Patent ID: 8414261

Claim:
A rotor blade assembly for a wind turbine, comprising: a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root; and, a noise reducer configured on a surface of the rotor blade, the noise reducer comprising a plurality of noise reduction features, each of the plurality of noise reduction features comprising: a first surface comprising a first portion mounted to one of the pressure side or the suction side and a second portion configured to interact with wind flowing past the other of the pressure side or the suction side; a second surface interrupting an aerodynamic contour of the one of the pressure side or the suction side, and a first layer and a second layer, the first layer comprising the first portion and second surface of each of the plurality of noise reduction features and the second layer comprising the second portion, wherein the first layer is formed from an acoustic absorption material.