ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Position and attitude measuring method of auxiliary fuel tank based on color-coding in wind tunnel
Received date: 2014-05-20
Revised date: 2014-08-29
Online published: 2014-09-01
Supported by
National Natural Science Foundation of China (51375075); Science Fund for Creative Research Groups of the National Natural Science Foundation of China (51321004)
Position and attitude parameters measured during the separation of fuel tanks from the high-speed flying aircraft are of great importantance in aircraft and auxiliary fuel tanks design. Pose parameter measuring needs to be carried out in wind tunnel environments with airflows in which highly simulated aircraft is flying, utilizing a high-speed non-contact measurement. The measurement of target position and attitude becomes even difficult due to the constraints from the observing window and shape of the target. To reduce impacts from the observing window and the complex wind tunnel environment on the quality of captured images, an image acquisition method based on self-luminous units has been proposed, through which a clearer image sequence has been obtained. Moreover, a markers matching method based on the surrounding color-coding self-luminous units is presented to achieve high-precision matching of markers in complex wind tunnel environment. Finally, pose parameters of the auxiliary fuel tank can be calculated by analyzing the 3D coordinates of markers on the surface of the model. The experimental results indicate that the proposed method satisfies the measurement requirements, the maximum displacement error does not exceed 0.102 mm and the maximum angle error is less than 0.201°.
LIU Wei , SHANG Zhiliang , MA Xin , ZHANG Yang , LI Xiao , JIA Zhenyuan . Position and attitude measuring method of auxiliary fuel tank based on color-coding in wind tunnel[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(5) : 1556 -1563 . DOI: 10.7527/S1000-6893.2014.0202
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