HOU Canary Cap Com, Houston Flight. 

CYI Go ahead, Flight. 

HOU Okay, we are a little confused about his query 

here. Trying to figure out what we copied, hut 
we think his question was should the H 2 valve 
be to off and it should be HgO valve to pressure 
off. 

CYI H 2 0 valve to., • 

HOU Pressure off. 

CYI Pressure off. 

That's where you want it, right? 
HOU Right . 

Then you pump up the bulb. Better get that to 

him. 

CYI Rog. Gemini 12, Canarys. 

S/C Go ahead. 

CYI Okay, in regard to your query, they want the 

HgO valve to the pressure off position and 
then you pump up the bulb. 

S/C Roger. I thought so, I just wanted to check. 

CYI Roger. 

HOU What did he say, Canary? 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 5:25 a.m. CST Tape 271 

Page k 

CYI He said that's what: he thought, he just wanted 

to check. 
HOU Okay. 

CYI About a minute to LOS, standing by. 

We've had Agena LOS. LOS Gemini. Both vehicles 

are go. 
HOU Roger. 

Gemini Control Houston, 86 hours, U9 minutes into the flight 
of Gemini 12. We have just passed out of range with Canary. The 
statement regarding the four remaining stacks which was passed up 
to the crew refers of course to the fuel cell. We have four good 
stacks aboard the Gemini 12 spacecraft at this time. These four 
stacks are holding good. Stack 1-C was turned off when the crew 
was awakened this morning. Awakened over the RKV, and the purges 
which — fuel cell purges which have taken place have, proven suc- 
cessful thus far. At 86 hours, 50 minutes into the flight of 
Gemini 12, this is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 6:OU A. M. CST 

Tape 272, Page 1 

Gemini Control Houston, 67 hours, 17 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft with Command Pilot 
Jim Lovell and Pilot Buzz Aldrin is approaching acquisition over 
Carnarvon now and the backside of its 55th revolution in this 
mission. Carnarvon will acquire the spacecraft shortly and we're 
standing by for conversation. 



CRO And telemetry solid. 

CRO Carnarvon has TM solid Gemini. 

HOU Roger. 

CRO All systems are go on Gemini. 

HOU Roger . 

CRO Gemini 12, Carnarvon. 

S/C Go ahead. 

CRO Okay, We know you're in the middle of T-2 and all 

that, but as soon as possible we'd like to get a 
30-second purge on each section in the 0^, sec- 
tion 1 and then section 2. 

HOU After they finish T-2. 

S/C Is it required during the day pass, we'll be all 

night at this? 

HOU Negative, after they get out of ... (interrupted) 

CRO All right, after you're through. 

S/C Okay. 

CRO Okay, we'd like to know how you're doing out of 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 6:04 A. M. CST 

Tape 272, Page 2 



water? 

S/c Well, you can scrub the rehydratables . We can 

get a little water out of there but it goes down 
very slowly so you can't put any water in the bags 
so it's strictly dry food and drinking water. 

CRO Okay. 

CRO 12, for your information, your T-2 data looks real 

good. 

S/C Right. 

(PAUSE) 

CRO Carnarvon has one minute to LOS, we'll be standing 

by. 

S/C Roger. 

CRO Carnarvon has LOS Agena. 

HOU Roger. 

CRO LOS Gemini. All systems go at LOS. 

Gemini Control Houston, 87 hours, 23 minutes now into the flight 
of Gemini 12. We've just gone out of contact with the Gemini 12 space- 
craft at Carnarvon tracking. The next station to acquire will be 
Grand Turk at 88 hours, two minutes into the flight of Gemini 12. 
This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 6:31 a.m. CST Tape 273 

Page 1 



Gemini Control Houston, 87 hours, kk minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is on its 55th 
revolution passing over the South Pacific at this time. And 
during this quiet pass over the South Pacific out of range of 
tracking stations to the north, we have a bit on our — a 
bit of insight on our difficulty with the water gun aboard the 
Gemini 12 spacecraft. Our preliminary thoughts in the Mission 
Control Center are that Gemini 12 does have sufficient water 
aboard. An -early insight here is that we are not receiving 
sufficient pressure from the system to push the water out of 
the gun. We had a comparable situation in Gemini 9 when the 
water gun played out shortly before reentry. In that instance, 
however, there was a mechanical problem with the gun itself. 
From the description given by Jim Lovell to the ground, we 
don't believe this is the case in Gemini 12, however. Our 
next station to acquire will be over the Eastern Test Range. 
And this will be at 88 hours, 2 minutes into the flight of 
Gemini 12. This is Gemini Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 6:U8 am CST 

TAPE 2jh, 
PAGE 1 

Gemini Control, we're acquiring over the Eastern Test Range 
at this time. 

SC Well he can-. ' - get water out of it, 

it just dribbles out very slow pressure, 
very small pressure at this low rate. 

HOU Okay, I think there is more to the manual 

shut off valve that is shown on the 
schematic on the GOH. We kind of feel down 
here that this shutoff valve ought to be 
off when you are pumping. This acts as a 
check valve which does not allow the 02 to 
bleed back out as it normally would in the 
on position. The on position is used in 
measuring blood pressure when you're letting 
the pressure out of the cup. So try it with 
the valve off. 

SC Are you talking about the check valve in the 

blood pressure cup itself? 
HOU That is right. We think it's a little sliding 

sleeve, is that correct? 
SC A sliding sleeve, I thoughtJi had her. off, 

I'll check it again. 
HOU Okay, look if that doesn't work, then pump it 

up and remove the bulb and I think that will 

let the check valve operate. 

ANT AOS Antigua 

HOU Did you copy that about removing the bulb? 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 6:U8 am CST 

TAPE 27k, 
PAGE 2 



SC Yes, okay, we'll pump it up and remove the 

bulb. 

HOU You should be able to pump as hard as you can 

stand on that to build up the pressure. It s 
should check if you have that shutoff valve 
on. Correction off. ■ 

SC Right, the 02 water valve - the H20 valve 

is in the off position now and we're pumping 
up the bulb . . 

HOU Okay. I'd like to talk to you about your 

D-10 Mode George at 89:U0. Did you copy the 
change that we had into your procedure on 
that? 

SC Wait a minute let me check. 

HOU Okay, we were talking to you at about LOS on 

the last stateside pass. 
SC I have - have D-10 Mode G that is all I have 

at 89:^0. 

HOU Okay, in your procedures it calls for you to 

bring up the computer and use address 80. 
Rather then bring the computer up we'd like 
for you to leave it off and burn each radial 
thruster for 1 second. Then burn aft for 1 
second to take out the resultant forward delta 
V. Understand? 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 1^, 1966, 6:1+8 am CST 

TATE 275, 
PAGE 3 



SC Leave the computer off, burn each radial 

for 1 second then burn aft for 1 second 

to take out the delta V. 
HOU Roger, the radials will give you a little 

forward, we want to take that out with the 

aft thruster. 

Okay. 

SC Roger . 

HOU Okay, you can bring your A pumps on the line 

now. We're all agreed to it. 

Were you able to get the 30-second 02 purge 

in between Carnarvon and the states? 
SC Roger . 

HOU Very good. 

Gemini 12, confirm that you understand that 

you are suppose to burn - - aft with the for-. 

ward thrusters on this D-10. 
SC Roger, we're to take out the residuals at the 

lateral they give us. 
HOU Very good. Would you give us another 30-second 

02 purge? Section 2 then section 1. 
SC Another 30-secbnds 02 purge, section 2 then 

section 1. 

Roger I have my right hand marl here, he is doing 
the pumping right now, be with you in a second 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966 , 6:K8 am CST 

TAPE 27k, 
PAKE h 



HOU Okay. I'd like to make a change to your 

post retro jet checklist, if you can get it 
out. 

SC Okay, just 

HOU There is no rush on this, either now or any- 

time we get your next.... 
SC Section 2 purge. 

HOU That is affirm. 



Gemini 12, Houston. When you start to power 
up the platform at 88:UO, if you can't maintain 
a 22 volts minimum on the main bus, we want 
you to go ahead and power down again. 

SC Understand, 22 volts minimum on the main bus. 

HOU Roger. We'll - later on we'll have you bring 

the main batteries on the line before you bring 
your computer up for reentry. 

SC Okay. 

Purge complete. 

HOU Roger, complete. 

Are we keeping you busy this morning? 

SC L Yes, you are doing pretty well. 

Everytime I try to eat something, I'm either 
getting ready to purge fuel cells, taking updates, 
write down something .... 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 6:U8 am CST 

TAPE 27k, 
PAGE 5 

HOU What are you doing with your left hand? 

We want you to eat so if you are getting into 
a bind, just drop one of the S-5 or S-6 and 
go ahead and get a bite. 

SC Yes, they are on borrowed time, we have just 

about over 150 of those magazines now, 

HOU Roger, understand. 

Gemini 12, we show your B pumps are on, you 
want to just go to just A pumps. 

SC Understand, A pumps in primary and secondary. 

HOU Roger, A pumps only. 

SC Houston, 12. 

HOU Go ahead 12. 

SC Roger, we're following your updates now almost 

exclusively. If we miss anything in the flight 
plan it is because we don't have them both 
open out at the same time. 

HOU Roger . 

Roger, we've given you everything in the update 
Gemini 12. The only thing you might need the 
other flight plan for is for your acq time. 

SC Roger. 

HOU We got about a minute and a half to LOS. Have 

you got that post retro jet checklist out, we 
can get that? 



GEMINI 12 MISSIONXOMMENTARY, NOVEMBER 15, 19&6, 6:^8 am CST 

TAPE 21k, 
PAGE 6 

SC Okay, go ahead. 

HOU Roger. This is pre retro checklist opposite 
the page that says nominal 92 ^5 kl, 
we have Agena power circuit breaker 



END OF TAPE 



\ 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 6:57 A. M. CST 

Tape 275, Page 1 

HOU We have Agena power circuit breaker open. 

That's in about the middle of the page. 
S/C retro jet now? 

HOU Roger, this is in the - right after the page 

that gives you all the MDIU reentry quantities. 
You got that? 

S/C Okay, that's preretro jet. 

HOU Rog. Opposite where it says emergency RCS on. 

S/C Okay, I copy. Go ahead. 

HOU Agena power circuit breaker, it says open; we 

want it closed for the S-3. We have checked this 
out and that will be okay for landing. 

S/C Understand leave the Agena power circuit breaker 

closed. That comes before G & Control circuit 

breakers. You want that Is that right? 

Uh, disregard. 

HOU Just the Agena power, the Agena power circuit 

breaker closed. 
S/C Roger, understand. 

HOU You're at LOS. 

Gemini Control Houston. We're standing by for Canary acquisition 
in two minutes. 

ANT LOS Antigua. 

(PAUSE) 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 6:57 A. M. CST 

Tape 275, Page 2 



CYI Canaries have acq aid contact Agena. 

HOU Roger. 

CYI TM solid, go. 

CYI Acq aid contact Gemini. 

HOU Roger. 

CYI TM solid Gemini, Gemini is go. 

HOU Roger. 

CYI Gemini 12, Canary Cap Com. We've nothing for 

you at this time. I'll be standing by, sending 
you a TX. 

S/C Canary, 12. Roger, thank you. 

S/C I'm sure glad. I just had a call to nature. 

CYI Say again, 12. 

S/C I said I'm glad you don't have anything for us. 

I just have a call to nature. 
CYI Roger . 

HOU Canary Cap Com, Houston Flight. I didn't quite 

copy that. What did he say? 
CYI He said he has a call to nature right now. 

HOU I copy that. 

CYI Roger. 

CYI He was glad we had nothing for him. 

HOU Nothing yet. 

(PAUSE) 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 6:57 A. M. CST 

Tape 275, Page 3 



HOU Canary Cap Com, Houston night. 

CYI Go ahead Flight. 

HOU We need another 30 second purge, 1 then 2, 

0 2 only. 

CYI Roger. Section 1 then 2, right? 

HOU Affirm. 

CYI Gemini 12, Canary. 

S/C Go. 

CYI Okay, we need another 0 2 purge only, section 1 

then 2. 30 seconds each section. 
S/C Roger, I copy. 

HOU Canary Cap Com, Houston Flight. Send us another 

Gemini main, please. 
CYI Roger. 

CYI He's finished section 1 and he's on section 2. 

HOU Roger. Send us a main when he completes, two. 

will you? 
CYI Roger. 
S/C Purge complete. 

CYI Roger, copy. 

Gemini Control Houston, we're continuing to stand by during our 
pass over Canary. No conversation at this tine. 
CYI Did you get all our summaries, Flight? 

HOU As far as I know, Canaries, yes. 

CYI Okay, we're sending you three Gemini mains now 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 6:57 A. M. CST 

Tape 275, Page k 



and we did notice one thing here, that after 

the purge, his main bus voltage dropped two tenths. 

HOU Dropped two tenths after the purge? 

CYI And also his load dropped about six tenths. 

HOU Rog. 

(PAUSE) 

HOU Canary Cap Com, Houston Plight. 

CYI Go ahead Flight. 

HOU Send us an LOS main Gemini, Please. 

CYI Roger. 

CYI We've had LOS on the Agena. 

CYI Gemini 12, one minute to LOS. 

S/C Roger pressure check. 

CYI Roger. 

HOU Kano go remote, Canary go local. 

KNO Kano's remote. 

HOU Gemini 12, Houston Cap Com through Kano. Standing by. 

S/C garbled 

HOU Reading you garbled, Gemini 12. Standing by. 

S/C Roger, we are through with the thruster check. 

HOU Understand you are through the thruster check. 

S/C That's correct. 

HOU Roger . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 7:12 a.m. CST Tape 276 

Page 1 



Gemini Control Houston. We have just had loss of signal over 
Kano. Almost no contact with the crew during this pass. Conver- 
sation with the crew during this pass. We are on the 56th revolu- 
tion of the mission of Gemini 12. Our next station to contact the 
Gemini 12 will be Carnarvon. This is scheduled at 88 hours, 50 
minutes, 48 seconds into the flight of Gemini 12. This is Gemini 
Control Houston. 



END OF TAPE 



GEMINI 12 MISSDCT COMMENTARY, 11/15/66, 7:36 a.m. CST Tape 277 

Page 1 



Gemini Control Houston, 88 hours, 50 minutes now into the 
flight of Gemini 12. The Gemini 12 spacecraft is presently coining 
within range of Carnarvon, and we are standing by — standing by 
now for any conversation between the Carnarvon Cap Com and space- 
craft Gemini 12. 



CRO Carnarvon has acq A contact, the Agena. 

HOU Roger . 

CRO Carnarvon has telemetry solid, Gemini. 

HOU Roger. How is your main buss? 

CRO Twenty- two volts on the meters. We're checking 
closer. 

HOU How abou£ load? 

CRO We've got intermittent TM right now. 

HOU Okay. 

CRO How about 35 or 36? 

HOU Did you check that 22, is that right? 

CRO No, we haven't got valid data on the cam right 

now, Flight. 

HOU Okay, let me know. 

CRO 21.9- 

36.1 amps total current. 

HOU Say again. 

CRO 36.1 amps total current. 

HOU Roger. 

CRO 11.1 on 2 and 25.0 on 1. 

HOU Say again, 1. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 7:36 a.m. CBf Tape 277 

Page 2 



CRO 25.D). 
HOU Copied. 

CRO Gemini 12, this is Carnarvon. Guess what we've 

got for you to do. 
S/C Not another fuel cell purge? 

CRO Make that 2 and then 1, 0 g purge. 

S/C 30 seconds? 

CRO That's affirmative. 

S/C You want them now? 

CRO As soon as possible, right. 

S/C I'm right in the middle of a helmet T-2. Do 

you want us to hold the T-2? 
HOU Stand-by. 

Carnarvon, from Flight. 
CRO Go ahead. 

HOU Forget the T-2. 

CRO Roger. Skip that T-2. 

S/C Skip the T-2, huh? 

CRO That's affirmative. 

S/C Okay. 

30 seconds 2, then 1, coming up. 
CRO Roger . 

Okay, I'm going to send you a TX. 
S/C I think we can get this T-2 anyway. We'll purge 

and by the time I get in position here we'll get 

it. By the way, we checked the thrusters. 



\ 

GEMINI 12 MISSION COMMENTARY, ll/l5/66, 7:36 a.m. CST Tape 277 
/ Page 3 

Four and eight are dead completely. Two takes 
12 seconds to build up to one degree and 7 
takes 17 seconds I believe. All the rest of 
them check out. 

CEO Okay. Thank you. 

C-band track at Carnarvon. 

HOU Carnarvon, from Flight. 

$R0 Go ahead. ', *~ r o - 

HOU Was that 7 seconds on number 2? Is that what 

you copied? 

CRO Twelve. 12 seconds. 

HOU Twelve, copied. How is your main buss voltage now 

Carnarvon? 

CRO The same. We're keeping a close eye on it. 

HOU Okay. 

S/C ] Purge is complete. 

CRO Roger. 

No change on;. the voltage. 
HOU Carnarvon, from Flight. 

CRO Go ahead. 

HOU Is he doing any better on his water? 

CRO Okay, I'll query him. 

Have you made any progress on that water pumping 

process? 

S/C Yeah, we're getting a little more water out now, 

I believe. I think it was the JtoAdsfcr. She must 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 7:36 a.m. CST Tape 277 

Page U 



CRO Okay. 

HOU Carnarvon, from Flight. 

CRO Go ahead. 

HOU Stand by. Carnarvon, from Flight. 

CRO Go ahead. 

HOU Okay, you might tell him if he can get anything 

else out of T-2, to go ahead. We don't think 
we have anything else for him. 

CRO Okay. 

HOU And standby.ia minute Carnarvon. 

CRO Right . 

HOU Carnarvon from Flight. 

CRO Go ahead. 

HOU Okay, also, or first Bill, tell, Jim, tell him 

that we are running 21. 9. Is that what you still 
have? 

CRO Affirmative. 

HOU On the main buss . . 

CRO Make that 21.8. 

HOU Okay, if it's started to sag at all, to power down. 

CRO Okay. 

HOU And we'll talk to him at the States. 

CRO Okay. 12, Carnarvon. 

S/C Go ahead. 

CRO Okay. Number 1, your main buss volt is reading 

about 21.8. Keep;>a close eye on it, and if it 



s 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 7:36 a.m. CST Tape 277 

Page 5 

goes down any more, power down. 
S/C Okay, we have fast heat on now for the platform. 

Watch it for us. We have all the lights/bright 

now. Let us know when you get LOS. 
CRO Okay. And also, if you can get anything else on 

T-2, you can go ahead on that. 
S/C We're doing that right now. That's why the lights 

are out. 
CRO Okay. 

One minute to LOS at Carnarvon. 

Okay, 12, this is Carnarvon. We're about to loose 
you. There's been no change on your main buss 
voltage. 21.8. 

S/C We'll hold it right there, then, till we get to 

the next Acquisition. 
CRO Okay. 

HOU Hold it till he gets what? 

CRO Till next acquisition. We've had LOS both vehicles. 

Gemini Control Houston. We picked up the crew over Carnarvon 
while they were performing the T-2 experiment. This is the handheld 
sextant experiment with the helmet and gloves on. And the visor 
down. You will recall that this experiment is performed two ways; 



GEMINI 12 MISSION COMMENTARY, H/15/66, 7:36 a.m. CST Tape 277 

Page 6 



both with helmet and gloves on and with helmet gloves off. The 
fuel cell purge by the way that was discussed here was a flight 
plan scheduled item unlike some of the fuel cell purges on our 
previous passes. 



END OF TAPE 



GEMINI 12, MISSION COMMENTARY, NOVEMBER 15, I966, 7;l+6 am CST 

TAPE 278, 
PAGE 1 



some of the fuel cell purges on our previous passes. 

Also Jim Lovell advised the Carnarvon Cap Com that their 
problem with the water gun was alleviated somewhat. 
Apparently it was a bladder that had slipped. Our next 
station to acquire will be Texas and this is at 89 hours 
33 minutes, 26 seconds into the flight of Gemini 12. 
This is Gemini Control Houston. 



END OF TAPE 



\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:20 A. M. CST 

Tape 279, Page 1 

Gemini Control Houston at 89 hours, 33 minutes into the 
flight of Gemini 12. The Gemini 12 spacecraft is coming up on 
the final phases of its 56th revolution and at this time is 
approaching acquisition with the Texas station. We'll stand by 
for any conversation. 



HOU Texas go remote. 

TEX Texas remote. 

HOU Gemini 12, Houston Cap Com, over. 

S/C This is 12, go ahead Houston. 

HOU Roger, Jim. We see the main bus voltage is 

down to 21.6. We'd like to have you take your 
platform off the line. We'll bring it back on 
at 91 hours. 

S/C Okay, platform going off the line. 

HOU We'd like to have you do the best you can on 

Mode G without a platform. 
S/C Okay, we just had it aligned nicely too. 

HOU Sorry about that. 

HOU Gemini 12, Houston. When we bring the platform 

back up at 91 hours, if you have any trouble 
aligning with CAMS we'll activate the RCS and 
align on one ring. 

S/C No, we're not having any problems. We can do with 
Did you get my report I purged at Carnarvon? 

HOU Roger. 



\ 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:20 A. M. CST 

Tape 279, Page 2 



S/C Okay, it seems like so many of them failed that 

they're counteracting each other or complementing 

each other, I should say. 
HOU Understand your ability to align now is somewhat 

improved and you think you'll "be able to do it 

on the QAMS. Is that correct? 
S/C Yeh, so far we're able to align on the OAMS using 

the maneuver and the attitude control thrusters. 
HOU Roger, well, it was our plan to give you a good 

try on the OAMS and go to the RCS if that didn't 

work. 

S/C Roger. 

HOU • Gemini 12, Houston. Will you go back to both 

B pumps on - both A pumps off. 
S/C Roger. 

HOU Main bus voltage is up to 25. Looks good. 

S/C Roger, we're back in both B pumps. 

HOU Roger. 

HOU Gemini 12, Houston Cap Com. Would you believe 

two 30 second 0^ purges, section 1 then section 2, 
prior to leaving the U. S. pass? 

S/C You want two 30 second purges, right? 

HOU Right, one purge on each section. 

S/C Okay, fine, will do that. Want us to do that now? 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:20 A. M. CST 

Tape 279, Page 3 



HOU At your convenience. 

S/c Okay. Houston, 12 here. 

HOU Go 12. 

S/C I'm sure glad this is a GP 7. 

HOU You had us fooled. Ask Frank Borman if he'd 

like a good morning story. 
S/C All right. 

HOU Gemini 12, Houston. Confirm you stop the 

Og purge. Very good. 
S/C Stand by one. 

HOU We're standing by. 

Gemini Control Houston, still standing by. 

(PAUSE) 

HOU Gemini 12, Houston Cap Com, over. 

S/C Houston, 12 here. 

HOU Roger, we'd like to get this D-10 Mode Golf 

over the ETR if you can go ahead and do your 
thruster firing before LOS, we'd appreciate it. 

S/C Roger. 

S/C Houston, 12 here. We're not in a PC. . position. 

Would you prefer to get the thruster firings in 
the present attitude before we leave ETR? 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:20 A. M. CST 

Tape 279, Page k 



HOU That is affirmative. You have about three 

minute 8. Go ahead and fire them in your 
present attitude. 

S/C Roger. 

(PAUSE) 

HOU Looks good, 12. 

S/C What's that? 

HOU Looks good. 

S/C Okay. 
GTI LOS Turk. 

HOU Gemini 12, Houston. One minute to LOS. Besides 

your preliminary reentry update at Carnarvon, 
we'll be giving you the rest of . . . PLA's. 

ANT LOS Antigua. 

Gemini Control Houston, 89 hours, k& minutes now into the 
flight of Gemini 12. The EECOM here in Mission Control is closely 
monitoring his displays. We turned the platform off during this 
last pass since we received a main bus voltage reading of 22 - or 
21.6 rather. We want to keep around the 22 voltage level at least. 
We turned the platform off to kick that reading up a bit. It pres- 
ently looks good. On that last reading we read 25.3 volts. At 
91 hours, as was indicated to the crew, we plan to bring the platform 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:20 A. M. CST 

Tape 279 j Page 5 



back up. Standing by for acquisition with Canary this is Gemini 
Control Houston. 

HOU Canary from Flight. 

CYI Go ahead. 

HOU They put a TX in to turn the adapter off after 

your LOS. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:36 a.m. CST Tape 280 

Page 1 



eyt ...what was that? 

HOU They put a IX in and turned the adapter off after 
your LOS. 

C#C Then the TX is already in, right? 

HOU Affirmative. 

e#E Okay, fine. 

CYI We have TM' solid on the Agena. 

HOU Roger. 

CYI And TM solid on the Gemini. 

HOU Roger. 

CYI Both are go. 

Gemini 12, Canary Cap Com standing by. 

S/C Roger, Canarys. 

Gemini Control Houston. We continue to monitor this pass 
over Canary. 

CYI Okay, main buss is now showing 25.3. 

HOU Roger. 
CYI 19.6 amps. 

HOU Roger. 



\ 

% 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:36 a.m. CST Tape 280 

Page 2 

Gemini Control Houston. Still no conversation with the 
crew during this pass. They are no doubt quite involved with 
the ion sensing attitude control experiment, the D-10 experiment. 
Still standing by however, this is Gemini Control. 



CYI Gemini 12, Canarys. 

S/C Go ahead, Canarys. 

CYI Would you place your C-reentry radar to the 

continuous position please? 
S/C Roger . 

Would you give us the GET time acq please? 
CYI Roger. I'll give you one at 89 hours, 58 minutes, 

and U5 seconds. 
S/C Roger. 

CYI 3, 2, 1, Mark, 89 hours, 58 minutes, U5 seconds. 

S/C Thank you. 

CYI And we're just about to LOS. 

HCiD Kano go remote, Canarys go local. 

KNO Kano is remote and has acquisition. 

HOU Gemini 12, Houston Cap Com through Kano, over. 

S/C Go ahead. 

HOU Roger, 12. If you're not getting enough water, 

you're having trouble getting the volume you'd 
like, you can take the hexnut on the back of 
the water gun and turn it one turn counterclockwise. 



s 



GEMINI 12 MISSION COMMENTARY, 11/15/66,8:36 a.m. CST Tape 280 

Page 3 



S/C Roger . 

HOU That should give you about a five^fold increase 

in flow. 

S/C Have you ever seen that cartbon with that guy 

holding his nose in the glass shower? 

HOU Rog. You'll be another first in the space program. 

I got the rest of the PIA's. We'd like to get up 
to you here sometime if you have time to copy them 
now we can slip them in. 

S/C Standby. 

HOU Okay. 

S/C Just a minute. 

HOU Okay, this is the rest of block nine, 59 1 Bravo, 



92:24:55, 20 + 29, 26 + 01, 60 - 1 Alpha. 9^:00:50 
20 + 10, 25 + 36, 61 - k Bravo. 96:^9:37, 
20 + 35, 26 + 18, 62 - k Bravo. 98:52:09, 
20 + 27, 26+01, roll right, 85, correction, 
roll left, 85, roll right, 95, and weather good, 
for all areas. Over. 
S/C Got them down, thank you. 

HOJJ Roger. Correction to GETRC of 62 k Bravo. Should 

read 98:25:09- 
S/C Roger, 98:25:09. 

HOU That is affirmative. 



\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 8:36 a.m. CST Tape 280 

Page U 

CYI ..LOS. 
S/C Roger. 

CYI 23 minutes to Carnarvon. 

Gemini Control Houston, 90 hours, 5 minutes into the flight 
of Gemini 12. The earlier reference to Carnarvon or to correction 
— to the water gun in the conversation between Bill Anders and the 
Gemini 12 crew, Cap Com Anders was referring to a seal on the back 
of the gun, removing the seal on the back of the gun. Where he 
jestingly suggested that it might increase the flow of water five- 
fold. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l5/66» 9:12 AM CST, TAPE 28l 

PAGE 1 

Gemini Control Houston 90 hours 25 minutes into the flight of 
Gemini 12 at this time. We are approaching acquisition with 
Carnarvon tracking station. And meanwhile in Mission Control 
Center, we are continuing to countdown our retro time at 
9k hours 1 second for our planned landing area, 60-1. We have 
just acquired spacecraft 12 and we are standing by. 



CRO Carnarvon has TM solid, Gemini. 

Gemini 12, Carnarvon. 
S/C Carnarvon, Gemini 12. 

CRO Roger, we are here with you again. And if Buzz 

is ready for his finger exercise, we need a normal 
fuel cell purge, section 1 and then section 2. 

S/C Roger, normal, fuel cell purge, section 1 and then 2. 

That is 2 minutes in C^. 

CRO That is affirmative. 12, this is Carnarvon. Will 

you go manual on your 0^ heater and bring it up to 
700 onboard? 

S/C 12, Roger. 

HOU He has the circuit breaker open, Carnarvon. 

CRO Say again. 

HOU He has the circuit breaker open. 

CRO The heater circuit breaker, is that right? 

H0U[ That is affirmative. 

CRO Okay. No, we are showing it on up there. 

HOU Okay, fine. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 9:12 AM CST, TAPE 28l 



PAGE 2 

CRO Sorry about that. I thought I was flying... 

HOU Carnarvon Com Flight. 

CRO Go ahead. 

HOU Okay, you might, we casually mention, power up 

around 91 hours, we will have acquisition at 
91:0^. We will power him up over the States 
this pass. 

CRO Okay. You want them to hold off on that power up 

. until you have State side coverage. 
HOU Yes , just tell them we will have them power up 

when we get acquisition at the States. 
CRO Okay. 

HOU Everything is looking good. 

CRO Roger. 12, Carnarvon. 

S/C Go ahead. 

CRO Okay, it was mentioned to you about power up 



at 91 hours and we will have you power up over 
the States at 91:0^ approximately. 
12, Carnarvon, 1 minute until LOS. You 0^ 
pressure is coming up nicely. The fuel cells 
looking okay, we will see you next rev. 

S/C Roger. Thank you. 

CRO Carnarvon has LOS Agena. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 9:12 AM CST, TAPE 28l 

PAGE 3 

HOU Roger. 

Gemini Control Houston 90 hours 35 minutes now into the flight of 
Gemini 12. The Gemini 12 spacecraft with Command Pilot Jim Lovell 
and Pilot Buzz Aldrin has just passed out of range of Carnarvon. 
The next station to acquire will be Canton. This acquisition time 
is 90 hours U7 minutes into the mission. This is Gemini Control 
Houston. 

END OF TAPE 



\ 

GEMINI XH MISSION COMMENTARY 11-15-66 9:33 am CST Tape 282 

Page 1 

Gemini Control Houston. 90 hours k6 minutes 35 seconds now in 
to the flight of Gemini XII. The Gemini XII spacecraft is now 
approaching contact to the outer limits of the range of Canton 
tracking station. It is in its 57th revolution now into the 
mission and we are standing by for acquisition with Canton. 
HOU Gemini XII Houston Cap Com through Canton is 

standing by. , 
CTN Roger . 

Gemini Control Houston. We're still standing by during this pass. 
We've had no contact with the crew as yet. 

Gemini Control Houston. As we continue to stand by during this 
pass, the Gemini XII spacecraft is in an apogee 156. 8 nautical 
and a perigee 1U2.8 nautical. Standing by this is Gemini Control. 



HOU Gemini 12 Houston Cap Com one minute to Canton LOS 

CTN Roger, we'll give you your power up sequence over the 

states, Gemini 12. 
S/C Understand, power up sequence over the states. 

HOU That's affirmative. 

Canton has LOS 



Gemini Control Houston. 90 hours 53 minutes into the flight of 
Gemini XII. We've just gone out of range with the Canton tracking 
station. The next station to acquire will be Guaymas at 91 hours 



GEMINI XII MISSION COMMENTARY 11-15-66 9:33 am CST Tape 282 

Page 2 

h minutes 17 seconds in to the mission of Gemini XII. This is 
Gemini Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 9:51 a.m. TAPE 283 

PAGE 1 



Gemini Control Houston, 91 hours, k minutes now into the flight 
of Gemini 12. The Gemini 12 spacecraft is approaching ac- 



quisition with Guaymas tracking station. We are standing by 
for that pass over the states. 



HOU Guaymas go remote. 

GYM Guaymas remote. 

HOU Gemini 12, Houston Cap Com through Guaymas 

over. 

S/C Roger Houston. 

HOU Okay Gemini 12, I have your power up sequence 

for you. First of all I would like to assure 
you we are not going to give you a purge on 
this pass. 

S/C Hey, great. 

HOU Okay, we would like to have you do - to test 

your main batteries. 
S/C Main batteries testing. 32.8 up - no more. 

HOU Copy. 
S/C 33.9 on number 2 

HOU 33-9- 

S/C 33-9 on three. 3^.0 on four 

HOU Roger, copy 2k. 0. We will continue the rest of 

your power up when we start getting TM through 
Texas . . 

S/C Roger 

HOU If it's convenient we would like to have you 



GEMINI 12 MISSION COMMENTARY , 11/15/66, 9:51 a.m. TAPE 283 

PAGE 2 



try to get a readout on your reentry water 
tank bladder position or if you can't do 
that, give us an estimation of how much 
water you have drunk out of the reentry 
tank. We need this to calculate a good 
reentry weight for you. 
S/C I tried to look at the reentry tank a little 

while ago Bill, I can't even seem to find it. 
Let me talk with Buzz and see how much water 
we drank. 

HOU Roger. It figures as much. 

HOU Texas go remote. Guaymas go local. 

TEX Texas remote. 

GYM Guaymas 16c al. 

S/C We used about hO ounces of water. 

HOU Roger, understand kO ounces. That is total, is 

that correct. 
S/C Roger 

HOU Okay, Roger, we are ready to have you 

put Main battery number 1 and number 1+ on 
the line. 

S/c Roger . Number one and number four on the line . 

S/C Houston the water gun reads 2308 right now so 

we can give you a reading later on so you can 

figure it out. 

HOU Roger, gun readings are not valid with low 

pressure Gemini 12. 
S/C Okay. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 9:51 a.m. TAPE 283 

PAGE 3 

HOU Okay Gemini 12, we would like to have you 

bring both A pumps on the line, B pumps off. 
S/c A pumps on, B's off. 

HOU Okay, Gemini 12, you can bring your platform 

on line. 

S/C Roger, platform is guage BEF. 

HOU Roger, we will leave your computer off 

until we have had a change to take a look at 
your voltages. In any event it will be after 
fast East drop out. 

S/C Roger, any time. 

HOU If you are ready to copy, I have a water 

valving procedure that we would like to have 
you go through prior to retrofire and after 
your last drink. 

S/C Roger, go ahead. 

HOU Okay, this is after your last drink. Place 

your H 2 0 valve to normal. Condensate valve 
to "tank fill". Urine valve to "off". 
Gemini 12, do you want to check your IGS 
power supply. Very good. 
Okay, to continue with the water valving, 
after landing if you want to get a drink, 
turn your condensate valve to normal and 
your H 2 0 valve to "pressure off". That's it. 

S/c Got it. 

HOU Mighty fine. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 9:51 a.m. TAPE 283 

PAGE k 



HOU Looks like your voltages are holding 

pretty good. 

HOU Gemini 12, Houston. Be advised that our data 

shows that our deep end sensors are probably 
still working. 

S/C Roger, they were working fairly well going 

into the last night pass SES and then we got 
busy and let it go. Looked like we were 
getting some oscillation from both of them 
occasionally. 

HOU Roger . 

HOU Gemini 12, Houston Cap Com - Over. 

S/C Go ahead. 

HOU Roger. We would like to have you turn 

your rate gyro's to Primary. 
S/C Roger, gyro's go Prim. Say, do you happen 

to know what orbit it is we go to ftSE. 

HOU Well, it looks like you are in a 157 by 1U3. 

S/C Thank you, just wanted to see which we will do. 

HOU Give or take a little. Both are looking pretty 

good. 

HOU Bermuda go remote. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 10: 06 am CST 

TAPE 28U, 
PAGE 1 



FD Bermuda axe you remote. 

BDA Bermuda remote. 

HOU Gemini 12, Houston 'Cap Com, one minute 

to LOS, 3 minutes to Canary. 
SC 12, Roger. 

HOU You are sounding pretty chipper today. 

SC He wants to do one more EVA. 

HOU I would like to get a few more D-10's 

there too. 
SC Say again. 

HOU Disregard. 

SC Hey, what happened to the.Agena? 

HOU It's still out there. 

SC I thought after that phasing maneuver we might 

go chase it. 

HOU No we just stopped you and let you hold 

your own there. 
FD Canary Islands from Flight. 

CYI Go ahead. 

FD Next to your last; pass coming at you Bill. 

CYI Roger . 

FD Send us a number of mains and contigency alpha, 

we're trying to let the batteries warm up, want 
to watch the bus voltage before we bring the 
computer on. 

CYI Okay, you want a main and an Ulta Gemini. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 10:06 am CST 

TAPE 284, 
PAGE 2 



HOU Yes, a couple of them through your pass. 

CYI Roger, okay. We'll give them to you about 

every 10 minutes . 



And, this is Mission Control Houston. Apparently we have 
had loss of signal at Bermuda. We are coming across 
to the Canary Islands tracking station in'a couple of 
minutes. At 91 hours 23 minutes 1+8 seconds after liftoff 
and 2 hours 36 minutes and 8 seconds before retrofire, this 
is Mission Control Houston. 



END OF TAPE 



\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 10:12 a.m. CST Tape 285 

Page 1 

This is Mission Control Houston, Gemini 12 has just been 
acquired at the Canary Islands station. We'll stand by for 
any commentary between the spacecraft communicator, Bill 
Bastedo at Canarys and the crew of Gemini 12. Let's listen in. 



CYI He does not have his scanners on. 

HOU Say again? 

CYI He does not have the horizon sensors on. 

HOU Okay. 

CYI Pulse mode. 

HOU Okay. 

CYI Gemini 12, Canarys standing by. 

S/C Roger, Canarys. C-band and S-band keep dropping 

out of range. 
CYI Say again, 12. 

S/C C-band ... keep dropping out on the platform. 

CYI Roger . 

HOU We copy. 

CYI Okay, we're not getting any C-band, Flight. Here it ccmes 

HOU Roger, 

We need another Alpha and a main, please Canarys. 
CYI Roger, coming at you. 

We've got real ragged TM this time. We're trying 

to get good solid block before he sends you these 

summaries . 



\ 

\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 10:12 a.m. CST Tape 285 

Page 2 



HOU Okay. 

CYI Okay, he's got a secondary horizon scanner on now. 

HOU Roger. 

CYI Flight, Canarys. 

HOU Go ahead. 

CYI Okay, this TM we're getting is real ragged. We 

notice that there's a lot of C-band interference 
with the TM, so we'll try to get a good lock here 
before we send you these summaries. 

HOU Okay, do the best you can. 

CYI Gemini 12, Canarys. About, a minute to LOS. 

S/C Roger. 

CYI LOS Agena. 

HOU Roger. 

Kano go remote. Canary go local. 

KNO Kano is remote and we have acquisition. 

HOU Gemini 12, Houston Cap Com through Kano and standing 

by. 

S/C Roger . 

HOU Gemini 12, Houston. We'll be bringing your 

computer on the line after we've had a chance 
to take a look at you over Carnarvon. 

S/C Roger. 

HOU Roger. 



I 

\ 

GEMINI 12 MISSION COMMENTARY, ll/l5/66, 10:12 a.m. CST Tape 285 ^ 

Page 3 



HOU Gemini 12, Houston Cap Com. One minute to Kano 

LOS. 

S/c Roger, Houston. 

HOU Five minutes to Tananarive. 

S/C And as I understand it, Carnarvon will give us our 

reentry update, right? 
HOU Roger, we'll give you the preliminary update at 

Carnarvon. Give the MDIU quantities over the 

States. 
S/C Okay. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, H/I5/66, 10:27 A. M. CST 

Tape 286, Page 1 



KNO Kano LOS. 

Gemini Control Houston. We have had loss of signal from the 
Kano, Nigeria, voice remoting station. Spacecraft Gemini 12 will 
be coming up over the Tananarive voice remoting station in approx- 
imately four minutes. At 91 hours, Ul minutes and 2k seconds after 
liftoff and two hours, 18 minutes, 32 seconds before retrofire, this 
is Mission Control Houston. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-15-66 10:32 am CST Tape 287 

Page 1 



This is Mission Control, we're 91 hours ^5 minutes and 35 seconds 
after liftoff. Coming up over the Tananarive voice remoting sta- 
tion. They have had contact there. We'll stand by for spacecraft 
communicator here in Mission Control to converse with the crew. 
The spacecraft just went in to darkness. Let's listen in. 

HOU Gemini 12 Houston Cap Com through Tananarive and 

standing by. 

This is Mission Control. We're still standing by over Tananarive 
for any further conversation. It is unlikely that there will be 
any, but we'll leave the light open in case either Pete Conrad 
makes another call to the spacecraft from Tananarive. 



HOU Gemini XII Houston Cap Com through Tananarive and 

standing by. 
TAN Roger Houston 

CRO Flight Carnarvon 

HOU Go ahead. 

CRO Roger, Just two questions. One is retrofire update 

our remarks say Bluebird day 
HOU Say again. 

CRO Under item #6 under remarks it says Bluebird Day, I'm 

wondering about that. 
HOU Recovery says that means it's a beautiful spring day. 

CRO Hmm. Not any SOP 

HOU That's okay, we'll add it- 



\ 

GEMINI XII MISSION COMMENTARY 11-15-66 10:32 am CST Tape 287 \ 

Page 2 



CRO Okay. One more question 

HOU Gemini 12 Houston Cap Com one minute to Tananarive 

LOS 

TAN Roger . 

HOU Eight minutes to Carnarvon 

CRO That other question on on the accelerometer bias 

check, how many minutes you want to run this thing? 
HOU Stand by I think it's three. Three minutes. 

CRO Okay, thank you. 

HOU On that message you have I would like to change 



the order of 2, 3 and items 2, 3 and k under 
weather to U, 2 and 3. And read them up in that 
order that's the way they are ready to copy it. 
Got it? 

CRO Yeah, did they change their form up there? 

HOU That's what cap com tells me. 

And this is Mission Control Houston. We have had loss of signal 
through the Tananarive voice remoting station. Carnarvon will 
acquire in one minute, 92 hours one minute which is approximately 
eight minutes from now. Meanwhile we have a report of photographic 
effort made during the Gemini XII mission to this point in time , esti- 
mate made on the ground of course. Color photographs made with a 
70 mm "Hasselblacj!,.- they're estimated 350 exposures made at this time. 
With the Maurrer, 1 magazine of 50 exposures in color, 80 exposures 



GEMINI XII MISSION COMMENTARY 11-15-66 10:32 am CST Tape 287 

Page 3 



in ultraviolet. Two magazines in high speed black and white, for 
a total of 80 exposures. With a sixteen millimeter motion picture 
camera they have used an estimated 20 magazines for, 50 feet each, 
for a total of one thousand feet of movie film. This was all shot 
at 6 frames per second. Some further numbers now for the retro- 
fire and landing in area 60 dash 1. The current time for retro- 
fire is ground elapsed time of 93 hours 59 minutes and 58 seconds. 
The time of 1*00,000 feet will be 20 minutes Ik seconds after retro- 
fire. The target area is now positioned at latitude 2k degrees 
35 minutes north by 70 degrees west longitude. These numbers may 
change a few seconds one way or the other as we get additional 
tracking over Carnarvon and over the next stateside pass, but the 
numbers shouldn't significantly change except plus or minus two or 
three seconds. At 91 hours 55 minutes and 52 seconds after liftoff 
and 2 hours k minutes and 3 seconds before retrofire, this is 
Mission Control Houston. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 10:48 AM CST TAPE 288 

PAGE 1 

This is Mission Control Houston 92 hours 1 minute and k seconds after 
lift-off. We have established contact with Gemini 12 from the 
Carnarvon, Australia tracking stations. All systems are go on 
the ground. He is putting in a call. Let's listen. 



CRO Gemini 12, Carnarvon. 

S/C Go ahead. 

CRO Okay, we are giving a check on your voltage here 

and we will be letting you know about the computer 
in just a minute. 

S/C Okay. 

CRO Showing 23.7 on the cam. 

HOU Good. Okay, we are ready for the computer and 

accelerometer bias. 
CRO Okay, 12, this is Carnarvon. You can turn your 

computer on. Prelaunch, we would like to do an 

accelerometer bias check. 
S/C Computer is on prelaunch. 

CRO Roger . 

HOU How does the bus look after the computer, Carnarvon? 

CRO I am showing 23 something. We will get you a 

readout in a minute. 
HOU Okay. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 10 :WJ AM CST TAPE 288 



PAGE 2 

CRO . 23,2. 

HOU Good. 

CRO Okay, I have a short preretro for you whenever 

you are ready to copy. 
S/C Roger, stand by a second. Go ahead. 

CRO Okay, this Is for area l6-l Alpha. Your nominal 



IVI aft 302 down 113- Your initial deflections 
will be updated over the States. Pitch gimbal at 
kOOK 92. You will have a lighted horizon at retro- 
fire and also at kOOK. RET begins blackout 22 plus 
29. RET end blackout 27 plus 30. RET drogue at 
29 plus 16. RET main 30 plus 50. MDIU quantities 
also over the States and now for the weather. 
Cloud cover, 2000 scattered, high broken. Visibility 
10 nautical miles. Wave height - 3 feet with h to 
5 foot swells. Wind 360 at 15 . Altimeter setting - 
29.9U. Recovery call signs Air Boss 1, 2 and 3. 
The carrier is the WASP. And under remarks you might 
add it is a blue bird day. 

S/C Roger, Carnarvon. Could you tell me just where the 

carrier will be with respect to the target point so 
I, you know, so I can get a little English on it. 

CRO You don't want to hit it. Okay, stand by. 



GEMINI 12 MISSION COMMENTARY, II/15/66, 10:48 AM CST TAPE 288 



PAGE 3 

CRO Can you get that for me Flight? 

HOU Stand by. We are checking on it. 

CRO They are checking on that, 12. You will probably 

see the carrier before we have an answer for you. 
S/C Right, I was just.. 

HOU Carnarvon Com Flight. 

CRO Go ahead. 

HOU With respect to where the carrier will be, it 

will be 1+000 yards downstream of the target . 

point . 
CRO Okay. 

1+000 yards downstream of the target point, 12. 
S/C Sounds good. 

Did you have a preliminary GETRC report? 
HOU Preliminary preliminary 

CRO Stand by. Go ahead. I am listening. 

HOU Preliminary at this time is 93 hours 59 minutes 

58 seconds. 

CRO Okay. Preliminary GETRC for 60-1 Alpha 93 59 58. 

S/C 93 plus 59 plus 58. 

CRO Roger that. 

HOU And we need a Gemini Charley, please. 

CRO We will try and get one out there. Telemetry is 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 10:U8 AM CST TAPE 288 



PAGE k 

CRO pretty bad right now. 

HOU Okay. 

CRO 12, Carnarvon. We have about 1 minute until LOS. 

We will be standing by. 
S/C Roger. 

HOU And have them do a 30 second 0^ purge. 

Each section. 

CRO A 30 second 0 purge. On each section. Let me 

2 

check which one first. Which one first. 
HOU Doesn't matter. 

CRO Your choice. 

S/C Good. Do you have any readouts down there on how 

well we are aligned? 
CRO Your telemetry is coming in pretty bad. How about 

that. You look pretty good now. Good solid telemetry. 

Okay, you look good and solid, BEF. 
HOU Okay. Did you tell them that, Carnarvon? 

CRO That is affirmative. 

HOU- Okay. 

CRO We have had LOS. All systems were go at LOS. 



And this is Mission Control Houston. We have had loss of signal 
at Carnarvon. At 92 hours 10 minutes 12 seconds after lift-off 
and 1 hour k-9 minutes k3 seconds before retrofire, this is Mission 
Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY , NOVEMBER 15, 1966, 11:07 am CST 

TAPE 289, 
PAGE 1 

This is Mission Control Houston, 92 hours 20 minutes and 
11 seconds after liftoff. Coming up now over the Canton 
Island station. This will be an 8-l/2 minutes pass over 
the Canton Island voice remoting station. We'll Just skim 
by the lower edge of the Hawaii tracking station. 
Likely there will not be any contact made during the Hawaii 
pass. This will be the next to the last stateside pass 
coming up. Bill Anders putting in a call, let's listen. 
HOU Gemini 12, Houston Cap Com through Canton, 

civer . 

SC Roger Houston. 

HOU Roger, 12. We'd like to confirm that most 

o'f' your exposed film is in the center line 
camera box. Over. 

SC That is right. Most of the film is in the 
center line camera box 

HOU Roger, 12. Be advised you're fading in and 

out. We'll be counting you down over this 
site. Next pass about 3 minutes to the pass. 

SC Roger . 

HOU How are we reading you? 

How are you reading us? 
SC We are reading you four by four. 

HOU Roger, same. By the way, 12, Muhammad Ali 

sends his regards. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 11:07 am CST 

TAPE 289, 
PAGE 2 

SC Thank you very much. 

HOU He is the greatest. 

SC He sure was great last night. 

HOU Yea. 

Gemini 12, Houston Cap Com, through Canton 

how do you read? 
SC Loud and clear. 

HOU Mighty fine. 

And, we've had loss of signal from the Canton Island voice 
remoting station. We are at 92 hours 27 minutes and kl seconds 
after liftoff and 1 hour and 32 minutes ih seconds "before 
retrofire. Spacecraft Gemini 12 will be coming up over the 
next to the last stateside pass in approximately 10 minutes. 
We'll come up again with that pass. This is Mission Control 
Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 11:24 a.m. TAPE 290 

PAGE 1 



This is Mission Control Houston, 92 hours, 38 minutes aft&r 
liftoff. Standing by for this next to the last Stateside 
pass. There goes the call from Bill Anders , let's listen 
in. 

HOU Gemini 12, Houston Cap Com - over. 

HOU Gemini 12, Houston Cap Com - over. 

HOU Guaymas go remote, California local. 

GYM Guaymas local. 

CAL California local. 

HOU Gemini 12, Houston Cap Com - over. 

S/C Gemini 12 - go. 

HOU Roger, I have your retro update if you are 

ready to copy. 
S/C Roger, go ahead. 

HOU Roger, your GETRC remains the same 935958, 

RET kOO K, 20 + Ik, RET RB 26 + 02 , Bank left 
50, bank right 60. Down range deflection 
0 degrees plus 230 55 degrees plus 6k, 90 degrees 
minus 80. Read back. 

S/C Roger, understand 50-1 GETRC 935958, RET kOO K 

20 + Ik, RET RB 26 + 02, bank left 50 degrees, 
bank right 60 degrees, ... RBI's aft 302, aft 
113 down, deflection 0 degrees 230 55 degrees plus 
6k, 90 degrees minus 80. 

HOU Roger, that's correct Gemini 12. 

S/C Houston, 12, did you copy. 

HOU Roger, we copy, that is correct. 

S/C And the pitch at kOO K is 92 degrees, right. 

HOU That is affirmative. 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 11:2U a.m. TAPE 290 



PAGE 2 

HOU Texas local, Guaymas remote. 

HOU Gemini 12, Houston, will you put on Main batteries 

2 and 3 on the line. 
S/C Two and three on the line. ...batteries on one. 

HOU That is affirmative. 

HOU Gemini 12, Houston Cap Com, will you put 

section two to warm-up. We gonna start turning 
it off so you won't have to worry about it. 

S/C Roger, Section 2 warm-up. 

HOU Gemini 12, Houston Cap Com will you put your 

computer in pre -launch for your retro load. 
S/C Roger, computer is in pre-launch. 

HOU Roger 

HOU Roger, here comes your retro load - mark 

S/C Roger, we got it. 

HOU Roger, it looks good on the ground. And Gemini 12 

are you ready for your MDIU quantities. 
S/C Roger, ready to copy. 

\ 

HOU Roger, Address 63 22 correction Address 63 23 32U, 



Address Ok 68 69U, Address 65 correction Address 
05 06 812, Address 66 69 22k } Address 67 27 1+27, 
Address 08 ko 088, Address 09 07 366, Address 
10 02 , Address 11 29 000. 

S/C Roger, I update the MDIU quantities. 

HOU Roger, and it looks good on the ground. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 11:21+ a.m. TAPE 290 

PAGE 3 



HOU Gemini 12, could you put your quantity read 

switch to ILj. 

HOU Gemini 12, standby for transmitting TR. 

S/C Go ahead. 

HOU One - mark. 

S/C Roger, received it. 

HOU Roger. 

HOU Gemini 12, your TR looks good on the ground. 

S/C Roger. 

HOU Gemini 12, will you put your Section 2 power 

switch OFF. 

S/C Power switch two OFF. - The Delta P light went 

out. 

HOU Roger, we would like to give you a check on 

your TR, Gemini 12. 
S/C Go ahead. 

HOU Will give you a mark at 71:30:06. 

S/C You are fading out. 

HOU Roger, we would like to check your TR, we will 

give you a mark at 71:20. 
S/C Understand 71:20 

HOU Roger, 5 seconds, 2,1- mark - 71:20. 

S/C .. Roger, 71:19- 

HOU That's good. 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 11:35 A. M. CST 

Tape 291, Page 1 



\ 



HOU Gemini 12, Houston Cap Com. RCS ring A 

rate pressure shows slightly high, will you 
pulse it a few times? 

S/C Will you say again, Flight? 

HOU RCS ring A rate pressure shows slightly high, 

will you fire RCS ring A a couple of times? 
S/C Roger, ring A. 

HOU Gemini 12, Houston Cap Com. We'd like for you 

to hold off firing ring A for a little awhile. 
We'd like to watch it. 

ANT AOS Antigua. 

S/C Roger, A ring off. 

S/C Houston, fire B. 

HOU ' Roger, B looks good. 

HOU Gemini 12, Houston Cap Com. Don't be too surprised 

if the com through Canton is not too hot the next 
pass. 

S/C Understand. Wd like for you to give us a 22 - 

22 time hack. 

HOU Willco. 

HOU Bermuda go remote. 

BDA Bermuda remote. 



(PAUSE) 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 11:35 A. M. CST 

Tape 291, Page 2 



HOU 



Gemini 12, Houston Cap Com. One minute to 



LOS. We'd like you to not use ring A till 



we advise you over Canaries in five minutes. 



S/C 



Roger. 



HOU 



Canaries from Flight. 



CYI 



Go ahead, Flight. 



HOU 



I want you... (interrupted) 



And this is Mission Control Houston. Apparently we have had 
loss of signal over the Eastern Test Range, the Antigua station. 
Be coming up next over the Canary Islands Station for the last pass 
for this mission. As a matter of fact, for the last pass for the 
Gemini program. We're about three minutes from Canary. We'll be 
back up at that time for that pass continued through the Kano, 
Nigeria voice remoting station pass. At 92 hours, 58 minutes, 
U3 seconds after liftoff and retrofire minus one hour, one minute 
and ten seconds, this is Mission Control Houston. 

END OF TAPE 



GEMINI 12 MISSION COMMENTARY, ll#/66, 11:^8 AM CST TAPE 292 

PAGE 1 

This is Mission Control Houston, Gemini 12 is coining up over the 
Canary Island tracking station. This will be a fairly low elevation 
angle pass. 2.U7 degrees above the horizon. For a duration of 
k minutes and 20 seconds. We are standing by for Canary Cap Com 
to put in a call to the crew. The Canary pass will blend into the 
Kano, Nigeria voice remoting station pass. Let's listen in. 
CYI Gemini 12 Canary Cap Com. 

S/C Go ahead Canary. 

CYI Okay, your radiator rate pressure is up a little 

bit. You want to use it a little bit to see if 
we can bring this rate pressure down? 

S/C Okay.... 

CYI Say again. 

S/C Okay, I understand. ... 

HOU Let me know when he starts using it and what it comes 

down to. 
CYI Roger. 
HOU How is it coming Canary? 

Is he using it? 
S/C How does it look Canary? 

CYI Say again 12. 

S/C How does it look? 

CYI ...reads k-13 right now. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 11:48 AM CST TAPE 292 

PAGE 2 

HOU Use it. Use it. Have him use it. 

CYI Go ahead and use some more. 

HOU Out of ring A. 

CYI Out of ring A now. 

S/C I am using ring A only. 

HOU And is it coming down, Canary? 

CYI It is coming out right now. 

HOU Say again. 

CYI 379. This time. 

HOU Okay. 

CYI Want them to use a little bit more? 

HOU Yes, use a little more. 

CYI Okay 12, it is down to 379, use a little bit more. 

HOU And what is the source pressure? 

CYI Stand by. 

2.35. 

HOU Okay. 

And what is it now please? 
CYI We are getting some bad data right now. Stand 

by. 

HOU Okay. 

CYI Do you want us to find out what he is reading 

onboard? 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 11:U8 AM CST TAPE 292 



PAGE 3 

HOU He can't read reg. 

CYI You are right. 

HOU And we want to stay on ring A and advise him to use 

ring A for the rest of the activity Canary, just to 
keep this situation relieved. 

CYI Gemini 12, Canary. 

S/C Go ahead. 

CYi Okay, we would like for you to stay on ring A for 

the rest of your activities here. So we can keep 
this pressure down. It is 310 down here now. 

HOU Okay. Okay, normal operation in ring A. 

CYI Say again. 

HOU Okay. 

CYI Complete the last in ring A. Roger. Got about a 

minute until LOS. And have a good trip home. 
S/C Thank you. 

HOU Canary Com Flight. 

CYI Roger, Flight. 

HOU Keep a close eye on that and let me know if you think 

the regulator is working there. You probably don't 
have much time. 

CYI Now- we have some real bad data too. 

HOU Say again. 

CYI Well, we have some real] spotty data here. 



CifcMJJU m MISSION COMMENTARY, 11/15/66, 11:^8 AM CST TAPE292 



PAGE k 

HOU Okay, what vas the lowest reg you got?=^ 

CYI 310. 

HOU Lowest reg was 310? 

CYI Roger. 

HOU Okay, Bill, thank you. What was his final source? 

CYI Stand by one, we will camp it out. 2.33 final 

source. I will give you a final reg here in just 

a minute. 
HOU Say again source. 

CYI 2.33 

HOU 2.33 thank you. And he copied to go to normal 

operation on ring A. To keep it relieved. Did he 
not? 

CYI Roger. 306 three zero six. 

HOU That was your last reading? 

CYI Roger. We have had LOS. 

We have had loss of signal at Canary. We will stand by for the 
Kano pass, for further conversation. 
HOU Canary Com Flight. 

CYI Go ahead Flight. 

HOU Did it look like he was firing a lot, or did it 

look like he was settling out more. Oh, you don't 
have thrusters, okay. 



\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, U:U8 AM CST TAPE 292 * 



PAGE 5 

CYI We don't have the thrusters. 

HOU Yes, okay. 

HOU Kano go remote. 

KNO Kano remote with acquisition. 

HOU Gemini 12, Houston Cap Com through Kano. Over. 

S/C Okay, Houston. 

HOU Roger, with respect to RCS ring A, we would like for 

you to do the rest of your normal maneuvers on ring A 

rather than B or OAMS. 
S/C Roger, we now have ring A only, we are aligning the 

platform with ring A. . . . 
HOU That is affirmative. And we would like to have you 

use both rings for retrofire, use ring A first for 

entry. 

S/C Roger, both rings for retro and ring a for reentry. 

HOU And what do you have for an RCS onboard readout? 

S/C Ring A reads 2250... and 58 - 57 degrees, ring B 

reads 21+50 psi and 67 degrees. 
HOU Roger, copy. Gemini 12, Houston Cap Com, 1 minute 

to Kano LOS. Could you give us an RCS source pressure. 

S/C Roger 

HOU Copy 2250. 

KNO Kano has LOS. 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 11:48 AM CST TAPE 292 

PAGE 6 

This is Mission Control Houston. We have had loss of signal 
at the Kano, Nigeria voice remoting station. To summarize 
briefly what has been going on during the Canary and Kano pass, 
apparently the source pressure in ring A of the reentry control 
system of Gemini 12 was slightly overpressurized. And to relieve 
this over pressurized condition, the crew was instructed to use 
Ring A during the platform alignment and other activities prior 
to retorfire. So that some fuel would be used thereby, relieving 
the overpressurization condition. At 93 hours 15 minutes 2k seconds 
after lift-off and kh minutes 32 seconds before retrofire, this is 
Mission Control Houston. 

END OF TAPE 



Y 
Y 



GEMINI XII MISSION COMMENTARY 12:07 pm CST 11-15-66 Tape 293 

Page 1 



This is Mission Control Houston. We have had acquisition at Tanana- 
rive voice remoting station. Pete Conrad is calling the crew now. 
Let's listen in. 



CONRAD Gemini 12 Houston at Tananarive Could we have an 

RCS ring A source please. 

S/C 2150 is the RCS ring A 

HOU Roger 2 15 0 thank you. Standing by. 

Gemini 12 Houston, the data is good, the load is 
valid we will not change it and we'd like to get one 
more ring A source pressure from you please. We're 
about 1 and l/2 LOS. 

S/C Roger, ring A now 2125. 

HOU Roger 2125, we'll see you during the count, over 

Canton . 

Tananarive LOS 

And we have had loss of signal at theTatoanarive voice remoting station. 
Meanwhile in the prime recovery area in the west Atlantic, one of the 
air force air rescue service HC130H "Herky-Bird" aircraft has been 
diverted to investigate a life raft seen floating some 90 miles south 
east of Grand Turk Island. Other aircraft from Kinley Air Force Base 
in Bermuda have been deployed to take up the slack in the situation 
with the rescue aircraft. At 93 hours 29 minutes 38 seconds after 
liftoff and 30 minutes and 17 seconds before retrofire this is 
Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 12:22 PM CST, TAPE 29k 

PAGE 1 

This is Mission Control Houston. Coming up over Carnarvon for 

the last pass of this mission and the last Gemini spacecraft to 

pass over the Carnarvon station. This will be a relatively high 

elevation angle pass, 57 degrees for a duration of 8 minutes 

and U2 seconds. They have had initial contact with the spacecraft. 

Let's listen in now. 

CRO 12, Carnarvon. 

S/C This is 12, go. 

CRO Okay, we have about a minute and 20 seconds for 

your TR 22 minute time hack. 
S/C Roger, standing by. 

Carnarvon, Gemini 12. Preretro checklist is 

complete . 
CRO Roger. 

HOU What is his source pressure please? 

CRO 2150. 

HOU 2150. Thank you. 

What is his reg A now, Cap Com? 

CRO 30 seconds. 387. 

HOU 387 okay. 

Give him your mark and then let him know it is 
still a little bit high and we want him to use it. 

CRO Roger . 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 12:22 PM CST, TAPE 294 

PAGE 2 

CRO 10 seconds. 5-4-3-2-1. Mark 22'minutes. 

S/C Roger, we read 2159. 

CRO Say again. 

S/C Roger, read 2159 out of the computer. 

CRO Roger. Okay, you are a little high on your 

reg pressure. How about using that ring A a 

little bit. 
S/C ...fire it. 

CRO 391.-. 
S/C ..entry. 
HOU 390 are you reading? 

CRO That is affirmative. 

HOU Is he using it? 

CRO Affirmative. 

HOU Let me know when it is coming down. 

CRO Holding at 391 Flight. 

HOU 391! 
CRO That is affirmative. 

-.391. 

HOU Okay, have him fire it, bring it down. I would 

like to get it down to about 350 where you are. 
CRO Okay. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 12:22 PM CST, TAPE 29k 



PAGE 3 

CRO 12, Carnarvon. 

S/C Go ahead. 

CRO Okay, we are still a little high on that hydrogen 

pressure. You guys can do a better job than that. 

S/C 

HOU Tell them what you are at, Jim. 

CRO Okay, we are showing about 392 here on the ground. 

We want to get it down to about 350. No change, 

Flight. 2110 on source pressure. 
HOU Roger. Ring B look good? 

CRO That is affirmative. 

S/C 

CRO Let me give a quick look-see. 

HOU Say again. 

CRO I was talking to the crew. Hey, bully for you 

guys, you have got it down 1 psi. Use a little 
more. Down to 387. Use a little more. 

HOU And send us a Gemini main, please? 

CRO Roger. Still 2110 on source. 

HOU Okay. 

S/C How does it look. 

CRO Let me check. Okay, you can stop now. Relax. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 12:22 PM CST TAPE 294 



PAGE k 

HOU What have you got, Jim? 

CRO 325. 

HOU Okay, tell them that ought to be great for retrofire. 

CRO Okay, 12, this is Carnarvon, we are down to about 

325 and that is good for retrofire. 
HOU And what is the source? 

And what is your source pressure, Carnarvon? 
CRO Checking on it now. 

HOU Okay. 
CRO Same, 2110. 

HOU Okay. Jim, tell them we are very happy with that. 

CRO Okay. Giving it one more check, here. And it is 

325. 

HOU Okay. 

CRO 12, Carnarvon. 

HOU In the blind, Jim. 

CRO Gemini 12, Carnarvon, your rate pressure looks real 

good at 325, and steady. 
S/C Roger. 
HOU Carnarvon Com Flight. 

CRO Go ahead. 

HOU And how is source and reg on B? 

CRO Stand by. 

We will get you a couple of cams on that. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 12:22 PM CST, TAPE 29k 



PAGE 5 

CRO 2580 on source pressure. 

HOU Okay. 

CRO 12 j Carnarvon, 1 minute until LOS and it has been 

a pleasure working with you guys, see you back in 
Houston . 

S/C Roger, thank you. Thank you very much C arnarvon. 

CRO Bye . 

296 on reg pressure. 
HOU Okay, 296. 

LOS main, LOS OVC. 
CRO Roger. They are already on their way, Flight. 

HOU Okay. 

CRO We have had LOS Gemini. All systems as stated. 

HOU Okay, good job. 



And this is Mission Control Houston. We have had loss of signal 
at the Carnarvon, Australia tracking station. Meanwhile, the 
situation reported earlier where a life raft had been sighted near 
Grand Turk Island, the Coast Guard has taken over the operation and 
it appears that a civilian aircraft is down in the water at that 
location. The air rescue service aircraft out of KindleyAirforce 
Base in Bermuda have gone back on station to support Gemini 12. 
At 93 hours ^6 minutes and 5 seconds after lift-off, 13 'minutes 
K8 seconds before retrofire, this is Mission Control Houston. 
END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 12:U3 pm CST 

TAPE 295, 
PAGE 1 

This is Mission Control Hourton. Spacecraft Communicator, 
Pete Conrad, has begun conversation to Gemini 12 through 
the Canton Island station. They are up to three minutes 
before retrofire. MARK - three minutes to retrofire. 
Let's join the conversation. 

HOU MARK three minutes and counting. 

SC Checklist is complete. 

HOU Houston , roger . 

The crew of Gemini 12 will have a balmy 77 degree temperature 
in the prime landing area. In addition to the prime recovery 
vessel the USS Wasp in the prime recovery area, there is the 
Destroyer Lloyd Thomas; four SH3A helicopters off the Wasp} 
two P3A's out of Jacksonville, these are aircraft with Air 
Boss aboard, Air Boss 1 and Air Boss 2; two H6-130H Herky 
Bird Aircraft at both ends of the landing footprint; two 
JC 130 Aircraft, these are tracking aircraft from the Eastern 
Test Range and two J6 130 Aircraft who act as communications 
relay aircraft. We are now one minute and 18 seconds to 
retrofire. MARK - one minute. We've had separation of the 
adapter section. Thirty seconds - MARK. 10, 9, 8, 7, 6, 5, 
1+, 3, 2, 1, RETROFIRE. We have confirmation all four retrofire 
rockets have fired. Let's join the conversation. 
HOU Houston copy. 

SC Retro Jett 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 12:U3 pm CST 

TAPE 295, 
PAGE 2 



HOU Roger, retro jett. We didn't copy the 
left - right IVI's. Did you have any? 

SC Left four. 

HOU Roger, left four. 

SC (garbled) 

HOU This is Houston, say again. 

SC Roger, 301.1* 

HOU Roger, 301. k. 

SC down 

HOU Roger, copy. 

FD Canton go local. 

HOU Standing by for you Hawaii. Send us some mains 
and some OBC's. 

HAW We got C-band on the vehicle we got no TM. 

HOT^ Roger . 

HAW Gemini 12, Hawaii 

SC Go ahead Hawaii. 

HAW Roger, would you confirm that you are on real- 
time and acq aid with TM. 

SC (garbled) 

HAW Roger, go to real-time and acq aid please. 

SC Roger, real-time and acq aid. 

HAW Roger, we got it. Thank you. 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 12:^3 pm CST 

TAPE 295, 
PAGE 3 



HOU How does RCS ring A look to you Hawaii? 

HAW 298 at the present 

HOU Roger, 298. 

HOU Hawaii, do you want to give him an RET time 

acq". - 

SC Postretro jett checklist is complete. 

HAW Roger, on your relay, MARK at + 5 minutes in 

about 30 seconds if you want it. 
SC Roger, we MARK. 

HAW 10 seconds 

3, 2, 1, MARK. 
SC Roger. 

HAW Okay, and your source pressure in ring A is 

looking good, reg^> pressure good. 
SC Thank you. 

HOU Hawaii from Flight. 

HAW Go ahead Flight. 

HOU Just for the record, does it look like ring A 

reg is operating in the "band of the regulator? 
HAW It is in there right now, Flight 

HOU Okay. 

HAW To bad we lost those thrusters . 

You know that indication of the RCS ones. 



END OF TAPE 



GEMINI i; MISSION COMMENTARY, 11/ 1'.. A*., 12: c ;3 p.m. TAPE 2<#> 

PAGE 1 



They are looking real good from here. 
HOU Roger 

HOU Hawaii will you send us a couple more OBC's. 

HAW Roger, Wilco. 

HOU And a couple more Mains. 

HAW Roger 

HOU Hawii from Flight. 

HAW Hawaii - one minute to LOS - Go Flight. 

HOU Based on IVT's initial deflections, 6l nautical 

miles up. Pass that on please. 
HAW Okay, initial deflection based on the IVI should 

be 6l nautical miles up. 
S/C Roger, 6l up. 

HAW Roger . 



And this is Mission Control Houston. We have had loss of 
signal at Hawaii. Should be coming across the California 
station in about a minute and a half. Hawaii Cap Com reports 
there is no problem at all during this final pass over 
the Hawaii station. We will continue to monitor air-to 
tround for contact when it is established through the 
California on this final Stateside pass. The target point 
for Gemini 12 stands at ?h degrees, 35 minutes North latitude 
by 70 degrees West longitude. This is some 600 miles East 
of Cape Kennedy. All recovery forces are deployed on 
station. Standing by for contact at California. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 12:53 p.m. TAPE 296 

PAGE 2 



Gemini 12 at the present time is at approximately 117 
nautical miles in its reentry path. We are at retrofire 
plus 12 minutes, 26 seconds. Conrad is calling through 
California, let's join the conversation. 



S/C 12 here. 

HOU Roger, we are standing by, I'll pass you the 

data as soon as I can get it. 
S/C Roger. 

Gemini 12 at this time should be at 109 nautical miles 

altitude. We are at 13 minutes, 1+5 seconds after retrofire. 

20 minutes and 33 seconds before splash. 

HOU Guaymas go remote. California go local. 

GYM Guaymas local . . . guaymas remote . 

CAL California local. 

Gemini 12 at the present time should be at about 95.88 



nautical miles in altitude, crossing the 120 degrees West 

longitude Meridian 

END OF TAPE 



\ 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 1:03 P. M. CST 

Tape 297, Page 1 

This is Mission Control again. We're down now to 88.6 nautical 
miles altitude as Gemini 12 crosses the coastline of Baha, California. 
Gemini 12 will cross just to the north of the Guaymas, Mexico, station. 
We're about three minutes now from 1+00,000 foot mark. Let's continue 
to monitor air-ground for any conversation. 
HOU Guaymas go local, Texas go remote. 

TEX Texas remote. 

GYM Guaymas local. 

HOU Gemini 12, Houston. Your kOO K time 20+08. 

S/C 20 + 08, thank you. 

This is Mission Control. Gemini 12 should be down to approxi- 
mately 1+00,000 feet. The ground track is passing just south of 
San Antonio. Let's join the conversation. 
HOU RETRB 26+03. 

S/C RETRB 26 + 03, bank left 1+6, bank right 56. 

HOU 12, Houston. We passed you 20 + 08 for 1+00 K 



time and we thought you said 28 back. 20+08. 



S/C 



20 + 08 for 1+00 K, thank you. 



HOU 



Roger . 



HOU 



12, Houston. Your drogue time, 29 + 02. Your 



S/C 



main, 30+26. 

Roger, understand. 29 + 02 drogue, main 30 + 26. 



HOU 



12, Houston. Begin blackout and end blackout times 



are good. 



\ 
\ 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:03 P. M. CST 

Tape 297, Page 2 

S/C Roger. 

HOU Have a good ride. 

This is Mission Control. Gemini 12 should be entering the 
blackout period at this time, is at 52.21 nautical miles altitude 
just south of the Mississippi Delta. We're now 11 minutes, 27 sec- 
onds till splash. Retrofire plus 23 minutes. 

Still in the blackout. 

10 minutes, 20 seconds till splash. Still in the blackout. 
Gemini 12 is just crossing the Florida peninsula at the present 
time. Should be down to about ho nautical miles in altitude as 
it crosses the southern portion of the Florida peninsula. 



END OF TAPE 



GEMINI XII MISSION COMMENTARY 11-15-66 1:13 pm CST Tape 298 

PAGE I 



This is Mission Control Houston. We're coming up on the end of 
blackout. We're still 7 minutes and 26 seconds till splash. At 
27 minutes after retrofire. We've had radar contact off the Wasp 
confirmed. Mark. End of blackout. They've had acquisition at 
Grand Turk Island. 

HOU Gemini 12, Gemini 12 Houston standing by. 

Gemini 12, Gemini 12 Houston standing by. 
S/C Roger, automatic reentry. 

HOU Houston Roger. 

12 Houston, our data says you're right in the money. 
S/C Roger. Address 86 reads 2kkl 

HOU Roger 
S/C (garbled) 
HOU Copy 
S/C (garbled) 
HOU Roger 

S/C reads 2^36 

HOU Roger 2U36 

12 Houston, we've got you on the "Boob tube" you 

look good. 

Visual"" contact 
HOU Gemini 12, we have you on the tube. 

12 Houston, smile you're on the tube 
And this is Mission Control, Gemini XII has gone to 2 point suspen- 
sion it's off the starboard beam of the prime recovery vessel Wasp. 



GEMINI XII MISSION COMMENTARY 11-15-66 1:13 pm CST Tape 298 

PAGE 2 

The rendezvous and recovery can of Gemini XII spacecraft is 
drifting alongside Gemini XII as they near the water. The Wasp 
reports that both the spacecraft and the R & R can are in 
visual sighting of the carrier. The carrier Wasp reports that 
the helicopters are right with the spacecraft, we're 35 seconds 
to splash. 20 seconds to splash. Mark. Should be splash. 
We've had splash down confirmed. Rough estimates from the Wasp 
indicate that the splashdown occurred some 2 and l/2 to 3 miles 
abeam of the Wasp, however, this will likely be refined and the 
numbers will change several times before we come up with a final 
number . 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:23 PM CST, TAPE 299 

PAGE 1 

This is Mission Control again. One comment from Mission Director 
Bill Schneider here in Mission Control was as he saw the splash- 
down occur "Well, I am out of a job." We are now at some 36 minutes 

seconds after retrofire. The last estimates of distance of Gemini 12 
from the WASP were something like h miles. We are standing by here 
in Mission Control for any air-to-ground contact between the crew, 
I should say water-to-ground contact. 

..pick up Air Boss live on air ground. 
Okay is that on... 

And it looks like he is talking to the astronauts. 

I can't tell at the present time spacecraft is 

rolling quite a bit . Airborne . . . plugged in and the . . . 
around the spacecraft at this time . ... and we have 
a signal from the swimmers that the astronauts are 
okay. A signal from the swimmers that the astronauts 
are okay. He has plugged in the spacecraft and is in 
communication with them, they are okay at this time. 
The collar is about 3/Uths of the way around the 
spacecraft and it appears that it is being attached 
right now. Search 3 is hovering downwind, watching 
the proceedings on photo 1. The parachute is still 
on the surface, the air bubbles are keeping it up... 
package is not in sight at this time. The collar 
is completely around the spacecraft now, all the 
antennas are erected and no communications have been 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:23 PM CST, TAPE 299 

PAGE 2 

established. . .radio, with the astronauts in the 
last few minutes. However, the swimmers have 
...spacecraft and they are okay. I can see the 
astronauts' s helmets. The glass through the port, 
but you cannot make them out at this time. The 
collar is still around, as not yet inflated, 
however* ...upwind about 50 feet away, one 
swimmer is going over to retrieve the raft now. 
Wind is about 15 to 20 knots .... due north.. 

1 mile south of the spacecraft at this time, making 
an approach. A very close recovery. Spacecraft 
was watched all the way down until it hit the 
water and was a beautiful recovery. At this point 
it looks like the collar is about to be inflated. 

PHOTO 1 This is Photo 1 reporting that Gemini 12, switch 

2 and now switch 3 are on station and the swimmers 
operating from that point .. .pulling the raft back 
over to the spacecraft and it looks like the collar 
is firmly attached now. The spacecraft is floating 
normally and we have a ... that the astronauts are 
okay. This is Photo 1, Air Boss 1 62 and 63 

are now... and Search 1 arriving in just a few 



GEMINI 12 MISS I Of COMMENTARY, 11/15/66, 1:23 PM CST TAPE 299 

PAGE 3 

PHOTO 1 minutes. There are now h helicopters at the 

scene. No troubles at this time. The... of the 
spacecraft. . .slowed down somewhat because the 
collar is attached and is floating very steadily. 
They made ... I don 1 t believe we will cover that . 
. . . .The port side of the spacecraft inflation 
collar being inflated and the starboard side 
coming up now. The starboard side is almost 
full, port side is completely full at this time. 
All swimmers are in the water. No difficulties 
at this time, but the astronauts are signaled 
that they are okay. The crew has completely 
inflated now, the collar is completely inflated 
around the spacecraft and there appears to be no 
difficulty whatsoever. All the antennas are up 
on the spacecraft and the. . .indicators shows 
evidence of having been scarred by the atmosphere. 
The rubber boat has been inflated and has now 
been pulled over to the spacecraft and is now 
being pulled over to the spacecraft and now being 
attached by the swimmers. The U. S. S. WASP is 
now steaming about a half a mile east of the 
spacecraft, getting in position for recovery. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:23 PM CST TAPE 299 

PAGE U 

PHOTO 1 . .barely able to see the spacecraft in the water 

at this point because. .. .details of people can 
be made out on deck. The number 1 swimmer is 
now climbing up on the spacecraft and to attach 
the top of the flotation collar more securely 
around the heat shield head. This is Photo 1 
reporting recovery of Gemini 12 astronauts. 
The astronauts have signaled they are okay. 
...was a good recovery ... .Everything appears to 
be going normally at this time. Now there are 
2 swimmers , one in the . . . and one up on the 
floatation collar . ... secure to the collar and 
the ..swimmers in ..with the astronauts. There 
appears to be no difficulty at this time. 
...in the water and the U.S.S. Wasp is maneuvering 
up north of the spacecraft up wind in order to 
get in position for pickup. Search 3 is hovering 
slightly downwind and to the west and there are 
k helicopters and Air Boss 1. The swimmers are 
talking to., now and secured the last... collar. 
The astronauts have signaled that they are okay. 
The astronauts are okay, the spacecraft is floating 
normally. The Gemini 12 recovery is a beautiful 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 1:23 PM CST TAPE 299 

PAGE 5 

PHOTO 1 shot, watching it at least 2000 feet all the way 

down and had some ... spacecraft as it descended. 
No difficulties whatsoever. .it looks like .. 
not in sight... and it is doubtful whether the 
.. package can be recovered since we don't have 
it in sight. ...two up on the spacecraft and 
...back in the water. Photo 1 over to Search 3 
for ... port side, west side of the spacecraft. 
Search 3j we are ferrying the swimmers. . .rubber 
raft. . .spacecraft at this time. They are tying 
the raft to the collar with light twine. Now 
maneuvering the craft 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:33 P-m. TAPE 300 

PAGE 1 



... to the spacecraft. They are tying the raft to the 
collar with light lines. They are maneuvering the raft to 
the far side to attach it on the far side. They have attached 
small amounts of line to the rubber raft. They are now moving 
the raft to the up wind side of the spacecraft where they 
will attach it. The dye line is very visible and 
apparently the spacecraft has not been bound independently 
....'point, say about three with the swells. There is no 
problem at all. From this side we are observing them 
attaching the rubber raft to the collar at this point. The 
antenna is still erected, very visible from our position. 
Also the dye marker is very vivid against the blue water. 
This is .... back to .. one. 

This is .... one 0 one. There now seems to be a little 
activity now they have attached the raft to the floatation 
collar. The hatches are still closed. I have not seen one 
of the astronauts yet. They have signaled that they are 
Okay. Our crew is out of the water, one on the collar. 
.... are climbing up. They have taken off their ■ aqua lungs 

for better maneuverability around the spacecraft is 

now moving up wind getting ready for the pickup of the 
spacecraft. They don't have far to go, an extimated 2 to 

2--^ miles maximum from the point of splashdown 170 

(garble). This is 1+01 reporting Gemini 12 (garble) .. 
(garble). There is no one pulling on the spacecraft and 
it seems to be floating comfortably ... (garble). This is 
kOl, nothing further to report, we have had a (garble) .. 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:33 p.m. TAPE 300 

PAGE 2 

a rather pretty day. The spacecraft is observed to be about 
2000 feet ( garble ) . The spacecraft reported leaving a nice 
trail of dye in the water and we have at least two smokes on 
the sceen. (garble). Okay the port hatch is now open ... 

taking the antenna down did you see the astronauts 

from your position. Over to you. 

This is .... 3 -We have a very good view at this point .... 
now the third swimmer (garble) from the port hatch and 
waving to the astronauts from the port hatch. The astro- 
nauts have removed their helments and he is very well 
visible from this point, (garble) the swimmers at this time. 
We will shortly be getting signals from the swimmers. They 

have not completely retracted the HF antennas (garble) 

with the Astronauts (garble). 

This is .... It looks like the port hatch is completely 
opened now and Lovell is getting out of the port side, the 
sw imm ers are hovering around, (garble) he has inflated his 

(garble). It looks like his is in place (garble).... 

Capt. Lovell is in the rubber boat (garble). No difficulty 

encountered at this time. The swimmers are beginning to 

put the equipment back in and getting ready to close the 

port hatch. No, they are not going to close the port 

hatch, the main (garble).... We have encountered no difficulty 

what so ever at this time. Major Aldrin is completely out of 

the spacecraft (garble) in the rubber boat. Now it looks like 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:33 p.m. TAPE 300 

PAGE 3 



we are going to have to get the boat separated from the 

spacecraft in order to get away from that ... antenna. 

(garble). And both are going to help the helicopter get 

the true hold. Astronauts are motioning and talking together. 

The swimmers are in the boat with them holding them on . . 

(garble). The swimmer is attempting to close the hatch 

and having a little difficulty with it. The astronauts 

are looking worried about closing the hatch and they have 

got the ... wrench out and getting ready to close it. 

There is no difficulty at this time, the astronauts 

appear to be well and look good (garble) This is kOl 

reporting the Gemini 12. They are having a little trouble 

getting the top hatch closed, now they have got it and 

they are going to lock it tight. The astronauts appear 

to be riding comfortably in the boat. The hatch is now 

closed and the floatation collar is inflated. . Major 

Aldrin gave a big wave to the helicopter and he appears 

to be in good spirits. The crew is now shaking hands with 

the astronauts, waiting for the pickup (garble)... 

They are going to open the hatch again for some reason. 

Yes they are -and they have got ... they have opened the 
Cpt. Lovell 

hatch again, /l. ...is going back in. I assume he is going 
to retract the antenna. Capt. Lovell is now back in the 
spacecraft and we expect the antenna to go down momentarily. 
The Wasp is circling the spacecraft a radius of about one-half 
mile, (garble). The Wasp is now directly West of the space- 
craft and circling waiting for the pickup of the astronauts 



GEMINI 12 MISSION COMMENTARY , H/15/66, 1:33 p.m. TAPE 300 

PAGE k 



so they can pick up the spacecraft. Capt. Lovell has gone 
back into the spacecraft and the HF antenna is beginning to 
retract, (garble) the antenna is about four feet up and 
Lovell is sitting there in the open spacecraft putting it 
down. Okay, the HF antenna ^has now been completely retracted. 
And we commence helping Cpt. Lovell get back out of the 

spacecraft and that will be very shortly, (garble) 

waiting for the pickup. All three swimmers are standing 
by static electricity 



END OF TAPE. 



GEMINI 12 MISSION COMMENTARY, ll/l5/66, 1:U3 P. M. CST 

Tape 301, Page 1 

WASP All three swimmers are standing by ready to hoist - 

and the sling is now in the water to discharge the 
static electricity and .... is moving in all of the 
astronauts. There is the signal from the lead crew, 
number 1 Swim team is ready for the pickup. They'll 
move in all around the spacecraft and the sling is 

swinging in a little bit due to the whirling 

blades of the helicopter and the swimmers are going 
to grab the sling - Okay, they've got the sling now 
and they're putting it on Captain Lovell first. ; 
Captain Lovell will be the first one up and it's 
nil around him. Search 3 is maintaining a very good 
position and Captain Lovell is signalling he's ready 
to come up and there comes the astronaut. Captain 
Lovell is being hoisted just clear of the water now. 
Search 3 is doing a very good job of hoisting him up. 
He's about half way up holding on No diffi- 

culties at this time. Now the Astronaut Captain 

Lovell is almost up to the helicopter They've 

got him up to the edge of the floor and he's now 
inside the helicopter. He's out of the sling and 
they're lowering down now to pick up Major Aldrin. 
Captain Lovell is inside the helicopter. One astro- 
naut' recovered and the second astronaut ready to be 




V 

GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:^3 P. M. CST 

Tape 301, Page 2 

picked up. Major Aldrin is giving us the signal 

No difficulties at this time. Search 3 

has now moved in hack over the spacecraft to see 
the sling gets in the water to make sure there is 
no static electricity so the astronauts will not 
get shocked when they touch it. This is Photo 1 
reporting the Gemini 12 astronaut recovery. It 
is proceeding as planned. No difficulties what- 
soever at this time. The sling is now directly 
over the astronaut and is being lowered. The wind 
and the spray has pushed the sling away a little 
bit. One of the swimmers is retrieving it. They 
are bringing it right over to him. He now has the 

sling is giving; him the sling. He has the 

sling on completely; now is giving the signal to be 
pulled up. Search 3 is doing a very good job of 
hovering over the spacecraft. No difficulties 
encountered. There's the up signal from Major 
Aldrin and there goes Major Aldrin out of the 
little boat. He's being hoisted now. He's about 
one third of the way up. Search 3 has got the 
second astronaut and hoisting him now.He's one 
half of the way up. No difficulties at this time. 
The spacecraft is still floating normally. Major 



GEMINI 12 MISSION COMMENTARY, 11/15/66, 1:^3 P. M. CST 

Tape 301, Page 3 



\ 



WASP Aldrin is about two thirds of the way up approaching 

the cabin floor now. And he is being hoisted inside. 
Major Aldrin is now in the helicopter and they are 
all shaking hands and they are getting the Major 
out of the sling. This is Photo 1 over to Search 3- 

SEARCH 3 And they appear to be ready for the landing on 

the Wasp. The Wasp is only one half a mile from 
the recovery area and we'll be landing shortly 
aboard in about two minutes. This is Search 3, 
back to Photo 1 preparing to switch to Wasp .... 

PHOTO 1 Roger, this is Photo 1. Both the astronauts are 

abpard helicopter no. 66, designated Search 3 and 
are approaching the Wasp now for a .... landing. 
Search 3 and h - Search 3 and U will be landing 

immediate approach of the spacecraft. 

. . . .the signal will be that the doctor has also 
given the pilot in helicopter no. 66 the okay and 
the helicopter is approaching the Wasp. This is 
Photo 1 by .... power circuitry atop the 



END OF TAPE 



GEMINI 12 MISSION COMMENTARY, NOVEMBER 15, 1966, 2:01 pm CST 

TAPE 302, 
PAGE 1 

This is Gemini Control Houston. When Lovell and Aldrin 
stepped out on the deck of the carrier they got a tremendous 
ovation here in the Mission Control Center. The room was 
filled to over flowing and is still densely populated, by 
both NASA people and contractors. Among them Frank Cary 
from the Martin Company who has directed all of the Titan 
launches. We can also see a soft drink executive here in 
the person of John Glenn, a retired astronaut and Al Shepard, 
the Mission Director of course, Bill Schneider. Bill is 
still here, he is preparing to go to the Cape later this 
afternoon. Many handshakes and many cigars. We are planning 
to have a Press Conference here in Houston in about 15 
minutes, featuring the officials of the program. We'll 
continue coverage on the Agena operations as they go on later 
this afternoon. We would expect that coverage to continue 
another k hours. This is Gemini Control Houston. 
END OF GEMINI MISSIONS