The invention discloses a two-steering-engine direct-drive coaxial rotor system and a control strategy, and belongs to the technical field of helicopter structures. The system comprises an upper rotorwing power module, an upper rotor wing assembly, an upper tilting mechanism, a driving steering engine group assembly, a lower tilting mechanism, a lower rotor wing assembly, a lower rotor wing powermodule, an upper fixed main shaft and a lower fixed main shaft. The two steering engines simultaneously drive an upper-layer tilting turntable and a lower-layer tilting turntable to perform periodicvariable-pitch control on an upper-layer rotor wing and a lower-layer rotor wing, and lifting and heading control force is provided by controlling the rotating speeds of the rotor wings. The tilting mechanisms provided by the invention can perform azimuth angle deviation in advance, and a flexible design scheme is provided for different rotor characteristics. Compared with a disclosed single-layerperiodic variable-pitch coaxial aircraft, the coaxial rotor system has more sufficient control efficiency and higher wind resistance. Compared with a disclosed double-layer periodic variable-pitch coaxial aircraft, the coaxial rotor system has the advantages that the number of steering engines is the minimum, the structure is simple, the system reliability is effectively improved, and the structural weight is greatly reduced.

    本发明公开了一种两舵机直驱共轴旋翼系统及控制策略,属于直升机的结构技术领域。包括上旋翼动力模块,上旋翼组件,上倾转机构,驱动舵机群组件,下倾转机构,下旋翼组件,下旋翼动力模块,上固定主轴,下固定主轴。本发明通过两个舵机同时驱动上层倾转盘、下层倾转盘,对上下两层旋翼进行周期变距控制,并通过控制旋翼转速提供升降和航向操纵力。本发明的倾转机构可以提前进行方位角度偏移,为不同旋翼特性提供了灵活的设计方案。与已公开的单层周期变距的共轴飞行器相比,具有更加充足的操纵效率和更高的抗风性能,与已公开的双层周期变距的共轴飞行器相比,具有最少的舵机数量和简洁的结构,有效提升了系统可靠性并大幅降低了结构重量。


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    Title :

    Two-steering-engine direct-drive coaxial rotor system and control strategy


    Additional title:

    一种两舵机直驱共轴旋翼系统及控制策略


    Contributors:
    GE XUN (author) / SHEN YUAN (author) / GUO SHUZHEN (author) / LI LIANGWEI (author) / LIU WEIDONG (author)

    Publication date :

    2020-04-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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