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Non-Toxic Orbital Maneuvering System Engine DevelopmentRecent results using the Aestus engine operated with LOx/ethanol propellant are presented. An experimental program at Rocketdyne Propulsion and Power is underway to adapt this engine for the Boeing Reusable Space Systems Division non-toxic Orbital Maneuvering System/Reaction control System (OMS/RCS) system. Daimler-Chrysler Aerospace designed the Aestus as an nitrogen tetroxide/monomethyl hydrazine (NTO/MMH) upper-stage engine for the Ariane 5. The non-toxic OMS/RCS system's preliminary design requires a LOx/ethanol (O2/C2H5OH) engine that operates with a mixture ratio of 1.8, a specific impulse of 323 seconds, and fits within the original OMS design envelope. This paper describes current efforts to meet these requirements including, investigating engine performance using LOx/ethanol, developing the en-ine system sizing package, and meeting the vehicle operation parameters. Data from hot-fire testing are also presented and discussed.
Document ID
19990062679
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Green, Christopher
(Boeing Co. Canoga Park, CA United States)
Claflin, Scott
(Boeing Co. Canoga Park, CA United States)
Maeding, Chris
(DaimlerChrysler Aerospace A.G. Munich, Germany)
Butas, John
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA Paper 99-2742
Meeting Information
Meeting: Joint Propulsion
Location: Los Angeles, CA
Country: United States
Start Date: June 20, 1999
End Date: June 24, 1999
Sponsors: American Society of Mechanical Engineers, American Inst. of Aeronautics and Astronautics, Society of Automotive Engineers, Inc., American Society for Electrical Engineers
Funding Number(s)
CONTRACT_GRANT: NCC8-148
Distribution Limits
Public
Copyright
Other

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