This paper presents a study into the occurrence of aeroelastic flutter in a high aspect ratio wing using numerical continuation and a geometrically nonlinear beam model. This beam model comprises a continuous, assumed-shape formulation and is coupled with strip theory aerodynamics. Out-of-plane, in-plane and torsional stiffness properties are varied and their influences on the flutter point are observed. A nonlinear lift curve is incorporated so as to illustrate the influence of stall effects. The occurrence of a subcritical Hopf bifurcation is also demonstrated, indicating the possibility of oscillation at airspeeds below the flutter velocity, given a sufficient wing perturbation.
|Title of host publication||5th Aircraft Structural Design Conference|
|Publication status||Published - 4 Oct 2016|