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Fundamental Research on Noise Generation Mechanisms from Airframe

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19ECWU02 Subject Category: Cooperative Graduate School System PDF Responsible Representative: Kazuomi Yamamoto, FQUROH+ Team, Aviation Systems Research Unit, Aeronautical Technology Directorate Contact Information: Kazuomi Yamamoto(yamamoto.kazuomi@jaxa.jp) Members: Yutaku Yan, Kazuomi Yamamoto, Mitsuhiro Murayama, Yasushi Ito, Takehisa Takaishi, Ryotaro Sakai, Tohru Hirai, Kentaro Tanaka, Kazuhisa Amemiya, Gen Nakano Abstract The noise reduction technology for high-lift devices and landing gear draws international attention to reduce noise in areas around airports. FQUROH (Flight Demonstration・・・<<read more>>

Aerodynamic Investigation of a Multiple-Rotor Drone in Ground Effect

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19ECMP17 Subject Category: Competitive Funding PDF Responsible Representative: Yoshikazu Makino, Unit Director, Aviation Systems Research Unit, Aeronautical Technology Directorate Contact Information: Yasutada Tanabe(tan@chofu.jaxa.jp) Members: Yasutada Tanabe, Hideaki Sugawara, Riku Tanaka, Kuniyuki Takekawa Abstract Larger and heavier drones are being developed along with new trials to built multiple-rotor type eVTOLs which can carry several people. However, the flowfields around multiple rotors where the neighboring rotors are rotating in different directions are・・・<<read more>>

Investigation on the structure of rotating detonation wave

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19ECMP12 Subject Category: Competitive Funding PDF Responsible Representative: Shingo Matsuyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Shingo Matsuyama(smatsu@chofu.jaxa.jp) Members: Shingo Matsuyama Abstract In this study, combustion analysis by large eddy simulation (Large-Eddy Simulation, LES) was carried out in order to clarify propagation characteristics and detailed structure of rotating detonation wave. Two-dimensional and three-dimensional simulations were carried out for stable operating conditions in the combustion test of the・・・<<read more>>

Optimization of rotor blade

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19ECMP11 Subject Category: Competitive Funding PDF Responsible Representative: Yasutada Tanabe, Senior Researcher, Aviation Systems Research Unit, Aeronautical Technology Directorate Contact Information: Yasutada Tanabe(tan@chofu.jaxa.jp) Members: Yasutada Tanabe, Masahiko Sugiura, Hideaki Sugawara, Kuniyuki Takekawa Abstract Search the optimized rotor blade for high-speed rotorcraft. Reference URL Please refer to 'Future type rotary-airfoil airplane system technology | Sky Frontier – Sky Frontier Program | Aeronautical Technology Directorate'. Reasons and benefits of using JAXA Supercomputer・・・<<read more>>

JAXA-SUBARU Cooperative Research

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19ECMP10 Subject Category: Competitive Funding PDF Responsible Representative: Yasutada Tanabe, Aeronautical Technology Directorate, Aviation Systems Research Unit Contact Information: Yasutada Tanabe(tan@chofu.jaxa.jp) Members: Yasutada Tanabe, Hideaki Sugawara, Kuniyuki Takekawa, Masafumi Sasaki Abstract Compound helicopter is one of the next-generation rotorcraft to achieve high-speed flight. However, the increased drag due to the aerodynamic interaction between the rotor and the fixed-wing is one of the technology issues for this type of rotorcraft. The・・・<<read more>>