IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0307666
(2014-06-18)
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등록번호 |
US-9803617
(2017-10-31)
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발명자
/ 주소 |
- Merzhaeuser, Thomas
- Buravalla, Vidyashankar Ramasastry
- Krishnamurthy, Sriram
- Lin, Wendy Wen-Ling
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
4 |
초록
▼
A wind blade includes a self-supporting structural framework, having a span-wise member, a plurality of chord-wise members, a fabric skin, and at least one of a stiffener and a mechanical element. The plurality of chord-wise members is coupled to the span-wise member and each chord-wise member and t
A wind blade includes a self-supporting structural framework, having a span-wise member, a plurality of chord-wise members, a fabric skin, and at least one of a stiffener and a mechanical element. The plurality of chord-wise members is coupled to the span-wise member and each chord-wise member and the span-wise member maintains an aerodynamic contour of the wind blade. Further, the fabric skin is disposed over the self-supporting structural framework. The stiffener and/or the mechanical element are coupled to the self-supporting structural framework, and are operable to provide a relative movement to the self-supporting structural framework for adjusting the aerodynamic contour and provide pretension to the fabric skin.
대표청구항
▼
1. A wind blade comprising: a self-supporting structural framework including: a span-wise member; anda plurality of chord-wise members coupled to the span-wise member, wherein each chord-wise member among the plurality of the chord-wise members and the span-wise member have an aerodynamic contour;a
1. A wind blade comprising: a self-supporting structural framework including: a span-wise member; anda plurality of chord-wise members coupled to the span-wise member, wherein each chord-wise member among the plurality of the chord-wise members and the span-wise member have an aerodynamic contour;a fabric skin disposed over the self-supporting structural framework; anda stiffener coupled to the self-supporting structural framework, and is operable to provide a relative movement to the self-supporting structural framework for adjusting the aerodynamic contour and provide pretension to the fabric skin,wherein each chord-wise member among the plurality of chord-wise members comprises a leading edge top member, a leading edge bottom member, a trailing edge top member, and a trailing edge bottom member, wherein the stiffener is coupled diagonally between the trailing edge top member and the mutually adjacent trailing edge top member via a first joint and a second joint respectively, in a 2-dimensional plane or vice versa, wherein the first joint and the second joint comprises a displacement member and a locking mechanism, wherein the displacement member holds the stiffener at a first coupling position and supports the relative movement of the trailing edge top member and the mutually adjacent trailing edge top member by shifting the stiffener from the first coupling position to a second coupling position, and wherein the locking mechanism locks the stiffener at the second coupling position. 2. The wind blade of claim 1, wherein the span-wise member comprises a leading edge member, a trailing edge member, and an internal support member having a shear web, a top spar cap, and a bottom spar cap. 3. The wind blade of claim 2, further comprising a mechanical element coupled to the self-supporting structural framework and is operable to provide the relative movement to the self-supporting structural framework for adjusting the aerodynamic contour and provide pretension to the fabric skin, wherein the mechanical element comprises at least one of a cam, a strut, a linkage, a tensioning screw element, and a compliant mechanism. 4. The wind blade of claim 3, wherein the leading edge top member is coupled to the leading edge member and the top spar cap, and the leading edge bottom member is coupled to the leading edge member and the bottom spar cap. 5. The wind blade of claim 4, wherein the trailing edge top member is coupled to the trailing edge member and the top spar cap or the shear web and the trailing edge bottom member is coupled to the trailing edge member and the bottom spar cap or the shear web. 6. The wind blade of claim 5, wherein the trailing edge top member is coupled to the internal support member via a first joint and the trailing edge bottom member is coupled to the internal support member via a second joint. 7. The wind blade of claim 6, wherein the first joint and the second joint comprises a displacement member and a locking mechanism, wherein the displacement member holds the trailing edge top member and the trailing edge bottom member at a first coupling position and supports the relative movement of the trailing edge top member and the trailing edge bottom member by sliding the trailing edge top member and the trailing edge bottom member from the first coupling position to a second coupling position, wherein the locking mechanism locks the trailing edge top member and the trailing edge bottom member at the second coupling position. 8. The wind blade of claim 3, wherein the linkage comprises a first arm and a second arm coupled to the first arm via a support pin, wherein the first arm is coupled to at least one chord-wise member among the plurality of chord-wise members and the second arm is coupled to an at least one mutually adjacent chord-wise member among the plurality of chord-wise members, wherein the first arm and the second arm supports the chord-wise member and the mutually adjacent chord-wise member at a first position and provides the relative movement to the chord-wise member and the mutually adjacent chord-wise member by shifting the support pin from the first position to a second position. 9. The wind blade of claim 1, wherein the stiffener is coupled diagonally between the trailing edge top member and a mutually adjacent trailing edge bottom member via a first joint and a second joint respectively, in a 3-dimensional plane or vice versa. 10. The wind blade of claim 9, wherein the first joint and the second joint comprises a displacement member and a locking mechanism, wherein the displacement member holds the stiffener at a first coupling position and supports the relative movement of the trailing edge top member and the mutually adjacent trailing edge bottom member by turning the stiffener from the first coupling position to a second coupling position, wherein the locking mechanism locks the stiffener at the second coupling position. 11. A method comprising: assembling a fabric skin over a self-supporting structural framework comprising a plurality of chord-wise members and a span-wise member having an aerodynamic contour; andproviding a stiffener for pretensioning the fabric skin,wherein the stiffener is coupled to at least one chord-wise member among the plurality of chord-wise members and a mutually adjacent chord-wise member, and the mechanical element is coupled to the at least one chord-wise member,wherein the stiffener is operable to provide a relative movement to the at least one chord-wise member for adjusting the aerodynamic contour of the self-supporting framework for pretensioning the fabric skin, andwherein the providing comprises shifting the stiffener from a first coupling position to a second coupling position in a 2-dimensional plane so as to extend a length of the at least one chord-wise member. 12. The method of claim 11, wherein the providing comprises turning the stiffener from a first coupling position to a second coupling position in a 3-dimensional plane so as to extend a width of the at least one chord-wise member. 13. The method of claim 11, further comprising providing a mechanical element for pretensioning the fabric skin by moving the mechanical element from a first coupling position to a second coupling position so as to change a shape or a length or a width of at least the one chord-wise member, wherein the mechanical element comprises at least one of cam, a strut, a linkage, a tensioning screw element, and a compliant mechanism. 14. A wind turbine comprising: a plurality of wind blades, wherein each of the blade comprises: a self-supporting structural framework including: a span-wise member; anda plurality of chord-wise members coupled to the span-wise member, wherein each chord-wise member among the plurality of the chord-wise members and the span-wise member have an aerodynamic contour;a fabric skin disposed over the self-supporting structural framework; anda stiffener coupled to the self-supporting structural framework, and is operable to provide a relative movement to the self-supporting structural framework for adjusting the aerodynamic contour and provide pretension to the fabric skin,wherein each chord-wise member among the plurality of chord-wise members comprises a leading edge top member, a leading edge bottom member, a trailing edge top member, and a trailing edge bottom member, wherein the stiffener is coupled diagonally between the trailing edge top member and the mutually adjacent trailing edge top member via a first joint and a second joint respectively, in a 2-dimensional plane or vice versa, wherein the first joint and the second joint comprises a displacement member and a locking mechanism, wherein the displacement member holds the stiffener at a first coupling position and supports the relative movement of the trailing edge top member and the mutually adjacent trailing edge top member by shifting the stiffener from the first coupling position to a second coupling position, and wherein the locking mechanism locks the stiffener at the second coupling position. 15. The wind turbine of claim 14, further comprising a mechanical element coupled to the self-supporting structural framework and is operable to provide the relative movement to the self-supporting structural framework for adjusting the aerodynamic contour and provide pretension to the fabric skin, wherein the mechanical element comprises at least one of a cam, a strut, a linkage, a tensioning screw element, and a compliant mechanism. 16. The wind turbine of claim 14, wherein the stiffener is coupled diagonally between the trailing edge top member and a mutually adjacent trailing edge bottom member via a first joint and a second joint respectively, in a 3-dimensional plane or vice versa.
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