The invention discloses a hinge-free propeller hub and a helicopter, belongs to the technical field of helicopters, and solves the problems that a hinge-free propeller hub in the prior art adopts a metal bearing and a metal hook, is complex, has high requirements on sealing, assembling, lubricating, precision and working environment, and can cause abrasion, indentations and gaps after long-time working. The hinge-free propeller hub comprises an elastic bearing and a propeller hub central part, the propeller hub central part is arranged on the outer wall of the elastic bearing, and a propeller clamp of the helicopter is arranged on the inner wall of the elastic bearing; the elastic bearing comprises an outer connecting layer, a lamination layer and an inner connecting layer which are sequentially connected in a sleeved mode from outside to inside. The outer connecting layer is fixedly connected with the propeller hub central part; the inner connecting layer is fixedly connected with the paddle clamp; the laminated layer comprises an elastic layer and a rigid layer which are alternately connected in a sleeved mode in the radial direction. The hingeless propeller hub can be used for connecting the propeller hub and the propeller clamp.
本发明公开了一种无铰式桨毂和直升机,属于直升机技术领域,解决了现有技术中无铰式桨毂采用金属轴承金钩复杂、对密封、装配、润滑、精度和工作环境要求高以及长时间工作会出现磨损、压痕和间隙的问题。该无铰式桨毂包括弹性轴承和桨毂中央件;桨毂中央件设于弹性轴承的外壁,直升机的桨夹设于弹性轴承的内壁;弹性轴承从外至内包括依次套接的外连接层、叠层和内连接层;外连接层与桨毂中央件固定连接;内连接层与桨夹固定连接;叠层包括沿径向交替套接的弹性层和刚性层。该无铰式桨毂可用于桨毂和桨夹的连接。
Hingeless propeller hub and helicopter
一种无铰式桨毂和直升机
2023-10-03
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Hingeless variable pitch propeller hub, helicopter rotor wing and helicopter
European Patent Office | 2023
|Aeroelastic instabilities of hingeless helicopter blades
AIAA | 1973
|British Library Conference Proceedings | 2008
|