Patent ID: 9086054
Filing Date: 2015-07-21
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine blade extending in a spanwise direction from a root end to a tip end and defining an aerodynamic airfoil cross-section between a leading edge and a trailing edge in a chordwise direction transverse to the spanwise direction, the blade having a camber in the chordwise direction and comprising: a blade body; a flap moveable relative to the blade body for varying the camber of the blade; and a deformable panel between the blade body and the moveable flap, the panel having an undulating profile comprising an alternating succession of ridges and troughs, the ridges and troughs each extending in a first direction, wherein the panel is formed of a material having anisotropic intrinsic stiffness with maximum anisotropic intrinsic stiffness being transverse to the first direction.