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CFD Analysis of Aerodynamic and Acoustic Design Technologies for Future Rotorcraft

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C21 Subject Category: Aeronautical Technology PDF Responsible Representative: Kanako Yasue, Aviation Technology Directorate, team leader, Aviation Integration Innovation Hub, Airmobility Design Team Contact Information: Keita Kimura, Japan Aerospace Exploration Agency, Aviation Technology Directrate(kimura.keita@jaxa.jp) Members: Fumihiro Kajiwara, Yuki Kishi, Keita Kimura, Hideaki Sugawara, Yasutada Tanabe Abstract To advance the design technologies for future rotorcraft, including helicopters and eVTOL vehicles, this study has focused on airfoil design and associated analyses in the・・・<<read more>>

Numerical analysis for optimal design of helicopter rotor blades

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C22 Subject Category: Aeronautical Technology PDF Responsible Representative: Kanako Yasue, Aviation Technology Directorate, team leader, Aircraft Life-cycle Innovation Hub, Airmobility Digital Design Team Contact Information: Keita Kimura(kimura.keita@jaxa.jp) Members: Keita Kimura, Yasutada Tanabe Abstract To advance optimal design technologies for rotor blades used in rotorcraft, such as helicopters, this study investigates an aerodynamic optimization approach that combines high-fidelity CFD/CSD coupled analysis with optimization algorithms. To ensure wide-range applicability, multi-objective optimization is・・・<<read more>>

Numerical analysis of contrail formation process and climate impact by aviation-induced cirrus by emissions from aircraft with alternative aviation fuels

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C35 Subject Category: Aeronautical Technology PDF Responsible Representative: Atsushi Kanda, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub Contact Information: Keiichi Okai, Aviation Technology Directory(okai.keiichi@jaxa.jp) Members: Keiichi Okai, Takuma Tadokoro, Shun Amari, Jonas Andreas Erbesdobler, Shinji Nakaya Abstract In recent years, carbon neutrality has been declared in the aviation sector. As one of the greenhouse effects of aircraft exhaust gas, persistent contrail and contrail cirrus formation have been recognized as・・・<<read more>>

Robust design for Jet Engine/Development of Robust design technology

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C50 Subject Category: Aeronautical Technology PDF Responsible Representative: Atsushi Kanda, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub Contact Information: Junichi Kazawa, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub(kazawa.junichi@jaxa.jp) Members: Junichi Kazawa, Takafumi Kanayama, Masaya Suzuki, Kenshi Yamashita Abstract Solve the technical challenges involved in realizing small-core jet engines. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System The calculation domain is the high pressure turbine -・・・<<read more>>

Robust design for Jet Engine/Analyses of Unsteady phenomena

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JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201C51 Subject Category: Aeronautical Technology PDF Responsible Representative: Atsushi Kanda, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub Contact Information: Junichi Kazawa, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub(kazawa.junichi@jaxa.jp) Members: Junichi Kazawa, Takafumi Kanayama, Kenshi Yamashita Abstract Clarify the mechanism of unsteady flow phenomena that occusr in compressor blade rows. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System The unsteady analyses of multi-stage annular compressor will・・・<<read more>>