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16 April 1998 Uncertainty models and associated trade-offs for wing/store flutter suppression
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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