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Estimation of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination From Wind Tunnel DataThis paper presents an initial step toward model identification from wind tunnel data for an airliner configuration. Two approaches to modeling a transport configuration are considered and applied to both steady and large-amplitude forced-oscillation wind tunnel data taken over a wide range of angles of attack. Only limited conclusions could be drawn from this initial data set. Although model estimated time histories of normal force and pitching moment agree reasonably well with the corresponding measured values, model damping parameters did not, for some cases, have values consistent with small amplitude oscillatory data. In addition, large parameter standard errors implied poor information content for model structure determination and parameter estimation. Further investigation of the modeling problem for more general aerodynamic models is recommended with close attention to experiment design for obtaining parameters with high accuracy.
Document ID
20060047570
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Murphy, Patrick C. (NASA Langley Research Center Hampton, VA, United States)
Klein, Vladislav (George Washington Univ. Hampton, VA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA Paper 2006-6154
Meeting Information
Meeting: AIAA Guidance, Navigation, and Control Conference and Exhibit
Location: Keystone, CO
Country: United States
Start Date: August 21, 2006
End Date: August 24, 2006
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 280-02-07
Distribution Limits
Public
Copyright
Public Use Permitted.

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