Use of linear and nonlinear vibration absorbers for buffet alleviation of twin-tailed fighter aircraft

Ayman A. El-Badawy; Ali H. Nayfeh

doi:10.1117/12.436493

21 August 2001 Use of linear and nonlinear vibration absorbers for buffet alleviation of twin-tailed fighter aircraft

Ayman A. El-Badawy, Ali H. Nayfeh

Proceedings Volume 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures; (2001) https://doi.org/10.1117/12.436493
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

We investigate theoretically and experimentally the performance of linear and nonlinear vibration absorbers to suppress high-amplitude vibrations of twin-tailed fighter aircraft when subjected to a primary resonance excitation. The tail section used in the experiments is a 1/16 dynamically scaled model fo the F-15 tail assembly. Both techniques (linear and nonlinear) are based on introducing an absorber and coupling it with the tails through a sensor and an actuator, where the control signals ae either linear or quadratic. For both cases, we develop the equations governing the response of the closed-loop system and use the method of multiple scales to obtain an approximate solution. We investigated both control strategies by studying their steady-state characteristics. In addition, we compare the power requirements of both techniques and show that the linear tuned vibration absorber uses less power than the nonlinear absorber.

Citation Download Citation

Ayman A. El-Badawy and Ali H. Nayfeh "Use of linear and nonlinear vibration absorbers for buffet alleviation of twin-tailed fighter aircraft", Proc. SPIE 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures, (21 August 2001); https://doi.org/10.1117/12.436493

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