Propulsion studies for advanced manned launch systems

The topics covered include the following: (1) the next manned space transportation system; (2) development of a new hydrogen booster engine (like the Space Transportation Booster Engine); (3) development of a new hydrogen engine (like the Space Transportation Main Engine); and (4) an increase in oxidizer to fuel ratio from the current Space Shuttle Main Engine level. This document is presented in viewgraph form.