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Title: Wind turbine rotor blade with in-plane sweep and devices using the same, and methods for making the same

Patent ·
OSTI ID:1136393

A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC36-83CH10093
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
8,757,982
Application Number:
12/009,901
OSTI ID:
1136393
Country of Publication:
United States
Language:
English

References (14)

Low noise blades for axial flow compressors patent March 1977
Wind driven power system patent September 1977
Blade end for rotary wing of an aircraft and rotary wing provided with such blade ends patent May 1984
Airscrew or propeller for propelling an aircraft patent September 1989
Multi-sweep blade with abrupt sweep transition patent November 1991
Quiet tail rotor patent August 1992
Forward swept rotor blade patent December 1992
Blade for aircraft rotary wings, with swept-back tip patent July 1994
Forward sweep, low noise rotor blade patent December 1996
Blade with reduced sound signature, for aircraft rotating aerofoil, and rotating aerofoil comprising such a blade patent September 2000
Air foil configuration for wind turbine patent January 2003
Windmill rotor and wind blades therefor patent June 2003
Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same patent March 2008
Rotor blade for a wind power plant patent June 2009

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