Static Aeroelastic Effects on a Transonic Indicial Response Wing Flutter Calculation

摘要

The use of the indicial response method (IRM) or other similar methods such as the pulse transfer-function method have been frequently used to approximate nonlinear time-domain unsteady aerodynamics. These methods have been applied to all levels of the nonlinear fluid equations from two-dimensional transonic small disturbance (TSD) to full three-dimensional Navier-Stokes equations. These techniques assume that dynamic deformations are restricted to small perturbations about a given static equilibrium position. With this assumption, it follows that the generalized forces can be expressed as a linear combination of the generalized displacements.