著者

Yasuaki SAKAMOTO Kazuhide KURODA Shunsuke ONIBUCHI Susumu HARA

出版者

International Symposium on Space Technology and Science

雑誌

Journal of Evolving Space Activities (ISSN:27581802)

巻号頁・発行日

vol.1, pp.62, 2023 (Released:2023-08-30)

参考文献数

9

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Small rockets using hybrid rocket engines have been developed as a part of space development projects by student groups at various universities. The actively developed technologies include supersonic rockets and self-built engines. However, development based on aerodynamic technology has few precedents. In this paper, a case is described in which the Nagoya University Aerospace Flight Technology NAFT demonstrated attitude control technology, which is indispensable for rockets, by using aerodynamic technology. The main mission of the Masterpiece-05 Leidenschaft launch vehicle used for this launch demonstration was to achieve autonomous attitude control by rolling with movable fins. The goal was to roll the rocket by 45 deg after the engine burnout was stopped. The control law for the roll attitude control was proportionalderivative control, and the value of the gain was determined by estimating the torque in the roll direction generated by the movable fins using computational fluid dynamics. The launch took place during the Izu-Oshima Joint Launch Experiment (Izu-Oshima Space Event) held on November 9–11, 2018. The altitude and attitude of the airframe were logged. After stopping the roll of the airframe, attitude control was performed from 3.90 to 8.45 s after ignition. As a result, the phase difference between the roll attitude angle at the start of attitude control and the converged roll attitude angle at the end of attitude control was approximately 51.8 deg. The mission was confirmed to have been accomplished based on the numerical values of the roll attitude angle obtained from the data logger. These efforts are significant from the viewpoint of educational value in space engineering because there are few examples of extracurricular activities wherein students take such initiatives.