Upper Stage Alternatives for the Shuttle Era

Describes various alternatives for upper stages for the U.S. Space Shuttle. Prepared by the National Aeronautics and Space Administration (NASA) and the Department of Defense (DOD). Compares the requirements for military and interplanetary missions. A report to Congress. Includes Centaur G (Shuttle Centaur) information, especially as compared to other stages. Concludes that Centaur is the best upper stage for the space shuttle.