An upper rotor semi differential yawing control system for a coaxial unmanned helicopter comprises a lower rotor collective pitch and cyclic pitch motion control system and an upper rotor collective pitch and cyclic pitch motion control system; the lower rotor collective pitch and cyclic pitch motion control system is in a lower rotor shaft; the upper rotor collective pitch and cyclic pitch motion control system is located on an upper rotor shaft; and the two systems are mutually independent. The invention adopts upper rotor yawing control mode to simplify the mechanical structure of the lower rotor control system of the conventional coaxial helicopter, and mechanical structures of the upper rotor control system and the yawing control system are relatively simple; the lengths of the upper rotor shaft and lower rotor shaft are shortened to make full use of the space between the upper rotor system and the lower rotor system, and to reach compact structure and high space utilization rate; and the risk of dynamic problem of the upper rotor shaft and the lower rotor shaft as slender shafts can be greatly reduced.


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    Title :

    Upper rotor semi differential yawing control system for coaxial unmanned helicopter


    Contributors:
    HU FENGYAN (author)

    Publication date :

    2016-01-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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