Development Status of a 50k LOX/Hydrogen Upper Stage Demonstrator
PRATT AND WHITNEY WEST PALM BEACH FL
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This paper discusses design and systems integration status of a 50,000 pound 222.4 kN thrust OxygenHydrogen Upper Stage Engine Demonstrator USD being created by Pratt Whitney Liquid Space Propulsion under contract for the United States Air Force Research Laboratory AFRL to support the Integrated High Payoff Rocket Propulsion Technology IHPRPT program. The objective of this program is to integrate advanced technology components into an expander cycle engine configuration and demonstrate a 1 increase in specific impulse, a 30 increase in engine thrust-to-weight, a 25 reduction in failures per 1000 uses, a 15 reduction in required support costs, and a 15 reduction in hardware costs relative to current state-of-the-art levels. Scheduled to be the first of the IHPRPT program engine demonstrators, it is scheduled to be test fired in late 2000 and demonstrate a chamber pressure Pc capability of 1375 psia 9.48 MPa. This integrated 50k LOXLH2 engine demonstrator will be used to evaluate individual component technologies as well as the system level mechanical, structural and thermodynamic interactions.
- Liquid Propellant Rocket Engines