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Record Details

Record 26 of 13948
Navier-Stokes simulations of Orbiter aerodynamic characteristics including pitch trim and bodyflap
Author and Affiliation:
Weilmuenster, K. James(NASA Langley Research Center, Hampton, VA, United States)
Gnoffo, Peter A.(NASA Langley Research Center, Hampton, VA, United States)
Greene, Francis A.(NASA Langley Research Center, Hampton, VA, United States)
Abstract: An analysis of the longitudinal aerodynamics of the shuttle orbiter in the hypersonic flight regime is made through the use of computational fluid dynamics. Particular attention is given to establishing the cause of the 'pitching moment anomaly,' which occurred on the orbiter's first flight, and to computing the aerodynamics of a complete orbiter configuration at flight conditions. Data from ground-based facilities as well as orbiter flight data are used to validate the computed results. Analysis shows that the pitching moment anomaly is a real-gas chemistry effect that was not simulated in ground-based facilities, which used air as a test gas. Computed flight aerodynamics for the orbiter are within 5% of the measured flight values and trim bodyflap deflections are predicted to within 10%.
Publication Date: May 01, 1994
Document ID:
19950037611
(Acquired Dec 28, 1995)
Accession Number: 95A69210
Subject Category: SPACE TRANSPORTATION
Document Type: Journal Article
Publication Information: Journal of Spacecraft and Rockets (ISSN 0022-4650); 31; 3; p. 355-366
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AERODYNAMIC BALANCE; COMPUTATIONAL FLUID DYNAMICS; FLAPS (CONTROL SURFACES); HYPERSONIC FLIGHT; LONGITUDINAL STABILITY; PITCHING MOMENTS; SPACE SHUTTLE ORBITERS; AEROTHERMOCHEMISTRY; FLIGHT CONDITIONS; NAVIER-STOKES EQUATION; REAL GASES
Imprint And Other Notes: Journal of Spacecraft and Rockets vol. 31, no. 3 p. 355-366 May-June 1994
Availability Source: Other Sources
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