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US 7,204,674 B2Granted
Rotor blade for a wind power installation
OwnerAloys Wobbeninventor
Life of this patent
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OwnerAloys Wobbeninventor
Estimating the term…
A rotor for a wind power installation having at least one rotor blade. The smaller the surface area on which the wind acts, that is to say in particular the rotor blade area, the correspondingly lower is the load level for which installation has to be designed and the correspondingly more easily can the rotor blade be transported. On the other hand the size of the wind power installation entails minimum dimensions which are unavoidable for operation and below which the installation dimensions may not fall. In order to provide a rotor blade which on the one hand has the aerodynamically required surface area but which on the other hand is so designed that the surface area of the rotor blade and therewith the depth thereof can be reduced in predetermined situations a part of the surface of the rotor blade is deformmable or movable.
A wind power installation rotor blade comprising a surface area which is exposed to wind during operation and means for varying a size of the surface area, wherein the size of the surface area is changed in certain portions of the rotor blade such that a cross-section shape of the rotor blade is varied, wherein the means for varying the size of the surface area includes a deformable part of the surface area, wherein the deformable part includes an inflatable closed container, wherein the size of the closed container and the size of the surface area are reduced during an extreme wind situation.
A wind power installation rotor blade comprising:
A method of operation of a wind power installation, the method comprising:
Dependencies are inferred from the claim text.