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Analyses of Thermoaerodynamics during Atmospheric Entries and of laminar-turbulent transition

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201A32 Subject Category: Aeronautical Technology PDF Responsible Representative: Hiroyuki Abe, Aviation Technology Directorate, Fundamental Aeronautics Research Unit Contact Information: Takashi Ozawa(ozawa.takashi@jaxa.jp) Members: Yuki Ide, Shingo Matsuyama, Takashi Ozawa, Toshiyuki Suzuki Abstract In this study, we try to enhance physical models for high temperature gas and numerical simulation method to accurately predict heating and aerodynamic characteristics at atmospheric entry. We aim to develop high fidelity simulation tool by demonstrating improvement of・・・<<read more>>

Conceptual Design of Advanced Aviation Systems

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201B01 Subject Category: Aeronautical Technology PDF Responsible Representative: Tetsujiro Ninomiya, Aviation Systems Research Unit, Aviation Technology Directorate Contact Information: Mitsuhiro Murayama, Aviation Systems Research Unit, Aviation Technology Directorate(murayama.mitsuhiro@jaxa.jp) Members: Ryutaro Furuya, Yuki Kishi, Mitsuhiro Murayama, Keiji Ueshima Abstract The International Civil Aviation Organization (ICAO) has declared a goal for the international aviation sector to achieve carbon neutrality by 2050, marking a significant step towards a decarbonized aviation industry. The requirements・・・<<read more>>

Research on aircraft cabin noise reduction

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C00 Subject Category: Aeronautical Technology PDF Responsible Representative: Kenichiro Nagai, Aviation Technology Directorate, Aviation Environmental SustainabiAviation Environmental Sustainability Innovation Hub Contact Information: Takashi Takahashi(takahashi.takashi@jaxa.jp) Members: Keita Nakamoto, Takashi Takahashi Abstract This research focuses on the development of our cabin noise prediction tool using the Finite-Difference Time-Domain method, and in-flight noise measurement in the JAXA's Jet-Flying Test Bed (FTB) "HISHO" with the aim of grasping the cabin noise characteristics. Reference URL・・・<<read more>>

Research on High Performance Control Surfaces and High Lift Devices

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C18 Subject Category: Aeronautical Technology PDF Responsible Representative: Dongyoun Kwak, Aviation Enviromental Sustanability Innovation Hub, Aviation Technology Directorate Contact Information: Mitsuhiro Murayama, Aviation Environmental Sustainability Innovation Hub, Aviation Technology Directorate(murayama.mitsuhiro@jaxa.jp) Members: Ryutaro Furuya, Yasushi Ito, Mitsuhiro Murayama Abstract The purpose of the research is to develop and mature a bunch of elemental technologies on aerodynamics, aeroacoustics, and structures and system design technologies to achieve high perfromance control surfaces and high-lift・・・<<read more>>

Simulation of High-Speed Rotorcraft

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C20 Subject Category: Aeronautical Technology PDF Responsible Representative: Kanako Yasue, Aviation Technology Directorate, Aviation Integration Innocation Hub Contact Information: Hideaki Sugawara(sugawara.hideaki@jaxa.jp) Members: Fumihiro Kajiwara, Yuki Kishi, Keita Kimura, Hideaki Sugawara, Ryo Takahashi, Yasutada Tanabe, Kanako Yasue Abstract This study investigates technologies for high-speed rotorcraft. The objectives are to enhance main rotor performance and reduce airframe drag to enable high-speed flight. To improve rotor performance, CFD-based optimization and advanced insights into・・・<<read more>>