PROVIDE DEVELOPMENTAL HARDWARE AND TEST ARTICLES, AND MANUFACTURE AND ASSEMBLE ARES I UPPER STAGES. THE UPPER STAGE (US) ELEMENT IS AN INTEGRAL PART OF THE ARES I LAUNCH VEHICLE AND PROVIDES THE SECOND STAGE OF FLIGHT. THE US ELEMENT IS RESPONSIBLE FOR THE ROLL CONTROL DURING THE FIRST STAGE BURN AND SEPARATION; AND WILL PROVIDE THE GUIDANCE AND NAVIGATION, COMMAND AND DATA HANDLING, AND OTHER AVIONICS FUNCTIONS FOR THE ARES I DURING ALL PHASES OF THE ASCENT FLIGHT. THE US ELEMENT IS A NEW DE

National Aeronautics and Space Administration — National Aeronautics and Space Administration