Rotor blade for a wind power installation

F - Mech Eng,Light,Heat,Weapons – 03 – D

Patent

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Details

F03D 1/06 (2006.01) F03D 3/06 (2006.01) F03D 7/02 (2006.01)

Patent

CA 2432556

The present invention concerns a rotor blade for a wind power installation and a wind power installation comprising at least one rotor blade according to the invention. 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 the 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 deformable or movable.

La présente invention concerne une pale de rotor destinée à une éolienne, ainsi qu'une éolienne comportant au moins une pale de rotor selon l'invention. Plus la surface exposée au vent, en particulier la surface de pale de rotor, est petite, plus le niveau de charge pour lequel l'éolienne doit être conçue est bas, et plus la pale de rotor peut être transportée facilement. Cependant, en fonction de la grandeur de l'éolienne, des dimensions minimales de pale de rotor à respecter absolument pour le fonctionnement ne peuvent pas présenter des valeurs inférieures. Pour que l'on puisse obtenir une pale de rotor qui, d'une part, présente la surface requise sur le plan aérodynamique et, d'autre part, soit conçue de façon telle que sa surface et donc sa profondeur puissent être réduites dans des situations prédéterminées, une partie de la surface de la pale de rotor est déformable ou mobile.

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