航空学报2025，Vol.46Issue(24)：91-99,9.DOI:10.7527/S1000-6893.2025.31863
旋翼桨叶结构载荷光纤布拉格光栅传感试飞技术
Flight test measurement for structural load of rotor blade based on fiber Bragg grating
摘要
Abstract
Fiber Bragg Grating(FBG)sensors are used to characterize the structural loads of rotor blades.An FBG sensing network and its airborne measurement system are designed for in-flight measurement of rotor blade structural loads.In flight testing,a single-load calibration method based on the differential algorithm of FBG response information was employed to obtain the load model coefficient matrix,and a method for determining the actual installation angle of the blade section is proposed.Data analysis shows that the load model error meets the engineering requirement of less than 5%for in-flight measurement.Comparison of FBG sensing results with strain gauge measurements demon-strates the feasibility of FBG-based synchronous dynamic in-flight measurement of rotor blade structural loads,accu-mulating experience for helicopter strength flight tests based on FBG sensing technology.关键词
直升机/旋翼/桨叶/结构载荷/FBG/飞行试验Key words
helicopter/rotor/blade/structural loads/fiber Bragg grating/flight test分类
航空航天引用本文复制引用
CHENG Weizhen,WANG Zefeng,GENG Lisong,ZHENG Jiahong,JIAO Shuaike,LI Kang..旋翼桨叶结构载荷光纤布拉格光栅传感试飞技术[J].航空学报,2025,46(24):91-99,9.基金项目
直升机动力学全国重点实验室基金(61422202104) National Key Laboratory Foundation of Helicopter Aeromechanics(61422202104) （61422202104）
