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Multifunction tests of a frequency domain based flutter suppression systemThis paper describes the process of analysis, design, digital implementation and subsonic testing of an active controls flutter suppression system for a full span, free-to-roll wind-tunnel model of an advanced fighter concept. The design technique employed a frequency domain representation of the plant and used optimization techniques to generate a robust multi-input/multi-output controller. During testing in a fixed-in-roll configuration, simultaneous suppression of both symmetric and antisymmetric flutter was successfully demonstrated. For a free-to-roll configuration, symmetric flutter was suppressed to the limit of the tunnel test envelope. During aggressive rolling maneuvers above the open-loop flutter boundary, simultaneous flutter suppression and maneuver load control were demonstrated. Finally, the flutter suppression controller was reoptimized overnight during the test using combined experimental and analytical frequency domain data, resulting in improved stability robustness.
Document ID
19920053043
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Christhilf, David M.
(Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Adams, William M., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Aircraft Stability And Control
Report/Patent Number
AIAA PAPER 92-2096
Meeting Information
Meeting: AIAA Dynamics Specialists Conference
Location: Dallas, TX
Country: United States
Start Date: April 16, 1992
End Date: April 17, 1992
Accession Number
92A35667
Distribution Limits
Public
Copyright
Other

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