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Acoustic Liner Program for High-bypass-ratio Aircraft engines

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA101P00 Subject Category: Aeronautical Technology PDF Responsible Representative: Tatsuya Ishii, Director of Aviation Environmental Sustainability Innovation Hub, Aviation Technology Directorate Contact Information: Shunji ENOMOTO(enomoto.shunji@jaxa.jp) Members: Hideaki Matsuura, Daisuke Sasaki, Junichi Oki, Shunji Enomoto Abstract Ultra high bypass ratio aviation jet engines have a smaller sound absorbing liner area than conventional engines. In this project, we will develop sound-absorbing device technology that provides high noise reduction performance even with a small-sized・・・<<read more>>

Innovative Green Aircraft Technology (iGreen) : Riblet coating technology

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA101R01 Subject Category: Aeronautical Technology PDF Responsible Representative: Mitsuru Kurita, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub Contact Information: Mitsuru Kurita, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub(kurita.mitsuru@jaxa.jp) Members: Fumitake Kuroda, Mitsuru Kurita, Monami Sasamori Abstract By developing a particular riblet pattern that is effective at reducing the turbulence frictional resistance, and by producing and applying an easy-to-coat method that can create an optimum riblet surface on the・・・<<read more>>

CFD simulation of a rotor blade for high advance ratio flight

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA102C20 Subject Category: Aeronautical Technology PDF Responsible Representative: Kanako Yasue, Aviation Technology Directorate, team leader, Aircraft Integration Innovation Hub, Airmobility Design Team Contact Information: Keita Kimura(kimura.keita@jaxa.jp) Members: Fumihiro Kajiwara, Keita Kimura, Yasutada Tanabe Abstract In order to realize the high-speed compound helicopter proposed by JAXA, it is necessary to develop design technology that significantly reduces aerodynamic drag compared to conventional helicopters. One of the design technologies is the JAXA-proposed high-mu・・・<<read more>>

Aerodynamic and Aeroelastic analysis for rotorcraft

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA102C21 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, Keita Kimura, Hideaki Sugawara, Yasutada Tanabe Abstract This project involves numerical simulations related to the aerodynamics and aeroelasticity analysis for rotorcraft, which is being carried out in the aviation technology directorate. The aerodynamic performance of next-generation rotorcraft is evaluated, and technology issues and newly designed shapes・・・<<read more>>

Application of the Cartesian grid and an IB method to the analysis of aircraft engine comustors

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EDA102G31 Subject Category: Aeronautical Technology PDF Responsible Representative: Taisuke Nambu, Aviation Technology Directorate, Aircraft Digital Transformation Technology Demonstration Project Team (XANADU) Contact Information: Taisuke Nambu(nambu.taisuke@jaxa.jp) Members: Dan Hori, Taisuke Nambu, Kei Shimura Abstract The evaluation of key factors in thermal-fluid phenomena of aero-engine combustors and fundamental characteristics as a fluid solver is conducted using HINOCA-AE, the potential for expanding the application of numerical analysis to combustor design is explored in・・・<<read more>>