Abstract
A systematic parametric investigation of the flutter behaviour of the annular wing in inviscid incompressible flow is performed. First, the equations of motion are set up and the aerodynamic model for the calculation of the motion-induced unsteady airloads in terms of related aerodynamic coefficients, applying a higher-order panel technique, is explained. The aeroelastic stability equations are then derived in nondimensional form and the procedure used for the numerical solution of these equations is outlined. Numerical results are presented for a variety of systematic parameter variations, and overall trends in the aeroelastic stability of the annular wing and the effects of the dominant parameters are pointed out.
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