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Extraction of stability and control derivatives from orbiter flight dataThe Space Shuttle Orbiter has provided unique and important information on aircraft flight dynamics. This information has provided the opportunity to assess the flight-derived stability and control derivatives for maneuvering flight in the hypersonic regime. In the case of the Space Shuttle Orbiter, these derivatives are required to determine if certain configuration placards (limitations on the flight envelope) can be modified. These placards were determined on the basis of preflight predictions and the associated uncertainties. As flight-determined derivatives are obtained, the placards are reassessed, and some of them are removed or modified. Extraction of the stability and control derivatives was justified by operational considerations and not by research considerations. Using flight results to update the predicted database of the orbiter is one of the most completely documented processes for a flight vehicle. This process followed from the requirement for analysis of flight data for control system updates and for expansion of the operational flight envelope. These results show significant changes in many important stability and control derivatives from the preflight database. This paper presents some of the stability and control derivative results obtained from Space Shuttle flights. Some of the limitations of this information are also examined.
Document ID
19940006252
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Iliff, Kenneth W. (NASA Hugh L. Dryden Flight Research Facility Edwards, CA, United States)
Shafer, Mary F. (NASA Hugh L. Dryden Flight Research Facility Edwards, CA, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
H-1912
NASA-TM-4500
NAS 1.15:4500
Report Number: H-1912
Report Number: NASA-TM-4500
Report Number: NAS 1.15:4500
Meeting Information
Meeting: Orbiters Experiments (OEX) Aerothermodynamics Symposium
Location: Williamsburg, VA
Country: United States
Start Date: April 27, 1993
End Date: April 30, 1993
Accession Number
94N10707
Funding Number(s)
PROJECT: RTOP 505-68-50
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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