System and method for attenuating the noise of airfoils

摘要

A system and method for reducing the noise of an airfoil 62 is provided. The airfoil 62 includes a main portion 64 including a leading edge and a trailing edge 66. The airfoil further comprises a noise attenuator 86 coupled to the main portion and disposed proximate to at least a portion of the trailing edge. The noise attenuator 86 has a chord length in the range of about 0.5 to about 5 times a trailing edge thickness and is fixed relative to the trailing edge. The airfoil 62 can be a rotating blade deployed on a wind turbine 18. The airfoil 62 can also be deployed on an aircraft as a fixed wing.