Aircraft frequency adaptive modal suppression system

Details Aircraft frequency adaptive modal suppression system Aircraft frequency adaptive modal suppression system

1996-12-30

1999-01-19

Mojica, V. Lissi

Aeronautics and astronautics

Aircraft control

Automatic

244 75A, 701 10, B64C 1700, G05D 100

Patent

active

058606254

ABSTRACT:
An aircraft modal suppression system which recognizes that the frequency and phase of the body bending mode varies when the weight of the aircraft differs from the design gross weight. An active damper notch filter which is tabulated as a function of aircraft gross weight is utilized, thereby enabling not only the frequency, but also the width and depth of the notch filter to vary according to the gross weight of the aircraft.

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