作者：王泽峰, 胡晓庆

作者单位：中国飞行试验研究院, 陕西 西安 710089

关键词：直升机;桨叶;挥舞;挠度测量;应变计

摘要：

直升机旋翼桨叶挥舞方向的挠度是一个非常重要的关键参数，直接影响旋翼开关车包线验证的安全性。为获得桨叶在旋转过程中的挥舞方向实时挠度的测量方法，首先基于梁的弯曲假设理论分析，结合传统的电阻应变计法，提出一种桨叶挥舞方向挠度测量的方法；其次，对于该测量方法，进行有限元仿真，建立计算挠度和外载荷之间的拟合结果，初步验证方法的正确性；最后，通过地面试验，实测桨叶挥舞方向挠度和电桥输出，拟合验证该方法的正确性和可行性。该方法为后续直升机包线扩展飞行试验过程中桨叶挠度测量提供很好的技术支持。

Research on deflection measurement of helicopter blade based on strain gauge method
WANG Zefeng, HU Xiaoqing
Chinese Flight Test Establishment, Xi'an 710089, China
Abstract: The deflection of the flapping direction of helicopter rotor blade is a very important key parameter, directly impacts on the safety of rotor switch car envelope verification. In order to obtain the real-time deflection measurement method of blade swing direction in the process of rotation, First of all, based on the theoretical analysis of beam bending assumption, combined with the traditional resistance strain gauge method, a method of measuring the deflection of blade swing direction is proposed; Secondly, for the measurement method, the finite element simulation is carried out, and the fitting results between the calculated deflection and the external load are established, preliminarily verifies the correctness of the method; Finally, through the ground test, the deflection of the blade flapping direction and the output of the bridge are measured, and the correctness and feasibility of the method are verified. This method provides a good technical support for the measurement of blade deflection in the subsequent helicopter envelope extended flight test.
Keywords: helicopter;rotor blade;flapping;deflection measurement;strain gauge
2020, 46(4):42-46  收稿日期: 2019-08-18;收到修改稿日期: 2019-11-25
基金项目:
作者简介: 王泽峰(1985-),男,陕西榆林市人,高级工程师,硕士,主要从事直升机飞行试验技术研究
参考文献
[1] 路录祥, 王新洲, 王遇波. 直升机结构与设计[M]. 北京:航空工业出版社, 2009:115-124.
[2] 马强, 朱旭程. 舰载直升机起飞着舰事故模型影响及危害性分析[J]. 海军航空工程学院学报, 2012, 27(2):210-215
[3] 常斌, 王海, 杨林. 舰载直升机的研究现状与发展趋势[J]. 飞行力学, 2016, 34(3):8-13
[4] 张呈林, 郭才根. 直升机总体设计[M]. 北京:国防工业出版社, 2006:131-139.
[5] 吴瑞娟, 左泽敏, 冀芳. 一种飞机结构变形测量的新方法[J]. 科学技术与工程, 2015, 15(7):265-230
[6] 肖振中. 基于工业摄影和机器视觉的三维形貌与变形测量关键技术研究[D]. 西安:西安交通大学, 2010.
[7] 魏斌, 梁晋, 李洁, 等. 大型上单翼飞机机翼三维全场变形测量方案[J]. 航空学报, 2017, 38(7):1-8
[8] 凌桂龙, 丁金滨, 温正. ANSYS Workbenhch13.0从入门到精通[M]. 北京:清华大学出版社, 2012:187-1191.
[9] FURST D, KEBLER C, AUSPITZER T. Closed loop IBC-system and flight test results on the CH-53G helicopter[C]//The American Helicopter Society 60th Annual Forum, 2004:247-256.