Torsional Vibration on Elastic Wings in Uniform Flows

Abstract

Aerodynamic characteristics of wings are determined generally by geometrical shape and Reynolds number. Wings in flows might deform and vibrate, which would affect the aerodynamics, provided wings have appropriate physical properties. In this study, self-excited vibration of torsional mode on rectangular wings with various densities and elasticities are focused on. Two non-dimensional parameters are introduced from the equation of torsional motion and relation with torsional vibration on the rectangular wings are investigated. It is found that occurrence of the torsional vibration is determined by the two non-dimensional parameters.