Aeroelastic analysis of composite wings with unbalance laminates

The aeroelastic analysis was performed on the high-aspect- ratio composite wings with unbalance lami-
nates in up side and downside skins. Considering the effect of the variation of the unbalance laminates of skins on the aeroelastic performance , aeroelastic models were built for the high - aspect - ratio composite wings with different swept angles and unbalance laminates in the skins. The variations of the deformation and the lif t performance in the case of heavy loads with the unbalance level of the skin laminates were analyzed for the wings , as well as the variation tendency of the vibration characteristics and the divergence/ flut ter speed. The result s show that the unbalance level of the skin laminates has great effect s on the divergence speed and static aeroelastic characteristics of the wings , but lit tle effect s on the natural f requencies and flut ter speed.