The present invention provides a centrally positioned pitch control device for a coaxial double-propeller helicopter, belonging to the technical field of helicopter structure. The coaxial double-propeller helicopter comprises an upper propeller hub (2) and a lower propeller hub (18); a blade I (1) being mounted on the outside of the upper propeller hub (2); and a blade II (16) being mounted on the outside of the lower propeller hub (18), characterized in that said centrally positioned pitch control device is located between the upper propeller hub (2) and the lower propeller hub (18). The centrally positioned pitch control device is located at the middle part of a central shaft (19) between the upper propeller hub (2) and the lower propeller hub (18). The centrally positioned pitch control device may shorten the motion transmission distance, decrease the number of conversion links, enhance the control precision and stability, and reduce the manufacturing difficulty.


    Access

    Download


    Export, share and cite



    Title :

    INTER-ROTOR BLADE PITCH CONTROL DEVICE OF COAXIAL DOUBLE-ROTOR HELICOPTER


    Additional title:

    INTERROTORBLATTWINKELSTEUERUNGSVORRICHTUNG EINES HUBSCHRAUBERS MIT KOAXIALEM DOPPELROTOR
    DISPOSITIF DE RÉGLAGE DU PAS DES PALES ENTRE LES ROTORS D'UN HÉLICOPTÈRE À DOUBLE ROTOR COAXIAL


    Contributors:
    DAI MENGYI (author)

    Publication date :

    2019-06-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge





    Coaxial tilting three-rotor blade helicopter

    WU JIAYI | European Patent Office | 2020

    Free access

    Device and method for measuring pitch of coaxial double-rotor helicopter

    GUO CONG / LI QIWEI / ZHOU QIANG et al. | European Patent Office | 2024

    Free access

    Vector coaxial double-rotor helicopter

    SHI ZHIYONG | European Patent Office | 2021

    Free access