JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EEK10100 Subject Category: Space Technology PDF Responsible Representative: Akito Hattori, Director, Space Transportation Technology Directorate, Launch Capability Unit Contact Information: Masatoshi Kodera(kodera.masatoshi@jaxa.jp) Members: Masaaki Fukui, Taku Inoue, Masatoshi Kodera, Toshihiko Munakata Abstract After a satellite is inserted into orbit, the upper stage of the rocket becomes space debris. Therefore, it is necessary to properly assess the risk that, when it naturally falls and re-enters the atmosphere, it may reach the・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EG3105 Subject Category: Research and Development PDF Responsible Representative: Masanobu Yajima, Research and Development Directorate, Research Unit I Contact Information: HARADA Ryusuke(harada.ryuusuke@jaxa.jp) Members: Mitsuko Futami, Ryusuke Harada, Yasuhiro Kitagawa, Satomi Kawamoto, Ryuji Nakawatase, Hiroshi Oda Abstract Increase of space debris is a problem for reliability of sustainable space activity. JAXA has been researching space debris related technologies for the space debris mitigation and environmental remediation. The effectiveness of space debris・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDU10301 Subject Category: Space and Astronautical Science PDF Responsible Representative: Hiroaki Kobayasi,Professor Contact Information: Shie Sato,Teikyo Univercity(25fm100170x@stu.teikyo-u.ac.jp) Members: Shie Sato Abstract JAXA/ISAS is currently conducting research and development of a reusable sounding rocket called the Atmospheric Assist Rocket. This vehicle is equipped with an ATRIUM engine, which combines a rocket engine and an air-turbo engine. This engine burns hydrogen/oxygen in a fuel-rich state as the primary combustion, and then the・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDU10308 Subject Category: Space and Astronautical Science PDF Responsible Representative: Yusuke Maru, Associate Professor, Institute of Space and Astronautical Science Contact Information: Yusuke Maru(maru.yusuke@jaxa.jp) Members: Yusuke Maru, Tasuku Miyazaki, Shingo Matsuyama, Yuma Miki, Takumi Ohno, Daiki Watanabe, Tsubasa Watabe Abstract We are conducting technological research essential for realizing a space transportation system that actively and effectively utilizes the Earth's atmosphere. Specifically, we are performing design studies of air intakes for・・・<<read more>>
