基于光纤光栅的直升机桨叶应变试飞研究

发布时间：2018-02-06 06:17

本文关键词： 光纤光栅应变桨叶应变飞行试验直升机　出处：《应用力学学报》2016年03期 　论文类型：期刊论文

【摘要】：研制了基于光纤布拉格光栅(FBG)传感原理的光纤光栅应变机载测试系统,并应用于直升机旋翼桨叶的外场试飞测试,使直升机桨叶应变试飞实现了光学传感。首先基于等强度梁开展电学应变计与FBG应变计的对比测试,验证了两者测量应变的一致性;其次搭建桨叶运动姿态物理仿真平台,并开展基于模拟桨叶的FBG挥舞弯曲应变测试,初步验证了FBG应用于桨叶应变测试的可行性;最后在直升机飞行试验中,使用FBG网络动态测量桨叶多剖面的分布式挥舞弯曲应变,并分析和对比电学应变计与FBG传感器阵列的实测数据,验证了分布式FBG网络应用于直升机桨叶试飞的技术可行性。
[Abstract]:A fiber Bragg grating strain measurement system based on fiber Bragg grating (FBG) sensing principle is developed and applied to the external field test of helicopter rotor blade. The optical sensing of helicopter blade strain flight is realized. Firstly, the consistency of strain measurement between electric strain gauge and FBG strain gauge is verified based on equal strength beam. Secondly, the physical simulation platform of blade motion attitude is built, and the bending strain test of FBG swing based on simulated blade is carried out, which preliminarily verifies the feasibility of applying FBG to blade strain measurement. Finally, in the helicopter flight test, FBG network is used to dynamically measure the distributed branching bending strain of the blade multi-section, and the measured data of the electric strain gauge and the FBG sensor array are analyzed and compared. The technical feasibility of applying distributed FBG network to helicopter blade flight test is verified.
【作者单位】：中国飞行试验研究院飞机所;
【分类号】：V275.1

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