宇宙科学広報・普及主幹付
基本情報
- 所属
- 国立研究開発法人宇宙航空研究開発機構 宇宙科学研究所 宇宙機応用工学研究系
- 研究者番号
- 10415896
- J-GLOBAL ID
- 202001008437142898
- researchmap会員ID
- R000015178
研究キーワード
1経歴
1-
2005年4月 - 現在
論文
30-
Acta Astronautica 213 665-675 2023年12月
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Proceedings of the International Astronautical Congress, IAC 2023-October 2023年A 6U CubeSat “OMOTENASHI” was developed to be the world's smallest moon lander. It was launched by NASA's SLS Artemis-1 on November 16, 2022. However, because of the spacecraft anomaly, the battery was depleted and the communication with the spacecraft had been lost. After we gave up the moon landing experiment, we have been conducting a search and rescue operation till September 2023. But it was unsuccessful, unfortunately. In this article, the mission objective, the spacecraft design, the planed mission scenario, and the in-orbit operation results are presented. Additionally, lessons learned from the development and the in-orbit operation are presented.
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Active vibration suppression control for multiple mechanical coolers on board observation satellitesAIAA Scitech 2020 Forum 1 2020年This paper describes a method providing active vibration control of multiple mechanical coolers for space applications. Typical observation satellites have multiple mechanical coolers and their induced micro vibrations degrade pointing accuracy and cooler efficiency. In order to reduce such the vibration, active control is proposed. However, in the conventional control method for mechanical coolers, only considers the vibration of a single cooler and single axis has considered. Here we propose a method to simultaneously control the vibration of a satellite equipped with multiple mechanical coolers. We will discuss the condition of controllability, and actuator position and direction, and present the result of a simulation study.
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Proceedings of SPIE - The International Society for Optical Engineering 11444 2020年The X-Ray Imaging and Spectroscopy Mission (XRISM) is the successor to the 2016 Hitomi mission that ended prematurely. Like Hitomi, the primary science goals are to examine astrophysical problems with precise high-resolution X-ray spectroscopy. XRISM promises to discover new horizons in X-ray astronomy. XRISM carries a 6 x 6 pixelized X-ray micro-calorimeter on the focal plane of an X-ray mirror assembly and a co-aligned X-ray CCD camera that covers the same energy band over a large field of view. XRISM utilizes Hitomi heritage, but all designs were reviewed. The attitude and orbit control system were improved in hardware and software. The number of star sensors were increased from two to three to improve coverage and robustness in onboard attitude determination and to obtain a wider field of view sun sensor. The fault detection, isolation, and reconfiguration (FDIR) system was carefully examined and reconfigured. Together with a planned increase of ground support stations, the survivability of the spacecraft is significantly improved.
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Proceedings of the International Astronautical Congress, IAC 2020-October 2020年A 6U CubeSat “OMOTENASHI” will be the world's smallest moon lander which is launched by NASA SLS Artemis-1. Because of its severe mass and size limitation, it will adopt semi-hard landing scheme. That is, OMOTENASHI is decelerated from orbital velocity to less than 50 m/s by a small solid rocket motor and shock absorption mechanism has been developed to withstand the high-speed impact. Ultra small communication system (X-band and P-band) is also developed. It observes radiation environment of Earth and moon region with portable dosimeters. This paper shows the mission outline, the design, and the development results of OMOTENASHI.
MISC
47書籍等出版物
1講演・口頭発表等
16-
SPACEOPS 2023 the 17th international conference on space operations 2023年3月6日
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73rd International Astronautical Congress 2022年9月22日
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33rd International Symposium on Space Technology and Science 2022年3月1日
共同研究・競争的資金等の研究課題
3-
日本学術振興会 科学研究費助成事業 基盤研究(A) 2013年5月 - 2018年3月
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日本学術振興会 科学研究費助成事業 基盤研究(B) 2010年4月 - 2014年3月
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日本学術振興会 科学研究費助成事業 学術創成研究費 2004年 - 2008年
