+ Visit NASA.gov + Contact NASA   + Home Collection > NASA  Author > Senneff, J. M.  NASA Center > NASA (non Center Specific)  Publication Year > 1971-1980 > 1975  Subject > S-U > Spacecraft Propulsion And Power  Availability Options > Online > PDF  Item/Media Type > NASA Report > Contractor Report (CR)  Item/Media Type > Technical Report  Note: Start a new navigation search by selecting a link above     Previous Record | Next Record + Back to Results   + Printer Friendly Title: Space shuttle orbit maneuvering engine reusable thrust chamber program Author(s): Senneff, J. M. Abstract: Reusable thrust chamber and injector concepts were evaluated for the space shuttle orbit maneuvering engine (OME). Parametric engine calculations were carried out by computer program for N2O4/amine, LOX/amine and LOX/hydrocarbon propellant combinations for engines incorporating regenerative cooled and insulated columbium thrust chambers. The calculation methods are described including the fuel vortex film cooling method of combustion gas temperature control, and performance prediction. A method of acceptance of a regeneratively cooled heat rejection reduction using a silicone oil additive was also demonstrated by heated tube heat transfer testing. Regeneratively cooled thrust chamber operation was also demonstrated where the injector was characterized for the OME application with a channel wall regenerative thrust chamber. Bomb stability testing of the demonstration chambers/injectors demonstrated recovery for the nominal design of acoustic cavities. Cavity geometry changes were also evaluated to assess their damping margin. Performance and combustion stability was demonstrated of the originally developed 10 inch diameter combustion pattern operating in an 8 inch diameter thrust chamber. NASA Center: NASA (non Center Specific) Publication Date: May 1, 1975 Document Source: CASI Online Source: View PDF File Document ID: 19760007104 Accession ID: 76N14192 Publication Information: Number of Pages = 386 Report Number: BAC-8693-950001; NASA-CR-144632 Contract-Grant-Task Number: NAS9-12803 Price Code: A17 Keywords: ORBIT MANEUVERING ENGINE (SPACE SHUTTLE); THRUST CHAMBERS; COMBUSTION STABILITY; COOLING SYSTEMS; DESIGN ANALYSIS; ENGINE DESIGN; PERFORMANCE PREDICTION; Accessibility: Unclassified; No Copyright; Unlimited; Publicly available; Final Report Updated/Added to NTRS: 2007-10-23 + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007