Method of forming a structural connection between a spar cap and a fairing for a wind turbine blade
First Claim
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1. A method of forming a structural connection between a spar cap and an aerodynamic fairing for a wind turbine blade, the method comprising:
- applying a composite between the spar cap and the fairing, the composite comprising an uncured matrix and a compressible solid;
compressing the compressible solid so that composite substantially occupies a space between the spar cap and the fairing;
curing the uncured matrix to maintain the compressible solid in its compressed state with the composite having a void volume of at least 20%, the void volume absent of the matrix and the compressible solid; and
adhering the fairing to the spar cap as the matrix is cured.
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Abstract
A method of forming a structural connection between a spar cap 14 and an aerodynamic fairing 12. A composite comprising an uncured matrix and a compressible solid is applied between the spar cap and fairing and is then compressed and cured to adhere the fairing to the spar cap. The cured matrix composite has a void volume of at least 20%. The high void volume means that as the fairing is compressed into place and compresses the composite, it has space in which to deform so as not to place undue stress on the fairing and to produce a lightweight connection.
90 Citations
22 Claims
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1. A method of forming a structural connection between a spar cap and an aerodynamic fairing for a wind turbine blade, the method comprising:
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applying a composite between the spar cap and the fairing, the composite comprising an uncured matrix and a compressible solid; compressing the compressible solid so that composite substantially occupies a space between the spar cap and the fairing; curing the uncured matrix to maintain the compressible solid in its compressed state with the composite having a void volume of at least 20%, the void volume absent of the matrix and the compressible solid; and adhering the fairing to the spar cap as the matrix is cured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wind turbine blade comprising:
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a spar with at least one spar cap; a fairing positioned over the spar cap; and a composite which substantially fills a space between the spar cap and the fairing, wherein the composite comprises a cured matrix, a compressed solid and a void volume of at least 20%, the void volume absent of the matrix and the compressible solid. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification