Method 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.
Active Suppression Of Vibrations On Aircraft Structures
NASA Tech Briefs ; 19 , 3
1995-03-01
Sonstige
Keine Angabe
Englisch
Active Suppression of Vibrations on Aircraft Structures
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