Winglet for wind turbine rotor blade

Details Winglet for wind turbine rotor blade Winglet for wind turbine rotor blade

2011-08-16

2011-08-16

Edgar, Richard (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Irregular, flanged or channel forming blade surface

C416S238000

Reexamination Certificate

active

07997875

ABSTRACT:
A rotor blade for a wind turbine is disclosed. The rotor blade includes a root, a tip, and a body extending from the root, the body including a pressure side and a suction side extending between a leading edge and a trailing edge. The rotor blade further includes a winglet extending between the body and the tip, the winglet including a pressure side and a suction side extending between a leading edge and a trailing edge. The winglet further includes a transition section and defines a height, a sweep angle, an outboard cant angle, and a twist angle. The sweep angle, the outboard cant angle, and the twist angle change continuously throughout the transition section.

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patent: 2004084590 (2004-03-01), None
patent: WO 2006/059472 (2006-06-01), None
Nangia, et al. “Aerodynamic Design Studies of Conventional & Unconventional Wings with Winglets”, pp. 1-18, AIAA 2006-3460, San Francisco, 2006.
Johansen et al. “Aerodynamic Investigation of Winglets on Wind Turbine Blades using CFD”, pp. 1-17, Riso National Laboratory, Denmark, Feb. 2006.
George, Fred. “Understanding Winglet Technology”, pp. 1-7.

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