The invention provides a helicopter undercarriage landing load measuring method. The method comprises the steps that at least ten strain gauges are pasted to the position of a wheel shaft; acquiring tension and compression strain, shear strain, bending strain and torsional strain of the strain gauge; determining a course load, a lateral load and/or a vertical load during landing of the helicopter undercarriage based on the tension and compression strain, the shear strain, the bending strain and the torsional strain of the strain gauges; according to the method, analysis and calculation of ground three-way loads transmitted to an undercarriage axle in a helicopter landing process are realized, a strain-to-load reverse derivation process is supplemented by traditional load-to-strain forward derivation, and interference of nonlinear superposition of combined loads on ground load calculation and solution is eliminated; and the position requirement that the strain gauges need to meet one-way load sensitivity is reduced, and good universality is achieved.

    本申请提供了一种直升机起落架着陆载荷测量方法,所述方法包括:在轮轴位置粘贴至少10片应变片;获取所述应变片的拉压应变、剪应变、弯曲应变和扭转应变;基于所述应变片的拉压应变、剪应变、弯曲应变和扭转应变,确定直升机起落架着陆时的航向载荷、侧向载荷和/或垂直向载荷;本申请实现直升机着陆过程中地面三向载荷传递到起落架轮轴处的分析计算,由传统载荷到应变的正向推导补充了应变到载荷的反向推导过程,消除组合载荷的非线性叠加对地面载荷计算求解的干扰,降低了应变片布设需满足单向载荷敏感的位置要求,具有良好的通用性。


    Access

    Download


    Export, share and cite



    Title :

    Helicopter undercarriage landing load measuring method


    Additional title:

    一种直升机起落架着陆载荷测量方法


    Contributors:
    LI QI (author) / HUANG JIANXIN (author) / AN YIFEI (author) / FENG SHENGQUAN (author) / CHEN XIANG (author)

    Publication date :

    2023-03-21


    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 / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE



    Wheel type undercarriage helicopter landing/ship-borne load calculation method

    WANG YING / YAN FENG / LYU LEFENG et al. | European Patent Office | 2021

    Free access

    Undercarriage facilitating stable landing of unmanned helicopter

    CHEN LUODAN | European Patent Office | 2022

    Free access

    Helicopter skid type undercarriage opening degree measuring device

    GUO HAOYU / GUO BIXIN / CHEN CHANJUAN | European Patent Office | 2023

    Free access

    Helicopter undercarriage fixing device

    LIU DENGYAO / HU HAO / GENG JIPENG et al. | European Patent Office | 2023

    Free access

    Helicopter wheel undercarriage sled

    SONG XIANLONG | European Patent Office | 2015

    Free access