B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
B64C 27/473 (2006.01) B64C 27/48 (2006.01) B64C 27/82 (2006.01)
Patent
CA 2445779
The present invention comprises a rotor blade (34) and method of manufacture thereof. The rotor blade (34) of the present invention incorporates a number of novel features in order to increase its reliability and strength while reducing its weight. In certain embodiments, the rotor blade (34) of the present invention incorporates a flexural strap (140) in place of traditional pitch bearings. In certain embodiments, the rotor blade (34) of the present invention is manufactured using a unique fiber placement layup technique to reduce failure modes and maximize the fatigue strength of the part.
La présente invention concerne une pale de rotor (34) et un procédé de fabrication de cette dernière. Cette pale (34) présente un certain nombre de nouvelles caractéristiques permettant d'augmenter sa fiabilité et sa résistance tout en réduisant son poids. Selon certains modes de réalisation, la pale de rotor (34) selon l'invention comprend une sangle de flexion (140) à la place des articulations de pas traditionnelles. Selon certains modes de réalisation, la pale de rotor (34) selon l'invention est fabriquée à l'aide d'une technique de positionnement de fibre unique pour réduire les modes de défaillance et maximiser la résistance à la fatigue de la pièce.
Boyle Eric C.
Finch Christopher O.
Sehgal Ajay
Thompson Robert S.
Bell Helicopter Textron Inc.
Macrae & Co.
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