Subsonic flutter suppression using self-straining actuators. (English) Zbl 0981.74015

Summary: We present an analytical (rather than purely computational) study, using full continuum models of bending-torsion wing flutter in inviscid subsonic aerodynamics, and evaluate the performance of self-straining actuators for flutter suppression. A time domain analysis which uses the theory of semigroups of operators is employed to determine the root locus of aeroelastic modes and to give a precise operational definition of flutter speed. Numerical results are presented for Goland wing model with torsion mode flutter. The main result: while effective in increasing structure damping prior to flutter, self-straining controllers have little or no effect on the flutter speed.


74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
76G25 General aerodynamics and subsonic flows
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