Rotor blade of a wind turbine and corresponding wind turbine
AssigneesBewind GmbH, Weg Equipamentos EléTricos S.A.
InventorMarc Petsche
Life of this patent
Estimating the term…
Abstract
A rotor blade for a wind turbine is provided. The rotor blade includes a high lift root profile with flat-back trailing edge with a suction side and a pressure side, a relative airfoil thickness being between 45% and 75% or between 48% and 70% of a chord length. A trailing edge thickness is between 30% and 75% or between 35% and 60% of the relative airfoil thickness. The chord position of the 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. Also provided is a wind turbine equipped with the rotor blade(s).
Claims6
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.
A wind turbine, equipped with rotor blades having high lift root profiles with flat-back trailing edges with a suction side and a pressure side, wherein, for each of the rotor blades:
- a relative airfoil thickness is between 45% and 75 or between 48% and 70% of a chord length,
- a trailing edge thickness is between 30% and 75 or between 35% and 60% of the relative airfoil thickness,
- 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
- 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.
Dependencies are inferred from the claim text.