导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2020, Vol. 41 ›› Issue (10): 223808-223808.doi: 10.7527/S1000-6893.2020.23808

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Monitoring technique for shape reconstruction of variable camber trailing edge based on optical fiber sensors

YU Huiyong1, LI Huafeng1, ZENG Jie1, XU Zhiwei1, HUANG Jiwei1, ZHAO Qidi2   

  1. 1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. Science and Technology on Metrology and Calibration Laboratory, Changcheng Institute of Metrology and Measurement, Beijing 100095, China
  • Received:2020-01-07 Revised:2020-03-10 Published:2020-03-06
  • Supported by:
    Aeronautical Science Foundation of China (20170252004,20185644006); Shanghai Aerospace Science and Technology Innovation Fund (SAST2018-015); Jiangsu Provincial Key Research and Development Plan-Industry Foresight and Common Key Technology-Competitive Project (BE2018047)

Abstract: The variable camber wing as a variable-wing aircraft can be adaptively adjusted according to different flight environments to improve its flight efficiency, thereby adapting to complex and diverse mission environments. This paper studies a trailing-edge morphological reconstruction method based on distributed fiber Bragg grating sensors to meet the demand for real-time monitoring of the morphology and deflection of the variable camber trailing edge. In addition, numerical simulation is employed to analyze the morphological changes of the variable camber trailing edge, whence obtaining the relationship between the deflection displacement and the deflection of the variable camber trailing edge. Meanwhile, the layout form of the fiber Bragg grating sensor is presented, as well as the construction of the trailing-edge morphology and deflection monitoring system based on the reconstruction principle of recursive displacement of strain and curvature information. The relative error of trailing-edge morphological reconstruction based on the fiber Bragg grating sensor is about 6.39%, and that of deflection identification is about 7.47%. The research results show that the method proposed in this paper can provide technical support for morphology sensing, attitude adaptive adjustment and aerodynamic shape optimization of the variable camber trailing edge.

Key words: variable camber trailing edge, fiber Bragg grating sensors, curvature recursion method, morphological reconstruction, deflection

CLC Number: