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US 9,759,185 B2Granted
Rotor blade for a wind power plant
AssigneeWobben Properties GmbH
InventorThomas Bohlen
Life of this patent
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Abstract
The invention concerns a rotor blade of a wind power installation, comprising a rotor blade root (4) for attachment of the rotor blade to a rotor hub and a rotor blade tip arranged at a side remote from the rotor blade root, as well as a wind power installation having such rotor blades. In that arrangement a relative profile thickness which is defined as the ratio of profile thickness to profile depth has a local maximum in a central region between rotor blade root and rotor blade tip.
Claims13
A rotor blade of a wind power installation, the rotor blade comprising:
- a rotor blade root region including a rotor blade root for attachment of the rotor blade to a rotor hub,
- a rotor blade tip arranged at a side remote from the rotor blade root, and
- a relative profile thickness, that is defined as a ratio of a profile thickness to a profile depth, has a local maximum in a central region that is between 30% to 60% of a length of the rotor blade, wherein the local maximum is formed due to a reduced profile depth in the central region and a reduced profile thickness in the central region relative to the rotor blade root region, wherein the reduction in the profile thickness is an amount that is less than an amount at which the profile depth is reduced.
A wind power installation comprising:
- a rotor hub;
- and
- a rotor blade having:
- a rotor blade root region at a first end, the rotor blade root region including a rotor blade root coupled to the rotor hub;
- a rotor blade tip at a second end;
- and
- a relative profile thickness has a local maximum in a central region that is between 30% to 60% of a length of the rotor blade, the relative profile thickness being defined as a ratio of a profile thickness of the rotor blade to a profile depth of the rotor blade, wherein the local maximum is formed due to a reduced profile depth in the central region and a reduced profile thickness in the central region relative to the rotor blade root region, wherein the reduction in the profile thickness is an amount that is less than an amount at which the profile depth is reduced.
4 more elements
Dependencies are inferred from the claim text.