Jong-Yun Kim · Kyung-Seok Kim · In Lee
International Journal of Aeronautical and Space Sicences, vol. 9, no. 2, pp.34-40, 2008

Abstract : The aeroelastic analyses for several wing models were performed using the transonic small-disturbance (TSD) equation, which is very efficient, to consider the aerodynamic nonlinearities in the transonic region. For more accurate aerodynamic analysis of airfoil and wing models with shock waves, the viscous equations based on the Green's lag-entrainment equation of boundary-layer effects were coupled with the TSD equation in the transonic region. Finally the aeroelastic characteristics of wing models were investigated through comparisons of the aeroelastic analysis results for wing models considering the change of a thickness of the airfoil section. Moreover, the results of the aeroelastic analysis using the coupled TSD equation with the viscous equations were compared with those using the TSD equation for several wing models.

Keyword : Aeroelasticity, Flutter, Transonic Flow, Viscosity, Thickness Effects