The Effect of Laminated Layers on the Flutter Speed of Composite Wing

The paper presents an investigation to the flutter speed of composite wing for different ply orientation. Structurally was idealized as a beam load carrying structure. Theodorsen’s expression used get 2- dimension unsteady lifting force and pitching moment in limit incompressible flow subsonic which were integrated over span. A free vibration analysis first carried out natural frequencies mode shapes .The velocity-damping (V-g) method calculate frequency. unmanned aerial vehicle manufactured from woven glass polyester resin where calculated experimentally by wind tunnel test analytically orientation, it is found that increasing torsion rigidity leads increase speed, fiber combination with high relatively low coupling give higher speed.