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Open AccessTechnical Note

Remote and Feedback Control of the Flap Angle in a Wind Tunnel Test Model by Optical Measurement

1
The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu, Tokyo 182-8585, Japan
2
Japan Aerospace Exploration Agency (JAXA), 7-44-1, Jindaiji-Higashi, Chofu, Tokyo 182-8522, Japan
*
Author to whom correspondence should be addressed.
Aerospace 2020, 7(2), 11; https://doi.org/10.3390/aerospace7020011
Received: 28 November 2019 / Revised: 24 January 2020 / Accepted: 29 January 2020 / Published: 31 January 2020
We have developed a remote and precise feedback control system using optical measurement technology to alter the angle of a flap, which is part of a wind tunnel test model, automatically and to earn the aerodynamic data efficiently. To rectify the wasteful circumstance that Japan Aerospace Exploration Agency (JAXA)’s low-turbulence wind tunnel stops ventilation every time to switch model configurations, we repaired hardware for remote operation and generated software for feedback control. As a result, we have accomplished a system that dramatically advances the efficiency of wind tunnel tests. Moreover, the system was able to consider the deformation of the model through optical measurement; the system controlled flap angles with errors less than the minimum resolution of optical measurement equipment. Consequently, we successfully grasped the nonlinearity of three aerodynamic coefficients C L , C D , and C M p that was impossible so far. View Full-Text
Keywords: remote operation; feedback control; optical measurement; wind tunnel test; aerodynamic characteristics; aircraft; flap remote operation; feedback control; optical measurement; wind tunnel test; aerodynamic characteristics; aircraft; flap
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MDPI and ACS Style

Chiba, K.; Komatsu, T.; Kato, H.; Nakakita, K. Remote and Feedback Control of the Flap Angle in a Wind Tunnel Test Model by Optical Measurement. Aerospace 2020, 7, 11.

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