JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201G27 Subject Category: Aeronautical Technology PDF Responsible Representative: Kazuyuki Nakakita, Aviation Technology Directorate, Fundamental Technology Research Unit Contact Information: Andrea Sansica(sansica.andrea@jaxa.jp) Members: David Lusher, Kenji Hayashi, Tomoaki Matsuzaki, Yoimi Kojima, Junpei Kakazu, Andrea Sansica Abstract Through our participation in various domestic and international workshops, we are advancing the predictive capabilities for full-aircraft configurations under stall conditions. Furthermore, we are establishing a set of best-practice guidelines aimed at maximizing both the・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201J04 Subject Category: Aeronautical Technology PDF Responsible Representative: Kazuyuki Nakakita, Aviation Technology Directorate, Fundamental Aeronautics Research Unit Contact Information: Shingo Matsuyama(matsuyama.shingo@jaxa.jp) Members: Kosei Goto, Shingo Matsuyama Abstract It is known that aerodynamic heating rate, real gas aerodynamic characteristics, and static and dynamic instabilities, which are important prerequisites for the design of atmospheric entry systems, change significantly with changes in capsule shape, but they also change with different representative lengths (scales),・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201J05 Subject Category: Aeronautical Technology PDF Responsible Representative: Kazuyuki Nakakita, Aviation Technology Directorate, Fundamental Aeronautics Research Unit Contact Information: Shingo Matsuyama(matsuyama.shingo@jaxa.jp) Members: Shingo Matsuyama Abstract There is a strong need to incorporate LES that can reproduce combustion and turbulence phenomena with high fidelity into the design process in order to enhance the efficiency of the development of aerospace propulsion systems such as aero engines and rocket engines. However, LES is・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201J07 Subject Category: Aeronautical Technology PDF Responsible Representative: Kazuyuki Nakakita, Aeronarutical Technology Directorate, Fundamental research unit Contact Information: Yoimi Kojima(kojima.yoimi@jaxa.jp) Members: David Lusher, Sansica Andrea, Masashi Kanamori, Kenji Hayashi, Yoimi Kojima Abstract Under off-design flight conditions, where an aircraft deviates from its steady operational state, the aircraft geometry becomes more complex and unsteady phenomena tend to arise, leading to a significant increase in the computational scale of fluid simulations. In・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201J08 Subject Category: Aeronautical Technology PDF Responsible Representative: Kazuyuki Nakakita, Aviation Technology Directorate, Fundamental Aeronautics Research Unit Contact Information: Shingo Matsuyama(matsuyama.shingo@jaxa.jp) Members: Shingo Matsuyama Abstract In recent years, research and development on reusable rockets has been proceeding vigorously, and it is expected that many new technologies not used in conventional expendable rockets—such as rocket retropropulsion and grid fins—will be adopted. In establishing these core technologies, there is a strong expectation・・・<<read more>>
