Wind turbine blade unit

Details Wind turbine blade unit Wind turbine blade unit

F - Mech Eng,Light,Heat,Weapons

03

D

F03D 11/00 (2006.01) F03D 1/06 (2006.01)

Patent

CA 2425447

A blade unit assembly for applications such as wind turbines, characterized by the arrangement of a main airfoil and a smaller secondary airfoil joined by streamlined structural elements, is mounted on a rotor hub assembly using a holding spar extending from the main airfoil. The blade unit is balanced and can pivot about its holding spar longitudinal axis, and has aerodynamic static and dynamic stability that provides the blade unit with pitch angle self-adjustment capability for controlling the wind turbine rotor hub rotation speed, for initiating rotor rotation in low winds, and for limiting the rotor blades speed in high winds. A plurality of blade units is mounted on a rotor hub.

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