Aircraft frequency adaptive modal suppression system

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

1996-10-08

1998-11-10

Mojica, Virna Lissi

Aeronautics and astronautics

Aircraft control

244177, 244195, 244235, B64C 1316, G05D 108

Patent

active

058331735

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.

REFERENCES:
patent: 4034936 (1977-07-01), Eriksson et al.
patent: 4725020 (1988-02-01), Whitener
patent: 4825375 (1989-04-01), Nadkarni et al.
patent: 5072893 (1991-12-01), Chakravarty et al.
patent: 5375794 (1994-12-01), Bleeg
patent: 5452865 (1995-09-01), Tran et al.

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