B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
B64C 27/35 (2006.01) B64C 27/45 (2006.01) B64C 27/48 (2006.01)
Patent
CA 2288961
The invention concerns a rotor blade, in particular for helicopter antitorque tail rotor, comprising: a blade shank (3) mounted rotating in said rotor hub (4E), to enable said blade to rotate about its step axis (P-P); and means for fixing said rotor shank (3) to said rotor hub, including a member capable of elastic twist deformation about said step axis. The invention is characterised in that: said blade shank (3) is hollow and open at its inner end so as to comprise an internal recess (12); said member capable of elastic twist deformation consists of an elastic stop (15) housed inside said blade shank internal recess (12) and capable of functioning like a spherical mounting with limited action, centred on said step axis; and a rigid tie rod (6) connects said elastic stop to said rotor hub (4C).
La présente invention concerne une pale de rotor, notamment pour le rotor arrière anticouple d'un hélicoptère, comportant: un pied de pale (3) monté rotatif dans le moyeu (4E) dudit rotor, pour permettre à ladite pale de tourner autour de son axe de pas (P-P); et des moyens d'attache dudit pied de pale (3) audit moyeu du rotor, comportant un organe élastiquement déformable en torsion autour dudit axe de pas. Selon l'invention, ladite pale est remarquable en ce que: ledit pied de pale (3) est creux et ouvert à son extrémité interne de manière à comporter un évidement intérieur (12); ledit organe élastiquement déformable en torsion est constitué par une butée élastique (15) logée dans ledit évidement intérieur (12) dudit pied de pale et susceptible d'agir à la manière d'une rotule d'action limitée, centrée sur ledit axe de pas; et un tirant rigide (6) relie ladite butée élastique audit moyeu (4C) du rotor.
Lesperance & Martineau S.e.n.c.
Mouille Rene
LandOfFree
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