US 12,305,611 B2
Rotor blade of a wind turbine and corresponding wind turbine
Marc Petsche, Berlin (DE)
Assigned to Bewind GmbH, Rendsburg (DE); and WEG Equipamentos Elétricos S.A., Jaraguá do Sul—SC (BR)
Filed by WEG Equipamentos Elétricos S.A., Jaraguá do Sul—SC (BR); and Bewind GmbH, Rendsburg (DE)
Filed on Jul. 28, 2023, as Appl. No. 18/227,392.
Claims priority of provisional application 63/393,666, filed on Jul. 29, 2022.
Prior Publication US 2024/0035437 A1, Feb. 1, 2024
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/06495 (2023.08) [F03D 1/0647 (2023.08); F05B 2250/71 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A rotor blade for a wind turbine, wherein the rotor blade comprises a high lift root profile with flat-back trailing edge with a suction side and a pressure side,
wherein a relative airfoil thickness is between 45% and 75% or between 48% and 70% of a chord length,
wherein a trailing edge thickness is between 30% and 75% or between 35% and 60% of the relative airfoil thickness,
wherein a chord position of a maximum relative airfoil thickness, which is measured from a leading edge towards the trailing edge, is between 35% and 45% or between 36% and 42% of the chord length, and
wherein a curvature of the suction side has a first local maximum at a chord position between 0% and 5% of the chord length, a second local maximum of the curvature close to the maximum relative airfoil thickness position at 25% to 45% of the chord length, and a local minimum between the first and second local maxima, where the curvature is lower than 78% of a value of a local curvature maximum close to the maximum relative airfoil thickness position.