The invention provides a coaxial dual-rotor transient pitch prediction method. The method comprises the following steps: establishing a finite element model of a blade unit; deducing a kinetic equation of a rotor and fuselage coupling system according to the finite element model of the blade unit; using a free wake model to calculate the induced velocity of each position of the blade; according to the induced speed of each position of the blade, calculating the aerodynamic load of the blade; substituting the aerodynamic load of the blade into a kinetic equation of the rotor and fuselage coupling system, and calculating to obtain a transient response of the blade; and converting the blade transient response into a blade tip spacing.

    本申请提供了一种共轴双旋翼瞬态桨尖间距预测方法,所述方法包括:建立桨叶单元的有限元模型;根据所述桨叶单元的有限元模型,推导旋翼与机身耦合系统的动力学方程;使用自由尾迹模型,计算得到桨叶各个位置的诱导速度;根据所述桨叶各个位置的诱导速度,计算得到桨叶的气动载荷;将所述桨叶的气动载荷代入所述旋翼与机身耦合系统的动力学方程,计算得到桨叶瞬态响应;将所述桨叶瞬态响应转换为桨尖间距。


    Access

    Download


    Export, share and cite



    Title :

    Coaxial dual-rotor transient pitch prediction method


    Additional title:

    一种共轴双旋翼瞬态桨尖间距预测方法


    Contributors:
    FAN FENG (author) / ZHAO JINRUI (author) / YU ZHIHAO (author) / HUANG SHUILIN (author) / HUANG JIAN (author) / CHENG YI (author) / HE ZIHAO (author) / JIANG QIHUANG (author) / ZHANG SHIMING (author) / DUAN JINFAN (author)

    Publication date :

    2025-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



    Coaxial helicopter and flexible variable-pitch rotor wing

    FAN JIAMING | European Patent Office | 2021

    Free access

    Variable-pitch coaxial oil-driven six-rotor helicopter

    HU FENGYAN | European Patent Office | 2016

    Free access

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

    DAI MENGYI | European Patent Office | 2019

    Free access

    Thrust Agility of Variable Pitch in Coaxial Rotor Pairs

    Chen, Ruby / Zhao, HongYang / Al-Zubaidi, Salim et al. | IEEE | 2025


    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