IMPROVEMENTS IN OR RELATING TO ROTORS FOR ROTARY-WING AIRCRAFT

摘要

1298557 Rotary-wing aircraft rotor SUDAVIATION SOC NATIONALE DE CONSTRUCTIONS AERONAUTIQUES 23 Oct 1969 [30 Oct 1968] 51939/69 Addition to 1241960 Heading B7W . A rotor assembly as claimed in Specification 1,241,960 is modified in that the bladecarrying sleeves 3 are mounted leaktightly inside each associated arm 2 to permit rotation and a limited sliding motion governed by a laminated, radially inextensible and torsionally flexible tie 20 between the sleeve 3 and an attachment core 21 within the rotor 1. The inner race of a bearing 4 is retained by the collar of a ring 11, and the outer race abuts against a nylon washer 12. The inner race of a bearing 5 bears against a ring 14 formed internally with a groove receiving a sealing 0-ring 16 which ensures leakfightness. Sleeve 3 is extended outboard by a clevis 8 into which the rotor blade 10a is secured by pins 10, each clevis having secured thereto by a bolt 32 an arm 35 to which a blade pitch control rod 37 is pivoted.