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Hydrogen Application to Aircraft and Future Space Transportation System

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EA2121 Subject Category: Aeronautical Technology PDF Responsible Representative: Sadatake Tomioka, Leader, Hydrogen Aerospace Plane Team Contact Information: Hideyuki Taguchi(taguchi.hideyuki@jaxa.jp) Members: Manami Fujii, Mizuki Fukazawa, Motoyuki Hongoh, Yusuke Hoshiya, Daiki Ito, Yuki Kuwabara, Masafumi Momose, Koichi Omi, Junichi Oki, Takahiro Terao, Nozomi Takaki, Rintaro Tanaka, Hideyuki Taguchi, Kotaro Yamada, Kotaro Yoshihara, Kazutaka Yamada Abstract This research aims at the demonstration of the thrust control method of a hypersonic pre-cooled turbojet engine・・・<<read more>>

Study on Aerodynamic Characteristics and Flow Fields for Mars Exploration Airplane

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA18 Subject Category: JSS Inter-University Research PDF Responsible Representative: Seiichiro Morizawa, Lecturer, National Institute of Technology, Okinawa College Contact Information: Seiichiro Morizawa(morizawa@okinawa-ct.ac.jp) Members: Seiichiro Morizawa, Takashi Matsuno Abstract Recently, many kinds of research on unmanned aerial vehicles such as the Martian atmosphere and a high altitude one in the Earth’s stratosphere have been conducted actively. These environments become that the atmospheric density and temperature are much lower. Then, the flight・・・<<read more>>

Fundamental numerical analysis on propagation of detonation waves

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA45 Subject Category: JSS Inter-University Research PDF Responsible Representative: Toshiharu Mizukaki, Professor, Tokai University Contact Information: Toshiharu Mizukaki, Professor, Tokai University(mzkk@tsc.u-tokai.ac.jp) Members: Toshiharu Mizukaki, Faming Wang Abstract Detonation waves are sel- propagated waves assisted by shock waves. Utilizing the detonation waves would rialize high-efficiency propulsion system. The pourpose of this project is to establish numerical analysy method for detonation characteristics obtained by experiments. Reference URL Please refer to https://www.mzkklab.com/ .・・・<<read more>>

Study on dynamic instability of a reentry capsule at transonic speed

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21ETET12 Subject Category: Skills Acquisition System PDF Responsible Representative: Takashi Takahashi(Aeronautical Technology Directorate) Contact Information: Yuya ohmichi (ohmichi.yuya@jaxa.jp) Members: Masato Harafuji Abstract Atmospheric entry capsules are known to be prone to dynamic instabilities during subsonic to transonic speed flight.It has also been suggested that low-frequency fluid phenomena may have an effect on the dynamic instability. In this study, in order to better understand wake phenomena, numerical fluid simulations were performed・・・<<read more>>

Numerical Study of Breakdown and Shock Wave Structures for Improvement of Flight Performance in a Beamed-energy Vehicle

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA17 Subject Category: JSS Inter-University Research PDF Responsible Representative: Masayuki Takahashi, Associate Professor, Tohoku University Contact Information: Masayuki Takahashi, Tohoku University(mtakahashi@rhd.mech.tohoku.ac.jp) Members: Soichiro Suzuki, Hoshiki Sato, Naoki Tsunezawa, Masayuki Takahashi Abstract Objective of this study is revealing a discharge process on beaming propulsion system and finding a condition in which a thrust performance is maximized through numerical simulaiton. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System It・・・<<read more>>