TY - EJOU AU - Kim, K.S. AU - Yoo, J.H. AU - Bae, J.S. AU - Lee, I. TI - Nonlinear Aeroelastic Analysis of a Wing with Control Surface Freeplay T2 - The International Conference on Computational \& Experimental Engineering and Sciences PY - 2007 VL - 2 IS - 3 SN - 1933-2815 AB - In this paper, nonlinear aeroelastic characteristics of a wing with control surface freeplay were investigated. The transonic small disturbance equation was applied to calculate unsteady aerodynamic forces in subsonic/transonic region. The fictitious mass method was used to apply a modal approach to nonlinear structural models. Nonlinear aeroelastic time responses were calculated by the coupled time integration method. In this study, it was found that aerodynamic nonlinearity, initial flap angle and freeplay angle affect aeroelastic characteristics. KW - DO - 10.3970/icces.2007.002.075