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US 11,220,998 B2Granted
Wind turbine blade, wind turbine rotor, and wind turbine power generating apparatus
AssigneeVestas Wind Systems A/S
InventorsHideyasu Fujioka, Masayuki Hiraishi
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Abstract
A wind turbine blade includes: a blade body portion; and an anti-erosion layer disposed so as to cover a surface of the blade body portion partially. A center point of the anti-erosion layer in a circumferential length direction along a blade profile in a cross section orthogonal to a blade spanwise direction is shifted toward a pressure side from a leading edge of the blade body portion, at least in a part of an extension range of the anti-erosion layer in the blade spanwise direction.
Claims14
A wind turbine blade, comprising:
- a blade body portion;
- and
- an anti-erosion layer disposed so as to cover a leading edge of the blade body portion and a pressure side of the blade body portion at a first position along a spanwise direction of the blade body portion and at a second position along the spanwise direction closer to a blade tip of the blade body portion than the first position,
- wherein, at the first position, a first center point of the anti-erosion layer in a circumferential length direction along a blade profile in a cross section orthogonal to the spanwise direction is shifted towards the pressure side from the leading edge by a first shift amount, wherein, at a second position, a second center point of the anti-erosion layer in the circumferential length direction along the blade profile in the cross section orthogonal to the spanwise direction is shifted towards the pressure side from the leading edge by a second shift amount, and wherein the first shift amount is greater than the second shift amount.
1 more element
Dependencies are inferred from the claim text.