宇宙科学広報・普及主幹付
Profile Information
- Affiliation
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- Researcher number
- 10415896
- J-GLOBAL ID
- 202001008437142898
- researchmap Member ID
- R000015178
Research Interests
1Research Areas
1Research History
1-
Apr, 2005 - Present
Papers
30-
Acta Astronautica, 213 665-675, Dec, 2023
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Proceedings of the International Astronautical Congress, IAC, 2023-October, 2023A 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, 2020This 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, 2020The 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, 2020A 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-
The 33rd Workshop on JAXA Astrodynamics Symposium and Flight Mechanics, Jul, 2023レポート番号: ASTRO-2023-A006(025)/In-person
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
Books and Other Publications
1Presentations
16-
SPACEOPS 2023 the 17th international conference on space operations, Mar 6, 2023
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73rd International Astronautical Congress, Sep 22, 2022
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33rd International Symposium on Space Technology and Science, Mar 1, 2022
Research Projects
3-
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, May, 2013 - Mar, 2018
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2010 - Mar, 2014
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Grants-in-Aid for Scientific Research Grant-in-Aid for Creative Scientific Research, Japan Society for the Promotion of Science, 2004 - 2008
