The embodiment of the invention discloses a variable-diameter blade for a variable-speed rotor of a helicopter, and relates to the technical field of rotor aircrafts. A balancing weight is installed in an external paddle guide rail and connected with paddles through springs, meanwhile, a flexible rope is wound around a pulley of a fixed cross rod installed on the paddles to be connected with the balancing weight and the external paddles, and the external paddles are arranged in the paddles in a sleeved mode with the smaller size and the same shape. When the rotating speed of the rotor is increased, the balancing weight moves outwards, the external blades move inwards relative to the blades, and the radius of the rotor is reduced on the contrary. The variable-diameter paddle is simple in structure, easy to use and relatively convenient to produce and maintain, and the diameter can be adaptively changed according to the rotating speed of the rotor. The blade is suitable for the variable-speed rotor wing.

    本发明实施例公开了一种用于直升机变转速旋翼的变直径桨叶,涉及旋翼飞行器技术领域。本发明包括:一个配重块安装在外部桨叶导轨中,通过弹簧与桨叶连接,同时有一柔性绳绕过安装在桨叶上的固定横杆的滑轮连接配重块和外部桨叶,外部桨叶以稍小的尺寸和相同的形状套在桨叶内。当旋翼转速增加时,配重块向外移动,外部桨叶相对于桨叶向内运动,旋翼半径反而减小。从而设计了一种结构简单易用,生产、维修相对方便的变直径桨叶,能够根据旋翼转速自适应改变直径。本发明适用于变转速旋翼的桨叶。


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    Title :

    Variable-diameter blade for variable-speed rotor wing of helicopter


    Additional title:

    一种用于直升机变转速旋翼的变直径桨叶


    Contributors:
    LOU YULING (author) / HAN DONG (author) / LIU RUNFU (author)

    Publication date :

    2024-04-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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