US 11,781,522 B2
Wind turbine rotor blade assembly for reduced noise
Christian Carroll, Simpsonville, SC (US); Murray Fisher, Greer, SC (US); Benoit Philippe Petitjean, Moosburg (DE); Andreas Herrig, Garching b. Muenchen (DE); Drew Adam Wetzel, Easley, SC (US); and Jonathon Paul Baker, Simpsonville, SC (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Aug. 17, 2021, as Appl. No. 17/404,399.
Application 17/404,399 is a continuation in part of application No. 16/132,885, filed on Sep. 17, 2018, abandoned.
Prior Publication US 2021/0372364 A1, Dec. 2, 2021
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/0633 (2013.01) [F05B 2230/50 (2013.01); F05B 2240/211 (2013.01); F05B 2250/711 (2013.01); F05B 2250/712 (2013.01); F05B 2260/96 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rotor blade assembly of a wind turbine, the rotor blade assembly comprising:
a rotor blade comprising an aerodynamic body having an inboard region and an outboard region, the inboard and outboard regions defining a pressure side, a suction side, a leading edge, and a trailing edge, the inboard region comprising a blade root, the outboard region comprising a blade tip, the rotor blade defining a chord and a span;
the inboard region comprising a transitional region of the rotor blade that comprises a maximum chord,
wherein a unitless first derivative of the chord with respect to the span of the rotor blade in the transitional region ranges from about −0.10 to about 0.10 from the maximum chord over about 15% of the span of the rotor blade, and
wherein the unitless first derivative of the chord with respect to the span is greater than about −0.03 at an inflection point of the chord in the outboard region.