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Innovation for Design, Data-acquisition, Trouble-shoot and Certification in Aircraft Development: Aerodynamic Optimization

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA3202 Subject Category: Aeronautical Technology PDF Responsible Representative: Takeshi Ito, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center Contact Information: Shigeru Kuchi-Ishi shigeruk@chofu.jaxa.jp Members: Shigeru Kuchiishi, Takashi Ishida, Atsushi Hashimoto, Masahiro Kanazaki, Suzuki Kohji, Takatoshi Nakayama, Minoru Yoshimoto, Shinsuke Nishimura, Yukinori Morita, Takuya Ogura, Kazufumi Uwatoko Abstract An aerodynamic optimization tool using the unstructured CFD code FaSTAR is develped and its validity and efficiency are examined. A Multi-Objective Evolutionary・・・<<read more>>

Innovation for Design, Data-acquisition, Trouble-shoot and Certification in Aircraft Development: Basic Techniques for Real Flight Prediction

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA3203 Subject Category: Aeronautical Technology PDF Responsible Representative: Takeshi Ito, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center Contact Information: Kazuyuki Nakakita nakakita@chofu.jaxa.jp Members: Kazuyuki Nakakita, Shunsuke Koike, Shigeru Kuchiishi, Kanako Yasue, Hiroshi Kato, Mitsuhiro Murayama, Kentaro Tanaka, Tohru Hirai, Yasushi Ito, Keita Hatanaka, Hiroya Toriida Abstract The Aerodynamic Prediction Technology, which is a part of the Innovation for Design, Data-acquisition, Trouble-shoot and Certification in Aircraft Development, constructs the・・・<<read more>>

Investigation of internal flow of aircraft combustor for Green Engine Project.

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA0714 Subject Category: Aeronautical Technology PDF Responsible Representative: Toshiya Nakamura, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center Contact Information: Mitsumasa Makida makida.mitsumasa@jaxa.jp Members: Mitsumasa Makida(JAXA), Naoki Nakamura(ASIRI) Abstract In the development process of aircraft combustors, air mass flow distribution between fuel nozzles, dilution and cooling air holes on the liner effects performances of combustors. So it is important to understand the internal flow and estimate the mass flow・・・<<read more>>

Improvement of simulation of internal flow of turbomachine

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA2111 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Yamane, Propulsion Research Unit, Aeronautical Technology Directorate Contact Information: Junichi Kazawa kazawa.junichi@jaxa.jp Members: Junichi Kazawa, Takahiro Kawahara Abstract In the turbomachine internal flow, the separation on the blade surface and the behavior of the vortex have a large influence on the aerodynamic performance. In numerical analysis using RANS, it is difficult to simulate the separation and vortex in detail, so we・・・<<read more>>

Influence of Fineness Ratio on Aerodynamic Characteristics of Flight Vehicles

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EACA21 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Keiichi Kitamura,Yokohama National University Contact Information: Ayano Inatomi inatomi-ayano-ng@ynu.jp Members: Ayano Inatomi, Takuya Aogaki, Keiichi Kitamura Abstract In this study, we investigated details of flow field around the slender-bodied-vehicle numerically with configurations having different fineness ratios. Interestingly, the trend of Re=6x10^6 is totally opposite to that observed in Re=6x10^5 at 140 degrees of AOA. It was found that the configuration where・・・<<read more>>