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Aerodynamic analysis for high-speed rotorcraft

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA201C20 Subject Category: Aeronautical Technology PDF Responsible Representative: Kanako Yasue, Aviation Technology Directorate, Aviation Integration Innovation 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 project aims to contribute to improvement in the flight range and flight speed of rotorcraft , and is conducting research and development for technologies to reduce aerodynamic drag. Rotorcraft consists of non-streamlined・・・<<read more>>

Optimal design of propellers for compound helicopters

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA201C21 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, Keita Kimura, Yasutada Tanabe Abstract In this project, optimal design study has been conducted to improve the performance of the side and tail propellers for compound helicopters proposed by JAXA. CFD analysis is utilized・・・<<read more>>

Numerical analysis for optimal design of helicopter rotor blades

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA201C22 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 As part of a joint research project among JAXA, DLR, and ONERA, efforts are underway to verify/validate helicopter blade analysis tools and optimization methods, and to accumulate knowledge. Blade shape optimization is being pursued using the HART・・・<<read more>>

Numerical analysis on combustion instability considering spray response

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA201C30 Subject Category: Aeronautical Technology PDF Responsible Representative: Junichi Kazawa, Japan Aerospace Exploration Agency, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub Contact Information: Kazuaki Matsuura, Japan Aerospace Exploration Agency, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub. Members: Kazuaki Matsuura, Yuta Sasaki, Kodai Kato, Yoshio Zama Abstract Numerical analysis on combustion instability considering spray response is performed to clarify phenomena and improve prediction capability of CFD in combustion instabilities.・・・<<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 2024-January 2025 Report Number: R24EDA201C35 Subject Category: Aeronautical Technology PDF Responsible Representative: Atsushi Kanda, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub Contact Information: Keiichi Okai, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub(okai.keiichi@jaxa.jp) Members: Keiichi Okai, Takuma Tadokoro, Ryo Yoshida 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>>