ACTA AERONAUTICAET ASTRONAUTICA SINICA >
3D full-field wing deformation measurement method for large high-wing airplanes
Received date: 2016-10-16
Revised date: 2016-12-07
Online published: 2017-01-09
Supported by
National Natural Science Foundation of China (51675404,51421004)
A non-contact vision measurement system containing heavily sloped cameras is developed to measure 3D full-field wing deformation of the large high-wing airplane during the process of flying. In order to adapt to the structure of high-wing aircraft, pre-positioning internal parameters and relative parameters cameras, as a conjugate group, be installed on the aircraft vertical tail, to collect wing deformation images during flying. Concurrent speckle matching method for overlarge inclined angle is proposed, to solve the matching failure problem, which is caused by low correlation for images collected when wings are at large angle of inclination. Since the cameras are installed at the vertical tail, and would be affected by flight vibration, a real-time inverse calculation camera position method, using fixed pre-stretched points on the top of the plane, is presented to decrease the camera positioning error. Finally, a full-field wings' deformation measurement system, contains software and hardware, is developed, and simulated on a special built scaled theoretical wing model test bench to verify the measurement accuracy of this system. The simulation results prove the efficiency and feasibility of this proposal, and it has guiding significance for real aircraft measurement.
WEI Bin , LIANG Jin , LI Jie , REN Maodong . 3D full-field wing deformation measurement method for large high-wing airplanes[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017 , 38(7) : 120859 -120859 . DOI: 10.7527/S1000-6893.2016.120859
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