The final newly manufactured segment specifically designed for Ares 1-X test rocket, the frustum, arrived at NASA Kennedy Space Center's Assembly and Refurbishment Facility on Friday. Looking somewhat like a giant funnel, the frustum's major function is to transition the primary flight loads from the upper stage to the first stage. Weighing in at approximately 13,000 pounds, the 10-foot-long frustum is composed of two aluminum rings that are attached to a truncated conic section. The large diameter of the cone is 18 feet, and the small diameter is 12 feet. The thickness of the cone is 1 1/4 inches. Ares 1-X is the test vehicle for Ares 1, which is part of the Constellation Program to return astronauts to the moon and beyond. Ares 1-X is targeted for launch in July 2009.