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Active Suppression Of Vibrations On Aircraft StructuresMethod of active suppression of nonlinear and nonstationary vibrations developed to reduce sonic fatigue and interior noise in high-speed aircraft. Structure of aircraft exhibits periodic, chaotic, and random vibrations when forced by high-intensity sound from jet engines, shock waves, turbulence, and separated flows. Method of suppressing vibrations involves feedback control: Strain gauges or other sensors mounted in paths of propagation of vibrations on structure sense vibrations; outputs of sensors processed into control signal applied to actuator mounted on structure, inducing compensatory forces.
Document ID
19950065300
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Maestrello, Lucio
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 17, 2013
Publication Date
March 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 3
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
LAR-15071
Accession Number
95B10141
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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