Patent ID: 8246311
Filing Date: 2012-08-21
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine blade, comprising: a pressure side, and a suction side, said pressure side and said suction side joined at a leading edge and a trailing edge and defining an internal cavity of said blade; a porous window defined in said suction side, said porous window permeable to airflow from within said internal cavity through said suction side, said porous window defined by a plurality of individual holes through a defined material section of said suction side; an air manifold within said internal cavity, said porous window in airflow communication with said air manifold such that said air manifold is common to said plurality of individual holes in said porous window; an inlet air passage in said pressure side in communication with said air manifold; and, a deployable cover member configured with said porous window, said cover member impermeable to airflow therethrough and variably positionable from a fully closed position wherein airflow through said porous window is blocked to a fully open position wherein airflow is established through an entirety of said porous window.