ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Aircraft all movable canard load flight measurement technology
Received date: 2014-10-16
Revised date: 2015-01-20
Online published: 2015-04-27
According to the structural characteristics and load measurement requirements of modern canard aircraft, a method using strain gauge modification at the outer edge of canard shaft profile is presented in this paper. In order to achieve the purpose that a strain bridge is sensitive for the corresponding load and has smaller response to other loads, strain gauges at different sides are used in a particular manner to compose certain Wheatstone bridge. So that moment, torque and shear loads from strain response are mechanically decoupled. Factors of canard moment, torque and shear load are mechanically decoupled from the strain response. In the load calibration tests, upward calibration loads are imposed on both left and right canards symmetrically at the same time, and the weight of the aircraft and rear fuselage bracket are used to balance the movements and rotation caused by loads. Therefore, there is no necessity to constrain and fasten the aircraft in a complex way. Through the analysis of the calibration test data, the model of canard loads is established and verified with multiple linear regression method. Meanwhile, typical flight status is selected to analyze the actual flight loads of canard in all the cases and severe flight load state is obtained.
CAO Jingtao . Aircraft all movable canard load flight measurement technology[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(4) : 1135 -1141 . DOI: 10.7527/S1000-6893.2015.0028
[1] Jiang Z G, Tian D S. Environment load/spectrum of aircraft structure[M]. Beijing: Publishing House of Electronics Industry, 2012: 260-267 (in Chinese). 蒋祖国, 田丁栓. 飞机结构载荷/环境谱[M]. 北京: 电子工业出版社, 2012: 260-267.
[2] Li W J, Wang Z P. The aircraft conceptual design[M]. Xi'an: Northwestern Polytechnical University Press, 2005: 129-135 (in Chinese). 李为吉, 王正平.飞机总体设计[M].西安: 西北工业大学出版社, 2005: 129-135.
[3] Skopinski T H, Aiken W S, Jr, Huston W B. Calibration strain-gage installations in aircraft structures for the measurement of flight loads, NACA Report 1178[R]. Hampton: Langley Aeronautical Laboratory, 1954.
[4] Lokos W A, Olney C D, Chen T. Strain-gage loads calibration testing of the active aeroelastic wing F/A-18 airplane 2926[R]. Edwards, CA: NASA Dryden Flight Research Center, 2002.
[5] Kliqko М Л. Aircraft strength test (static load)[M]. Tang J C, translated. Xi'an: ASST Engineering Office of Ministry of Aeronautics and Astronautics, 1992: 21-23 (in Chinese). М.Л.克利亚奇科. 飞机强度飞行试验(静载荷)[M].汤吉晨, 译. 西安: 航空航天部《ASST》系统工程办公室, 1992: 21-23.
[6] Liu H W, Lu R K. Material mechanics experiment[M]. Beijing: Higher Education Press, 2005: 47-52, 72-83 (in Chinese). 刘鸿文, 吕荣坤. 材料力学实验[M]. 北京: 高等教育出版社, 2005: 47-52, 72-83.
[7] Wu Z D, Tao B Q. Strain measurement principle and technology[M]. Beijing: National Defense Industry Press, 1982: 34-37 (in Chinese). 吴宗岱, 陶宝琪. 应变测量原理及技术[M]. 北京: 国防工业出版社, 1982: 34-37.
[8] Theoretical Mechanics Teaching and Research Section of Harbin Institute of Technology. Theoretical mechanics[M]. 4th ed. Beijing: Higher Education Press, 1993: 180-206 (in Chinese). 哈尔滨工业大学理论力学教研室. 理论力学[M]. 4版. 北京: 高等教育出版社, 1993: 180-206.
[9] Li Q Y, Guan Z, Bai F S. Numerical calculation principle[M]. Beijing: Tsinghua University Press, 2000: 154-168 (in Chinese). 李庆杨, 关治, 白峰杉. 数值计算原理[M]. 北京: 清华大学出版社, 2000: 154-168.
[10] Zhang X D. Matrix analysis and applications [M]. Beijing: Tsinghua University Press, 2004: 75-78 (in Chinese). 张贤达. 矩阵分析与应用[M]. 北京: 清华大学出版社,2004: 75-78.
[11] Zhao Y. Based on genetic algorithm and the evaluation model of flight load test research[J]. Acta Aeronautica et Astronautica Sinica, 2014, 35(9): 2506-2512 (in Chinese). 赵燕. 基于遗传算法与评估模型的飞行载荷实测研究[J]. 航空学报, 2014, 35(9): 2506-2512.
[12] Yan C L , Zhang S M , Zhuo N S. Mechanical model and data treatment of load measurement test for aircraft wing strutures[J]. Acta Aeronautica et Astronautica Sinica, 2000, 21(1): 56-59 (in Chinese). 阎楚良, 张书明, 卓宁生. 飞机机翼结构载荷测量试验力学模型与数据处理[J]. 航空学报, 2000, 21(1): 56-59.
[13] Guo Z W, Cao J T, Jiang Q D, et al. The aircraft double vertical tail load balance calibration[J]. Strength and Environment, 2009, 36(4): 19-23 (in Chinese). 郭正旺, 曹景涛, 蒋启登, 等. 飞机双垂尾载荷自平衡校准[J]. 强度与环境, 2009, 36(4): 19-23.
/
| 〈 |
|
〉 |
CJA