The automatic feathering mechanism comprises a variable-pitch disc, a sliding groove is formed in the side wall of the variable-pitch disc, the sliding groove is in sliding connection with a propeller handle variable-pitch pin, a through hole is formed in the center of the variable-pitch disc, a variable-pitch nut is arranged in the through hole of the variable-pitch disc, and the variable-pitch nut is connected with the variable-pitch disc. The variable-pitch nut is internally in threaded connection with a variable-pitch lead screw, a lower limiting piece is arranged at the lower end of the variable-pitch lead screw, and an upper limiting piece is arranged at the upper end of the variable-pitch lead screw; the variable-pitch disc is connected with the variable-pitch nut in a sliding mode, and a limiting seat is arranged on the outer wall of the variable-pitch nut and located above the variable-pitch disc; the paddle handle variable pitch pin is eccentrically connected with a paddle handle of the paddle, and the axis of the paddle handle of the paddle is not coaxial with the pneumatic center of the paddle. After the power motor fails, unpowered fast feathering can be achieved, fuselage resistance is reduced, and the possibility of safe landing of the aircraft is increased.

    本发明公开了空中变距螺旋桨变距机构无动力自动顺桨机构及螺旋桨,自动顺桨机构包括变距盘,所述变距盘侧壁设置有滑槽,所述滑槽与桨柄变距销滑动连接,所述变距盘中心设置通孔,所述变距盘的通孔中设置变距螺母,所述变距螺母内螺纹连接变距丝杠,所述变距丝杠下端设置有下限位件,所述变距丝杠上端设置有上限位件;所述变距盘与变距螺母滑动连接,所述变距螺母外壁在变距盘上方设置有限位座;所述桨柄变距销偏心连接桨叶的桨柄,所述桨叶的桨柄轴线与桨叶的气动中心非同轴。本发明在动力电机失效后,可以无动力快速顺桨,降低机身阻力,增加飞机安全降落的可能性。


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    Title :

    Unpowered automatic feathering mechanism of variable pitch mechanism of aerial variable pitch propeller and propeller


    Additional title:

    空中变距螺旋桨变距机构无动力自动顺桨机构及螺旋桨


    Contributors:
    ZHENG WEI (author)

    Publication date :

    2024-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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