Assembly for providing flexure to blade system

B - Operations – Transporting – 64 – C

Patent

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Details

B64C 27/33 (2006.01) B64C 27/51 (2006.01)

Patent

CA 2596322

An assembly for providing flexure to a blade of a rotary blade system, the assembly including an upper support plate (22) having an upper curved surface (37) , a lower support plate (24) having a lower curved surface (37) , and a yoke (120) positioned therebetween. At least one of the upper and lower yoke surfaces (37) having a layer of cushioning material (56) positioned thereon and secured thereto. The layer of cushioning material (56) extending along and following the general contour of yoke surface (37) , and the layer of cushioning material (56) directly contacting a support plate (22,24) . Another embodiment is an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate (22) having an upper curved surface (27) , a lower support plate (24) having a lower curved surface (37) , and a yoke (120) positioned therebetween and directly contacting the support plates wherein one of the curved surfaces (37) is a non-circular arc that does not form part of the circumference of a circle.

L'invention concerne un ensemble destiné à conférer une courbure à une pale d'un système à pales tournantes, cet ensemble comprenant une plaque de support supérieure possédant une surface incurvée supérieure, une plaque de support inférieure possédant une surface incurvée inférieure, et une chape disposée entre ces deux plaques. L'une au moins des surfaces de chape supérieure et inférieure comprend une couche d'une matière d'amortissement disposée sur celle-ci et fixée à celle-ci. La couche de matière d'amortissement s'étend le long du contour général de la surface de la chape et suit ce contour, cette couche de matière d'amortissement venant directement au contact d'une plaque de support. Un autre mode de réalisation concerne un ensemble destiné à conférer une courbure à une pale d'un système à pales et comprenant une plaque de support supérieure possédant une surface incurvée supérieure, une plaque de support inférieure possédant une surface incurvée inférieure, et une chape disposée entre ces deux plaques et venant directement au contact des plaques de support, l'une des surfaces incurvées formant un arc non circulaire ne faisant pas partie de la circonférence d'un cercle.

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