Active suppression of an 'apparent shock induced instability'

Adams, W. M.; Tiffany, S. H.; Bardusch, R. E.

doi:10.2514/6.1987-881

28th Structures, Structural Dynamics and Materials Conference 1987

DOI: 10.2514/6.1987-881

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Active suppression of an 'apparent shock induced instability'

W. M. Adams

S. H. Tiffany

R. E. Bardusch

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1992

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Multifunction tests of a frequency domain based flutter suppression system

Christhilf¹,

Adams

1992

Dynamics Specialists Conference

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This 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 windtunnel 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 fixedin-roll configuration, simultaneous suppression of both symmetric and antisymmelric flutter was successfully demonstrated. For a free-lo-ro!l 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 robusmess.

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Multifunction tests of a frequency domain based flutter suppression system

Christhilf¹,

Adams

1992

Dynamics Specialists Conference

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show abstract

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Active suppression of an 'apparent shock induced instability'

Cited by 1 publication

References 4 publications

Multifunction tests of a frequency domain based flutter suppression system

Multifunction tests of a frequency domain based flutter suppression system

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