Uncertainty models and associated trade-offs for wing/store flutter suppression

Prasad V. N. Gade; Daniel J. Inman

doi:10.1117/12.305574

16 April 1998 Uncertainty models and associated trade-offs for wing/store flutter suppression

Prasad V. N. Gade, Daniel J. Inman

Proceedings Volume 3321, 1996 Symposium on Smart Materials, Structures, and MEMS; (1998) https://doi.org/10.1117/12.305574
Event: Smart Materials, Structures and MEMS, 1996, Bangalore, India

Abstract

An active decoupler pylon approach for wing/store flutter suppression is proposed which involves the use of a piezoceramic wafer strut as an actuator for isolating wing torsion modes from store pitch inertia effects. A two degree-of-freedom typical section of an airfoil is used to represent the structural model of the wing, while the circulatory incompressible aerodynamic loads are modeled using Jones' approximation to the Theodorsen function. The analytical model developed neglects store aerodynamics, aileron degree-of-freedom and other flutter critical flexible and rigid body moves. This paper presents some typical perturbation models used to represent such uncertainties and compares their robust stability margins obtained using controllers designed with Loop Transfer Recovery and H_(infinity ) control techniques. Singular value Bode plots are used to analyze the robust stability and nominal performance characteristics.

Citation Download Citation

Prasad V. N. Gade and Daniel J. Inman "Uncertainty models and associated trade-offs for wing/store flutter suppression", Proc. SPIE 3321, 1996 Symposium on Smart Materials, Structures, and MEMS, (16 April 1998); https://doi.org/10.1117/12.305574

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