184
184
Jun 2, 2011
06/11
by
Brown, James L
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eye 184
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A surface-imaging skin-friction instrument provides measurement of the wall shear-stress vector over a large surface region during a single wind tunnel test using an oil-film interference method. During a test, a camera captures images of the fringe pattern produced by illuminating an oil film with quasi-monochromatic light. By using a visual tracer in the oil, the surface streamlines can also be determined. Analysis of the fringe images using a Hilbert-transform-based technique determines the...
Topics: GALILEAN SATELLITES, EUROPA, CRATERING, GANYMEDE, IO, PLANETARY SURFACES
198
198
Jul 5, 2010
07/10
by
LANGEREUX, P
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eye 198
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FOUR CONTRACTS WERE AWARDED FOR THE ESTABLISHMENT OF A EUROPEAN EXPERIMENTAL REMOTE DETECTION PROGRAM THAT CAN BE UNDERTAKEN USING AIRBORNE RESOURCES. BEFORE BEGINNING SUCH A PROGRAM IT WILL BE NECESSARY TO ASCERTAIN THE USABLE MEANS AND THEIR CAPABILITIES. TWO OF THE CONTRACTORS WILL STUDY THE POSSIBLE USES OF RADIOTELEMETRY WITH MILLIMETRIC WAVES AND SIDE-LOOKING RADAR, AND THE OTHER TWO CONTRACTORS WILL CONDUCT AN INVESTIGATION TO FIND AN AIRCRAFT SUITABLE FOR INSTALLATION OF REMOTE...
Topics: HISTORIES, INTERPLANETARY COMMUNICATION, INTERPLANETARY FLIGHT, EXTRATERRESTRIAL LIFE, PLANETARY...
734
734
Jul 23, 2010
07/10
by
NON
texts
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This edition of the Microgravity Science and Applications (MSA) Bibliography is a compilation of Government reports, contractor reports, conference proceedings, and journal articles dealing with flight experiments utilizing a low gravity environment to elucidate and control various processes or with ground based activities that provide supporting research. It encompasses literature published but not cited in the 1984 Revision and literature which has been published in the past year....
Topics: PLANETARY GEOLOGY, PLANETOLOGY, SPACE EXPLORATION, COMPARISON, PLANETARY SURFACES, SOLAR SYSTEM
276
276
Jun 21, 2010
06/10
by
Brzuskiewicz, J.; Gilligan, J. E.; Yamate, G.; Zerlaut, G. A
texts
eye 276
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Theoretical models and spectral reflectance measurements of white pigmented, low solar absorptance coatings for spacecraft temperature control
Topics: ASTRONOMICAL PHOTOMETRY, JUPITER ATMOSPHERE, PHOTOGRAPHIC MEASUREMENT, PLANETARY SURFACES,...
229
229
May 31, 2011
05/11
by
Martin, Lynne; Orasanu, Judith; Villeda, Eri
texts
eye 229
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One way to enhance the effectiveness of Special Purpose Operational Training' (SPOT) debriefing sessions may be for instructors to make explicit connections between the Crew Resource Management (CRM) concepts a carrier advocates and the behaviors displayed by the crew in question. A tool listing key behaviors from the scenario was devised, accompanied by an instructors' training session in which links were made between the behaviors and the underlying CRM processes they reflect. The aim of the...
Topics: NUCLEAR ELECTRIC PROPULSION, MOLTEN SALTS, REACTOR TECHNOLOGY, PLANETARY SURFACES, LIQUID METALS
362
362
Jul 11, 2010
07/10
by
Armstrong, W. H.; Brogren, E. W
texts
eye 362
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A study was performed to analytically determine the cyclic thermomechanical behavior and fatigue life of three configurations of a Plug Nozzle Thrust Chamber. This thrust chamber is a test model which represents the current trend in nozzle design calling for high performance coupled with weight and volume limitations as well as extended life for reusability. The study involved the use of different materials and material combinations to evaluate their application to the problem of low-cycle...
Topics: U.S.S.R. SPACE PROGRAM, VENERA SATELLITES, VENUS (PLANET), DATA TRANSMISSION, PLANETARY SURFACES
305
305
Jul 11, 2010
07/10
by
Budinger, T. F.; Tobias, C. A.; Huesman, R. H.; Upham, F. T.; Wieskamp, T. F.; Schott, J. U.; Schopper, E
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eye 305
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The frequency, character, latitudinal dependence, and identity of cosmic particles that cause the light flash phenomenon were investigated with emphasis on radiation hazards of long term earth orbiting and interplanetary missions. Measurement of the characteristics of the cosmic particle environment in the vicinity of the eye, measurement of dark adaptation, and continuous onboard accumulation of the light flash observations from astronauts and particle detectors throughout one complete orbit...
Topics: CONFERENCES, IDAHO, PLANETARY SURFACES, VOLCANOLOGY, EVOLUTION (DEVELOPMENT), GEOLOGY, ORIGINS,...
214
214
Jun 21, 2010
06/10
by
Parmley, R. T
texts
eye 214
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Development and characteristics of protective coatings for spacecraft
Topics: CIRCULAR CONES, EARTH PLANETARY STRUCTURE, METEORITE CRATERS, PLANETARY SURFACES, NUCLEAR EXPLOSIONS
233
233
Jul 11, 2010
07/10
by
SHATALOV, V. A
texts
eye 233
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THE PLANNED DOCKING OF SOYUZ WITH APOLLO IN SPACE IS DISCUSSED. THE EXPERIMENTS TO BE PERFORMED ARE CONSIDERED ALONG WITH THE PROBLEMS OF THE LANGUAGE BARRIER BETWEEN THE COSMONAUTS AND ASTRONAUTS.
Topics: PLANETARY SURFACES, SPACE PROBES, VENUS ATMOSPHERE, MECHANICAL PROPERTIES, POROSITY, SOILS,...
332
332
Jul 6, 2010
07/10
by
Orton, G. F.; Schweickert, T. F
texts
eye 332
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The analyses and rationale used to develop requirements for the oxygen-hydrogen auxiliary propulsion systems to be used with the space shuttle are presented. The requirements apply to a fully reusable space shuttle vehicle system using internal, reusable main engine propellant tanks in both the orbiter and booster stages. Requirements of principal interest are engine thrust, number of engines, maximum system thrust, total impulse, and total impulse expenditure history.
Topics: MARS (PLANET), OPTICAL PROPERTIES, PLANETARY SURFACES, NUMERICAL ANALYSIS, PHOTOELECTRIC EFFECT,...
314
314
Jun 27, 2010
06/10
by
LOMNEV, S. P
texts
eye 314
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PARTICLE EQUATIONS OF MOTION FOR SOLVING PROBLEMS IN ELECTRODYNAMICS, GAS DYNAMICS, HYDRODYNAMICS, AND SOLID STATE PHYSICS
Topics: BACKSCATTERING, DIAGRAMS, PLANETARY SURFACES, RADIO WAVES, VENUS (PLANET), COMPUTER PROGRAMS,...
256
256
texts
eye 256
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The results of research efforts to develop an optimized nickel cobalt coating suitable as a recording medium are outlined. The coating is to be used directly on a BeCu helical coil substrate of a helical coil NASA recorder. Specifically, efforts were made to: optimize the coating thickness; establish processes and techniques adaptable for the production of finalized plated helical coils; design and fabricate the equipment required for production and testing of the coils; and deliver finalized...
Topics: ASTROPHYSICS, PLANETARY ENVIRONMENTS, ASTRONOMY, PLANETARY COMPOSITION, PLANETARY RADIATION,...
278
278
May 23, 2011
05/11
by
Guo, W. P.; Wu, S. T.; Tandberg-Hanssen, E
texts
eye 278
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We have investigated the dynamic response of a coronal helmet streamer to the emergence from below of a current with its magnetic field in a direction opposite to the overlying streamer field. Once the emerging current moves into the closed region of the streamer, a current sheet forms between the emerging field and the streamer field, because the preexisting field and the newly emerging field have opposite polarities. Thus magnetic reconnection will occur at the flanks of the emerged structure...
Topics: CHARON, COMPOSITION (PROPERTY), ICE, PLUTO (PLANET), PLANETARY SURFACES, ALBEDO, INFRARED SPECTRA,...
181
181
Jun 21, 2010
06/10
by
NON
texts
eye 181
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Dry heat destruction rates of bacillus spores as function of relative humidity at 110 C
Topics: ASTRONOMICAL PHOTOMETRY, JUPITER (PLANET), OPTICAL PROPERTIES, PLANETARY SURFACES, BRIGHTNESS...
383
383
May 6, 2010
05/10
by
Rea, D. G.; Welch, W. J
texts
eye 383
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Reflection and emission of electromagnetic radiation by planetary surfaces and clouds
Topics: ELECTROMAGNETIC RADIATION, ELECTROMAGNETISM, PLANETARY ATMOSPHERES, PLANETARY SURFACES,...
297
297
Jul 6, 2010
07/10
by
Conrath, B. J
texts
eye 297
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The Backus-Gilbert theory, originally developed for analysis of inversion problems associated with the physics of the solid earth, was applied to the problem of the vertical sounding of the atmosphere by means of remote radiation measurements. An application was made to spectral intervals 2.8/cm wide in the 667/cm band CO2, and tradeoff curves are presented which quantitatively define the relationship between intrinsic vertical resolution and random error in temperature profile estimates. It is...
Topics: ASTRONOMY, PLANETARY ATMOSPHERES, PLANETARY ENVIRONMENTS, PLANETARY SURFACES, EXTRATERRESTRIAL...
281
281
Jul 11, 2010
07/10
by
Walmer, M. S
texts
eye 281
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Questions concerning material corrosion, band lubrication, proper band attachment, endless band production rolling, and electrodeposits in rolamite devices are answered. Failure modes of rolamite bands in space applications are also considered.
Topics: PLANETARY SURFACES, TELEVISION CAMERAS, VENERA SATELLITES, VENUS (PLANET), ASTRONOMICAL...
Technological requirements of a planetary return sample mission were studied. The state-of-the-art for problems unique to this class of missions was assessed and technological gaps were identified. The problem areas where significant advancement of the state-of-the-art is required are: life support for the exobiota during the return trip and within the Planetary Receiving Laboratory (PRL); biohazard assessment and control technology; and quarantine qualified handling and experimentation methods...
Topics: NASA Technical Reports Server (NTRS), PLANETARY SURFACES, SAMPLES, TECHNOLOGY ASSESSMENT,...
3,029
3.0K
Jul 11, 2010
07/10
by
NON
texts
eye 3,029
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The dynamic structural analysis of rotary winged aircraft is reported, considering helicopter vibration and loads.
Topics: MISSION PLANNING, RADAR MAPS, VENUS (PLANET), AIRBORNE RADAR, PHOTOGRAPHY, PLANETARY SURFACES,...
532
532
Jul 6, 2010
07/10
by
Neuenschwander, W. E.; Schurr, G. G
texts
eye 532
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No Abstract Available
Topics: PLANETARY SURFACES, PLANETARY TEMPERATURE, GRAVITATIONAL EFFECTS, PLANETARY ATMOSPHERES, PLANETARY...
243
243
Jun 13, 2011
06/11
by
NON
texts
eye 243
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The Environmental Research Aircraft and Sensor Technology (ERAST) Alliance was created in 1994 and operated for 9 years as a NASA-sponsored coalition of 28 members from small companies, government, universities, and nonprofit organizations. ERAST s goal was to foster development of remotely piloted aircraft technology for scientific, humanitarian, and commercial purposes. Some of the aircraft in the ERAST Alliance were intended to fly unmanned at high altitudes for days at a time, and flying...
Topics: LASER ALTIMETERS, MESSENGER (SPACECRAFT), MERCURY SURFACE, GEOCHEMISTRY, PLANETARY SURFACES,...
198
198
Jun 15, 2011
06/11
by
Barten, H. J
texts
eye 198
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The verification of the nodal averaging method for generating automated finite triangular element grids was demonstrated. This was accomplished with a six node averaging program (SNAP) which was placed on an IBM 2250 vector graphics scope terminal. The advantage of this method is that it is unnecessary to program time consuming geometric division and transition algorithms.
Topics: VENERA SATELLITES, VENUS (PLANET), PLANETARY COMPOSITION, PLANETARY SURFACES, SPACE EXPLORATION,...
384
384
May 28, 2011
05/11
by
Young, Archi
texts
eye 384
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The determination of orbital window characteristics is of major importance in the analysis of human interplanetary missions and systems. The orbital launch window characteristics are directly involved in the selection of mission trajectories, the development of orbit operational concepts, and the design of orbital launch systems. The orbital launch window problem arises because of the dynamic nature of the relative geometry between outgoing (departure) asymptote of the hyperbolic escape...
Topics: PLANETARY ENVIRONMENTS, ROVING VEHICLES, PLANETARY LANDING, PLANETARY SURFACES, RESEARCH VEHICLES,...
246
246
Jun 9, 2011
06/11
by
Mukkamala, Ravi; Agarwal, Neha; Kumar, Pramod; Sundaram, Parthiba
texts
eye 246
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The HUMS automation system automates the design of HUMS architectures. The automated design process involves selection of solutions from a large space of designs as well as pure synthesis of designs. Hence the whole objective is to efficiently search for or synthesize designs or parts of designs in the database and to integrate them to form the entire system design. The automation system adopts two approaches in order to produce the designs: (a) Bottom-up approach and (b) Top down approach....
Topics: AUTOMATIC CONTROL, MARKOV PROCESSES, ALGORITHMS, ROVING VEHICLES, SCHEDULING, POLICIES, PLANETARY...
Planetary exploration has provided a torrent of discoveries and a recognition that planets are not inert objects. This expanded view has led to the notion of comparative planetology, in which the differences and similarities among planetary objects are assessed. Solar system exploration is undergoing a change from an era of reconnaissance to one of intensive exploration and focused study. Analyses of planetary surfaces are playing a key role in this transition, especially as attention is...
Topics: NASA Technical Reports Server (NTRS), PLANETARY GEOLOGY, PLANETOLOGY, SPACE EXPLORATION,...
High energy power and propulsion capability roadmap - general background and introduction. Advanced telescopes and observatories and scientific instruments and sensors capability roadmaps - general background and introduction. Space communications capability roadmap interim review. Robotic access to planetary surface capability roadmap. Human health and support systems capability roadmap progress review.
Topics: NASA Technical Reports Server (NTRS), SPACE COMMUNICATION, SUPPORT SYSTEMS, PLANETARY SURFACES,...
290
290
Jul 6, 2010
07/10
by
BECQUEREL, J.; KAMERLINGH ONNES, H.; DEHAAS, W. J
texts
eye 290
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USING A CRYOSTAT WHOSE THREE TUBES WERE FILLED, RESPECTIVELY, WITH HELIUM, HYDROGEN, AND NITROGEN IN LIQUID FORM, A SPECTROGRAPHIC STUDY WAS CONDUCTED OF CERTAIN RARE EARTH CRYSTALS, TAKING INTO ACCOUNT THE PARTICULAR EFFECTS PRODUCED BY A TEMPERATURE OF 4.2 K (LIQUID HELIUM). AT THAT TEMPERATURE, NOTABLY FOR ZENOTINE, STRONG DISSYMETRIES APPEARED IN THE SPECTRA FOR INVERSE CIRCULAR VIBRATION. AS A RESULT IT WAS CONCLUDE THAT, AT VERY LOW TEMPERATURES, THE RULE BY WHICH MAGNETIC INFLUENCE UPON...
Topics: COMPUTER TECHNIQUES, INTERPLANETARY MEDIUM, PLANETARY SURFACES, RADAR, RADIO ASTRONOMY, LUNAR...
326
326
Jun 21, 2010
06/10
by
NON
texts
eye 326
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Hollow cathode operation and plasma discharge in mercury ion engine, potential distribution of glow discharge, and liquid metal MHD power conversion
Topics: ATMOSPHERIC ENTRY, COMPUTERIZED SIMULATION, LANDING LOADS, LUNAR SOIL, VENUS ATMOSPHERE, HEAT...
Through a NASA Seed Fund partnership with DEM Solutions Inc., of Lebanon, New Hampshire, scientists at Kennedy Space Center refined existing software to study the electrostatic phenomena of granular and bulk materials as they apply to planetary surfaces. The software, EDEM, allows users to import particles and obtain accurate representations of their shapes for modeling purposes, such as simulating bulk solids behavior, and was enhanced to be able to more accurately model fine, abrasive,...
Topics: NASA Technical Reports Server (NTRS), GRANULAR MATERIALS, ABRASIVES, ELECTROSTATICS, PLANETARY...
452
452
texts
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Papers presented to the symposium on ERTS-1 are reported. The performance of sensors and systems, and applications of ERTS-1 imagery are discussed.
Topics: ASTRONOMICAL SPECTROSCOPY, PLANETARY ATMOSPHERES, ULTRAVIOLET ABSORPTION, ASTRONOMICAL...
A set of robotic access to planetary surfaces capability developments and supporting infrastructure have been identified. Reference mission pulls derived from ongoing strategic planning. Capability pushes to enable broader mission considerations. Facility and flight test capability needs. Those developments have been described to the level of detail needed for high-level planning. Content and approach. Readiness and metrics. Rough schedule and cost. Connectivity to mission concepts.
Topics: NASA Technical Reports Server (NTRS), ROBOTICS, SCHEDULES, FLIGHT TESTS, MANAGEMENT PLANNING,...
192
192
Jul 10, 2010
07/10
by
SOKOLOV, N. Y
texts
eye 192
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EFFECTS OF HYPODYNAMIC CONDITIONS ON THE ARTERIAL BED IN THE MUSCLES AND ADJACENT STRUCTURES OF PELVIC EXTREMITIES IN THE RABBIT WERE INVESTIGATED. ANATOMICAL METHODS OF INVESTIGATION REVEALED THAT HYPODYNAMIC CONDITIONS PRODUCED MORPHOLOGICAL TRANSFORMATIONS IN INTRAORGANIC ARTERIAL SYSTEM IN THE MUSCLES, FASCIA AND ADIPOSE CELLULAR TISSUE OF THE IMMOBILIZED EXTREMITY. THESE CHANGES PROVED TO BE STABLE AND RETAINED DURING 6 MONTHS.
Topics: PLANETARY SURFACES, VENUS ATMOSPHERE, VENUS CLOUDS, PLANETARY MAGNETIC FIELDS, PLANETARY MASS,...
408
408
May 31, 2011
05/11
by
Povinelli, Louis A.; Yungster, Shay
texts
eye 408
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This paper presents the results of a thermodynamic cycle analysis of a pulse detonation engine (PDE) using a hydrogen-air mixture at static conditions. The cycle performance results, namely the specific thrust, fuel consumption and impulse are compared to a single cycle CFD analysis for a detonation tube which considers finite rate chemistry. The differences in the impulse values were indicative of the additional performance potential attainable in a PDE.
Topics: ALGORITHMS, COMPUTER PROGRAMS, DINING PHILOSOPHERS PROBLEM, DETECTION, ROVING VEHICLES, PLANETARY...
Experimental finding is that mass absorption coefficient is independent of frequency but highly dependent on moisture content; effective conductivity increases with frequency, and low tangent is independent of frequency. Computed values of electrical properties are in rough numerical agreement with extrapolated laboratory values on other silicate materials.
Topics: NASA Technical Reports Server (NTRS), ABSORPTIVITY, MICROWAVE ATTENUATION, PLANETARY SURFACES,...
162
162
Jun 21, 2010
06/10
by
Craven, C. W.; Sherry, E. J.; Stern, J. A
texts
eye 162
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Spacecraft contamination preliminary quarantine analysis for possible 1972 Mariner Venus probe
Topics: COVARIANCE, RADAR ECHOES, CRATERS, ELEVATION, PLANETARY SURFACES, FLUX DENSITY, LUNAR MARIA,...
438
438
May 23, 2011
05/11
by
NON
texts
eye 438
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This conference publication includes papers and abstracts presented at the Flight Mechanics Symposium. This symposium featured technical papers on a wide range of issues related to orbit-attitude prediction, determination, and control; attitude sensor calibration; attitude determination error analysis; attitude dynamics; and orbit decay and maneuver strategy. Government, industry, and the academic community participated in the preparation and presentation of these papers.
Topics: IMPACT MELTS, GRAVITATION, ENTHALPY, PLANETARY SURFACES, THICKNESS, MELTING, CRATERS, DIAMETERS,...
A subsurface explorer (SSX) for exploring beneath the terrestrial surface of planetary bodies such as the Earth, Mars, or comets. This exploration activity utilizes appropriate sensors and instrument to evaluate the composition, structure, mineralogy and possibly biology of the subsurface medium, as well as perhaps the ability to return samples of that medium back to the surface. The vehicle comprises an elongated skin or body having a front end and a rear end, with a nose piece at the front...
Topics: NASA Technical Reports Server (NTRS), COMETS, TERRESTRIAL PLANETS, BORING MACHINES, PLANETARY...
167
167
May 23, 2011
05/11
by
Goldmeer, Jeffrey S.; Yang, Chin-Tien; Urban, David L.; Tien, James S
texts
eye 167
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The combustion and extinction behavior of a solid polymethyl methacrylate (PMMA) cylinder in a low speed flow are examined both theoretically and experimentally.
Topics: PLANETARY SURFACES, SCALING LAWS, TRAVELING IONOSPHERIC DISTURBANCES, CRATERS, IMPACT ACCELERATION,...
A planetary rover must be able to identify states where it should stop or change its plan. With limited and infrequent communication from ground, the rover must recognize states accurately. However, the sensor data is inherently noisy, so identifying the temporal patterns of data that correspond to interesting or important states becomes a complex problem. In this paper, we present an approach to state identification using second-order Hidden Markov Models. Models are trained automatically on a...
Topics: NASA Technical Reports Server (NTRS), EDUCATION, ROVING VEHICLES, PLANETARY SURFACES, IDENTIFYING,...
434
434
Jul 11, 2010
07/10
by
Luers, J. K
texts
eye 434
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The feasibility of instrumenting the inflatable passive sphere (presently used to provide upper atmosphere density measurements) with miniaturized thermistors, pressure transducers, and accelerometers was analyzed. Data from the sensors must be transmitted by an onboard telemetry system to a ground receiving station. To assure a sufficiently slow fall velocity for the sphere the additional mass of the sensor and telemetry hardware must be less than 100 grams. Other constraints that must be...
Topics: PLANETARY ENVIRONMENTS, VENUS (PLANET), PLANETARY IONOSPHERES, PLANETARY ROTATION, PLANETARY...
The planetary observations presented are divided into three parts: (1) infrared photometry at all wavelengths accessible from the ground; (2) high resolution infrared mapping of Jupiter with special emphasis at 5 microns; and (3) extensive infrared observations of Comet Kohoutek. Results are briefly summarized.
Topics: NASA Technical Reports Server (NTRS), INFRARED PHOTOGRAPHY, PLANETS, SPACE EXPLORATION, KOHOUTEK...
311
311
May 6, 2010
05/10
by
Vishniac, W
texts
eye 311
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Extraterrestrial life detector, and automatic paper chromatography device for analysis of soluble constituents of planetary soil
Topics: EXTRATERRESTRIAL LIFE, SOIL, LIFE DETECTORS, PAPER CHROMATOGRAPHY, PLANETARY SURFACES, SOILS,...
Crater counts on Rhea were completed, to be compared and combined with independent counts by Steve Squyres; the material is now being integrated into a study of cratering on Rhea and other Saturn satellites by Squyres, Lissauer, and Hartmann. Special attention is being paid to lighting and other effects on the apparent changes in crater density from one region to another. An earlier proposal by the author on crater density was further tested. Brief preliminary results are given.
Topics: NASA Technical Reports Server (NTRS), DENSITY DISTRIBUTION, PROJECTILE CRATERING, RHEA (ASTRONOMY),...
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944
Jun 18, 2010
06/10
by
NON
texts
eye 944
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Gyrocompassing with sensors or inertial platforms for use on planetary surface or in free orbital flight
Topics: FREE FLIGHT, PLANETARY SURFACE, SENSOR, GYROCOMPASSES, INERTIAL PLATFORMS, PLANETARY SURFACES,...
241
241
Jun 3, 2011
06/11
by
Ritorena, Stephane; Siegel, David A.; Morel, Andr
texts
eye 241
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The objective of the program is to develop and validate a procedure for ocean color data merging, which is one of the major goals of the SIMBIOS project. As part of the SIMBIOS Program, we have developed a merging method for ocean color data. Conversely to other methods our approach does not combine end-products like the subsurface chlorophyll concentration (chl) from different sensors to generate a unified product. Instead, our procedure uses the normalized water-leaving radiances L((sub...
Topics: COMMUNICATION NETWORKS, SPACE EXPLORATION, SPACE MISSIONS, DEPLOYMENT, EVALUATION, FIELD TESTS,...
424
424
May 24, 2011
05/11
by
Storms, Bruce L.; Ross, James C
texts
eye 424
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The results of a wind-tunnel test are presented for a two-dimensional NASA 63(sub 2)-215 Mod B airfoil with a 30% chord single-slotted flap. The use of lift-enhancing tabs (similar to Gurney flaps) on the lower surface near the trailing edge of both elements was investigated on four nap configurations. A combination of vortex generators on the flap and lift-enhancing tabs was also investigated. Measurements of surface-pressure distributions and wake profiles were used to determine the...
Topics: MERCURY ATMOSPHERE, ATMOSPHERIC CHEMISTRY, PLANETARY SURFACES, EMISSION SPECTRA, POTASSIUM, SODIUM,...
The New Approach to Self-Achievement Program is designed to target rising seventh, eighth, and ninth grade students who require assistance in refining their mathematical skills, science awareness and knowledge, and test taking strategies. During the six week duration of the program, students are challenged in these areas through the application of robotic and aeronautic projects which encourage the students to practically apply their mathematical and science awareness accordingly. The first...
Topics: NASA Technical Reports Server (NTRS), PLANETARY SURFACES, ROBOTICS, MARS (PLANET), DATA BASES,...
One method for classifying natural fracture systems is by fracture genesis. This approach involves the physics of the formation process, and it has been used most frequently in attempts to predict subsurface fractures and petroleum reservoir productivity. This classification system can also be applied to larger fracture systems on any planetary surface. One problem in applying this classification system to planetary surfaces is that it was developed for ralatively small-scale fractures that...
Topics: NASA Technical Reports Server (NTRS), CLASSIFICATIONS, FRACTURING, MARS SURFACE, PLANETARY...
Abstracts of reports which summarize work conducted by Planetology Program Principal Investigators are presented. Full reports of selected abstracts were presented to the annual meeting of Planetology Program Principal Investigators at the Center for Astrogeology, U.S. Geological Survey, Flagstaff, Arizona, March 8, 9, 19, 1976.
Topics: NASA Technical Reports Server (NTRS), GEOLOGY, GEOPHYSICS, PLANETOLOGY, SOLAR SYSTEM, ASTEROIDS,...
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1.5K
May 23, 2011
05/11
by
NON
texts
eye 1,455
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A technical symposium, aircraft display dedication, and pilots' panel discussion were held on May 27, 1992. to commemorate the 20th anniversary of the first flights of the F-8 Digital Fly-By-Wire (DFBW) and Supercritical Wing (SCW) research aircraft. The symposium featured technical presentations by former key government and industry participants in the advocacy, design, aircraft modification, and flight research program activities. The DFBW and SCW technical contributions are cited. A...
Topics: PLANETARY GEOLOGY, REMOTE SENSING, PLANETARY SURFACES, GEOPHYSICS, SPACE EXPLORATION, SOLAR SYSTEM,...
