JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25ECWU05 Subject Category: Cooperative Graduate School System PDF Responsible Representative: Takashi Ozawa, Research and Development Directorate Contact Information: Masaya Ichikawa(ichikawa.masaya24@ae.k.u-tokyo.ac.jp) Members: Masaya Ichikawa, Takashi Ozawa Abstract Very Low Earth Orbit (VLEO) satellites—defined here as satellites operating in Earth orbits below an altitude of 300 km—have attracted increasing attention in recent years because they can obtain higher-resolution images and enable shorter communication times, making them useful as Earth observation and communication・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25ECWU06 Subject Category: Cooperative Graduate School System PDF Responsible Representative: Yuichiro Aoki, Manager, Management and Integration Department Contact Information: Yuichiro Aoki(aoki.yuichiro@jaxa.jp) Members: Yuichiro Aoki, Yusuke Komeda, Yusuke Onozeki, Shunpei Shimizu Abstract Hypersonic vehicles offer great potential for future transport but require high aerodynamic performance and lightweight structures for efficiency and safety. This study proposes a hypersonic aircraft with a morphing wing to optimize performance from takeoff to hypersonic cruise. Using・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25ECWU11 Subject Category: Cooperative Graduate School System PDF Responsible Representative: Satoshi Nonaka, Chief Researcher, Department of Space Flight Systems Contact Information: Masaaki Shigematsu(shigematsu.masaaki@ac.jaxa.jp) Members: Masaaki Shigematsu, Kaho Nakagawa, Yuto Nakagawa, Haruhito Ohki Abstract We are studying sample return missions using multiple spacecraft in a mother-daughter configuration. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System Large-scale computational resources were required to perform simulations in which various parameters, such・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25ECWU77 Subject Category: Cooperative Graduate School System PDF Responsible Representative: Manager of ECLSS, Research Unit II, Aerospace RInsertHereD Directorate, JAXA Contact Information: Masato Sakurai(sakurai.masato@jaxa.jp) Members: Yuki Ban, Hikono Furuichi, Motoharu Kusano, Shin Noguchi, Masato Sakurai Abstract To advance manned space exploration, we elucidate the behavior of gas-liquid two-phase flow generated during the operation of the Environment Control and Life Support System (ECLSS) in low-gravity environments. Reference URL N/A Reasons and・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EACA20 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Professor, Yokohama National University Contact Information: Hiromu Sunazuka(sunazuka-hiromu-jx@ynu.jp) Members: Keiichi Kitamura, Yuki Oonawa, Hiromu Sunazuka Abstract It is important to accurately understand the aerodynamic characteristics of rocket vehicles and deceleration devices for reducing the cost of space transportation and advancing planetary exploration technologies. In particular, in supersonic flows accompanied by shock waves, surface protrusions on the vehicle and the・・・<<read more>>
