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United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A blade for use in a wind turbine comprises a pressure side and suction side meeting at a trailing edge and leading edge, the pressure side having a pressure side surface and the suction side having a suction side surface, the pressure side surface and suction side surface for providing lift to the turbine blade upon the flow of air from the leading edge to the trailing edge and over the pressure side and suction side surfaces, the pressure side and suction side extending from a root portion to a tip portion of the turbine blade. In some situations, the root portion is non-aerodynamic. The aerodynamics of such a blade is improved with the aid of pneumatic blowing through one or more blown passages for providing pressurized air (or other fluid) to a suction side and/or pressure side of the blade.
Lees, Paul (San Francisco, CA), Englar, Robert J. (Marietta, GA), Blaylock, Graham M. (Smyrna, GA)
13/ 185,459
July 18, 2011
STATEMENT AS TO FEDERALLY SPONSORED RESEARCH [0002] This invention was made with Government support under DE-00000022 awarded by the United States Department of Energy. The Government has certain rights in the invention.