The invention discloses a variable sweepback rotor blade, and relates to the field of helicopters.The variable sweepback rotor blade comprises a fixed blade, a movable blade, a connecting rod, a sleeve, a piston, an air pressure pipeline, an air compression assembly and an air suction assembly, the movable blade is hinged to the lower portion of the fixed blade, the sleeve is fixed to the upper portion of the fixed blade, and the piston is slidably installed at one end of the sleeve; the two ends of the connecting rod are hinged to the outer end of the piston and the upper end of the movable paddle correspondingly, the other end of the sleeve communicates with the air pressure pipeline, and the air compression assembly and the air suction assembly communicate with the end, away from the sleeve, of the air pressure pipeline and are used for driving the piston to reciprocate relative to the sleeve. And the movable paddle is driven by the connecting rod to rotate relative to the fixed paddle. According to the variable-sweepback rotor blade, high-speed impulse noise is effectively controlled, and meanwhile, the flutter situation in the flying process is greatly reduced.
本发明公开一种可变后掠的旋翼桨叶,涉及直升机领域,包括固定桨叶、活动桨叶、连杆、套筒、活塞、气压管道、压气组件和吸气组件,活动桨叶铰接于固定桨叶的下部,套筒固定于固定桨叶的上部,活塞滑动安装于套筒的一端,连杆的两端分别与活塞的外端和活动桨叶的上端铰接,套筒的另一端与气压管道连通,压气组件和吸气组件均与气压管道远离套筒的一端连通,压气组件和吸气组件用于驱动活塞相对于套筒往复运动,进而通过连杆带动活动桨叶相对于固定桨叶转动。本发明中的可变后掠的旋翼桨叶在实现对高速脉冲噪声的有效控制的同时,使得飞行时出现颤振的情况大大减少。
Variable sweepback rotor blade
一种可变后掠的旋翼桨叶
2022-12-13
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |