IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0139868
(2009-12-14)
|
등록번호 |
US-8475128
(2013-07-02)
|
우선권정보 |
DK-2008 01794 (2008-12-17) |
국제출원번호 |
PCT/EP2009/067090
(2009-12-14)
|
§371/§102 date |
20110921
(20110921)
|
국제공개번호 |
WO2010/069926
(2010-06-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Wood, Herron & Evans, LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
1 |
초록
▼
The invention relates to a fairing adapted to be mounted on a wind turbine blade (2), wherein the outer surface of said fairing is arranged so as to reduce, when mounted on the blade, the aerodynamic drag in a flapwise (z) direction of the blade. In this way a reduction of the exciter power required
The invention relates to a fairing adapted to be mounted on a wind turbine blade (2), wherein the outer surface of said fairing is arranged so as to reduce, when mounted on the blade, the aerodynamic drag in a flapwise (z) direction of the blade. In this way a reduction of the exciter power required in a flatwise fatigue test of the blade is achieved.
대표청구항
▼
1. A fairing adapted to be mounted on a wind turbine blade during fatigue testing of the blade but otherwise adapted to form no part of a wind turbine blade during operation of a wind turbine, wherein the outer surface of said fairing is arranged so as to reduce, when mounted on the blade during fat
1. A fairing adapted to be mounted on a wind turbine blade during fatigue testing of the blade but otherwise adapted to form no part of a wind turbine blade during operation of a wind turbine, wherein the outer surface of said fairing is arranged so as to reduce, when mounted on the blade during fatigue testing, the aerodynamic drag in a flapwise (z) direction of the blade. 2. The fairing according to claim 1, wherein said fairing is inflatable and sealable in an inflated state. 3. The fairing according to claim 2, wherein said fairing comprises a sealable air inlet arranged for engaging with a high pressure air nozzle. 4. The fairing according to claim 1, wherein the density of said fairing is less than 90% of the density of the blade. 5. The fairing according to claim 1, adapted to cover, at least along a portion of the blade in the longitudinal direction of the blade, the entire blade from the leading edge to the trailing edge of the blade. 6. The fairing according to claim 1, adapted to provide a shape that is more streamlined in the flapwise direction than the blade itself. 7. The fairing according to claim 1, which, when mounted on a blade, presents an outer surface which, as seen in a cross-section taken in parallel with the chord direction (y) and the flapwise direction (z) of the blade, is tapered from the blade towards respective ends (P, P2) being distal to the blade. 8. The fairing according to claim 1, which, when mounted on a blade, presents an outer surface which, as seen in a cross-section taken in parallel with the chord direction and the flapwise direction (z) of the blade, is convex. 9. The fairing according to claim 7, wherein at least a portion of said outer surface, as seen in a cross-section taken in parallel with the chord direction and the flapwise direction (z) of the blade, substantially describes at least a portion of an ellipse, cartenoid, parabola, hyperbola or triangle. 10. The fairing according to claim 1, which, when mounted on a blade, presents an outer surface which, as seen in a cross-section taken in parallel with the chord direction (y) and the flapwise direction (z) of the blade, is substantially circular. 11. The fairing according to claim 1, wherein the length of said fairing in use covers at least 10% of the length of the blade. 12. The fairing according to claim 1, comprising at least one fairing portion adapted to be positioned on a pressure side of the blade and at least one fairing portion adapted to be positioned on a suction side of the blade. 13. The fairing according to claim 1, wherein the density of said fairing is less than 80% of the density of the blade. 14. The fairing according to claim 1, wherein the density of said fairing is less than 70% of the density of the blade.
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