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Wearable UAV (Research for new field development)

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EDA201S01 Subject Category: Aeronautical Technology PDF Responsible Representative: Toshiya Nakamura, Senior Chief Officer of Fundamental Aeronautics Research Contact Information: Daichi Wada(wada.daichi@jaxa.jp) Members: Daichi Wada Abstract For the mountain rescue and disaster relief, the rescue plan is built based on a limited source of information, which leads the less-effective operation and a risk of the secondary disaster. To solve this problem, personal flying system is developed, which carries a rescue team・・・<<read more>>

The study on improvement of DES method on low-speed buffet phenomenon

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EDA201N10 Subject Category: Aeronautical Technology PDF Responsible Representative: Keiichi Kitamura, Yokohama National University, Faculty of Engineering, Division of Systems Research Contact Information: Keiichi Kitamura(kitamura@ynu.ac.jp) Members: Yoshikatsu Furusawa, Atsushi Hashimoto, Daichi Ishido, Masashi Kanamori, Hirokazu Kurihara, Keiichi Kitamura, Tomohiro Mamashita, Shogo Motoki, Kaede Makino, Motoki Magara, Kouya Nakahara, Kazuki Nimura, Keita Suzuki, Fumiya Tsutsui, Yuta Tsukamoto, Yuya Yasumura Abstract A high-resolution, Delayed DES has been conducted around whole the aircraft under・・・<<read more>>

Aerodynamic evaluation of an annular plug inside a flow-through nacelle of an aircraft model.

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EDA201N05 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Aircraft Lifecycle Innovation Hub Contact Information: Makoto Ueno, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub(ueno.makoto@jaxa.jp) Members: Chigusa Hamada, Kenji Hayashi, Takashi Ishida, Fumitake Kuroda, Masaru Naruoka, Hiroya Toriida, Makoto Ueno, Takahiro Uchiyama, Yuko Ueno, Kento Yamada, Takahiro Yamamoto Abstract The air flow rate in the engine nacelle is adjusted using annular plugs placed in the nacelle to・・・<<read more>>

Computational Study on Aerodynamic Characteristics of Reusable Slender Body Configurations

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA12 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate Professor, Yokohama National University Contact Information: Tomohiro Mamashita(mamashita-tomohiro-nj@ynu.jp) Members: Keiichi Kitamura, Tomohiro Mamashita Abstract In this study, we work on predicting aerodynamic characteristics of the “RV-X”, which is an experimental vehicle planned for flight tests. We conducted wind tunnel tests and numerical analysis supposing the low-speed flow during the return flight. The results of the numerical calculations were・・・<<read more>>

Study on fluid dynamic interference between particles in high-speed flows

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JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA55 Subject Category: JSS Inter-University Research PDF Responsible Representative: Takayuki Nagata, Project Assistant Professor, Tohoku University Contact Information: Takayuki Nagata(nagata@tohoku.ac.jp) Members: Taku Nonomura, Takayuki Nagata Abstract Compressible flow around twin particles is investigated by the direct numerical simulation of the Navier-Stokes equations at Reynolds number of O(10^2). The objective of the present study is to obtain fundamental insight into the effects of aerodynamic interference between particles in subsonic to supersonic・・・<<read more>>