A WIND TURBINE WING WITH NOISE REDUCTION MEANS

For the purpose of reducing the inevitable noise from the flow of air over a rotating wind turbine wing part of the wing surface is provided with means for changing its acoustic reflection. These means for changing the acoustic reflection may be formed in an indentation on the upper side provided wi...

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Bibliographische Detailangaben
1. Verfasser:	LARSEN, PETER, NOHR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER STEAM ENGINES WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	For the purpose of reducing the inevitable noise from the flow of air over a rotating wind turbine wing part of the wing surface is provided with means for changing its acoustic reflection. These means for changing the acoustic reflection may be formed in an indentation on the upper side provided with a sound absorbing material, or provided with a plate mounted on compliant parts. A possibility is also to provide the indentation with a resonance-absorbing element. A final possibility is to provide the upper side, the lower side, or the trailing edge of the wing with openings leading to one or several cavities inside the wing. By the invention the means for changing the acoustic reflection are integrated into the wing, so that the flow around the wing is unaffected and the noise from the different noise sources are reduced in an effective way.