直升机旋翼轴载荷测量试飞研究  

Test flight study of helicopter rotor shaft load measurement

作　　者：郑甲宏[1] 马丁峰 焦帅克 ZHENG Jiahong;MA Dingfeng;JIAO Shuaike(Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《中国测试》2021年第4期152-157,共6页China Measurement & Test

基　　金：海军装备部某直升机型号研制项目基金(12387/4006)。

摘　　要：为实测及研究飞行状态下的直升机旋翼轴弯矩、扭矩及拉力,提出一种旋翼轴飞行载荷测量方法。首先对旋翼轴应变电桥的布局进行分析,解决弯矩、扭矩及拉力应变电桥耦合的问题;然后通过载荷地面标定试验及飞行试验,动态同步实测不同飞行状态下的旋翼轴载荷,并对飞行数据的有效性进行验证;最后根据实测的试飞数据,对旋翼轴受载严重的试飞科目平飞、斜坡着陆、俯冲拉起进行分析。结果表明:旋翼轴拉弯扭应变电桥的解耦方案可行,旋翼轴飞行载荷测量方法可靠,实测数据准确,旋翼轴载荷的分析可为旋翼轴载荷谱的编制、结构改型及寿命评估提供依据。In order to measure and study the bending moment,torque and tension of rotor shaft in flight condition.In this paper,the layout of rotor shaft strain bridge was studied and the coupling of bending moment,torque and tension was solved.Then the rotor shaft load in different flight conditions was measured dynamically and synchronously by load ground calibration test and flight test,and the validity of flight data was verified.Finally,according to the measured flight test data,the flight test subjects of serious load of rotor shaft was analyzed and studied.The results show that the decoupling scheme of rotor shaft tension-bending and torsion strain bridge is feasible and the measured flight data are accurate and reliable.The analysis of rotor shaft load can provide the basis for the compilation of rotor shaft load spectrum,structural modification and life evaluation.

关 键 词：直升机 旋翼轴 飞行试验 载荷 应变测量 

分 类 号：V217[航空宇航科学与技术—航空宇航推进理论与工程]