
NISHII Keita
助教
西井 啓太 ニシイ ケイタ にしい けいた
プロフィール
所属
東京都立大学システムデザイン学部 航空宇宙システム工学科
システムデザイン研究科 航空宇宙システム工学域
最終学歴・学位
東京大学大学院工学系研究科航空宇宙工学専攻博士課程修了,博士(工学)
専門・研究分野
航空宇宙工学
研究
研究テーマ
宇宙機に搭載する推進機に 関して電気推進と化学推進の両方を扱っています.特に小型宇宙機への搭載を目指した新しい推進機の研究開発を進めています.また,最終的に宇宙で使用される推進機が地上試験時に受ける影詈について,実験と数値シミュレーションを組み合わせた研究を行っています.
研究キーワード
希薄気体力学;数値シミュレーション;燃焼;プラズマ;化学推進;電気推進;宇宙推進;小型衛星
詳細情報
K. Nishii, H. Koizumi, and K. Komurasaki, “Observation of Condensed Combustion Product Formation during Combustion of Magnesium Plate in Water Vapor,” Journal of Evolving Space Activities, Accepted, Feb. 2023
K. Nishii, H. Koizumi, and K. Komurasaki, “Background Pressure Effect on Thrust Efficiency of Low-Reynolds-Number Nozzles,” Journal of Propulsion and Power, 38 (6), pp. 1042-1050, 2022, doi: 10.2514/1.B38719
K. Nishii, M. Akiyama, H. Koizumi, K. Komurasaki, “Combustion of Magnesium Wires with Oxygen and Water Vapor,” Combustion Science and Technology, Published online, 2021, doi: 10.1080/00102202.2021.2019241
K. Nishii, A. Hattori, H. Koizumi, and K. Komurasaki, “Low-pressure-vaporization of water droplets on wall under normal and microgravity conditions,” Acta Astronautica, 186, pp. 508-516, 2021, doi: 10.1016/j.actaastro.2021.05.039
K. Nishii, H. Koizumi, and K. Komurasaki, “Experimental Characterization of Nozzle Performance at Low Reynolds Numbers for Water Microthrusters,” Journal of Propulsion and Power, 37, pp. 595-603, 2021, doi: 10.2514/1.b38147
M. Akiyama, K. Nishii, Y. Mannami, M. Murohara, H. Koizumi, and K. Komurasaki, “Feasibility Study of a Hybrid Thruster using Wire-Shaped Magnesium and Water for Application to Small Spacecraft,” Transactions of the Japan Society for Aeronautical and Space Sciences, 64, pp. 223-233, 2021, doi: 10.2322/tjsass.64.223
Y. Murata, N. Funabiki, H. Aohama, S. Nakajima, S. Matsushita, K. Nishii, R. Takahashi, Y. Kawabata, S. Ikari, K. Miyoshi, and R. Funase, “Power Management of Lunar CubeSat Mission EQUULEUS Under Uncertainties of Power Generation and Consumption,” Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 19, pp. 377-383, 2021, doi: 10.2322/tastj.19.377
K. Nishii, J. Asakawa, K. Kikuchi, M. Akiyama, Q. Wang, M. Murohara, Y. Ataka, H. Koizumi, R. Funase and K. Komurasaki, “Flight Model Development and Ground Demonstration of Water Resistojet Propulsion System for CubeSats,” Transactions of the Japan Society for Aeronautical and Space Sciences, 63, pp. 141-150, 2020, doi: 10.2322/tjsass.63.141
J. Asakawa, K. Nishii, Y. Nakagawa, H. Koizumi and K. Komurasaki, “Direct measurement of 1-mN-class thrust and 100-s-class specific impulse for a CubeSat propulsion system,” Review of Scientific Instruments, 91, pp. 035116, 2020, doi: 10.1063/1.5121411
R. Funase, S. Ikari, K. Miyoshi, Y. Kawabata, S. Nakajima, S. Nomura, N. Funabiki, A. Ishikawa, K. Kakihara, S. Matsushita, R. Takahashi, K. Yanagida, D. Mori, Y. Murata, T. Shibukawa, R. Suzumoto, M. Fujiwara, K. Tomita, H. Aohama, K. Iiyama, S. Ishiwata, H. Kondo, W. Mikuriya, H. Seki, H. Koizumi, J. Asakawa, K. Nishii, A. Hattori, Y. Saito, K. Kikuchi, Y. Kobayashi, A. Tomiki, W. Torii, T. Ito, S. Campagnola, N. Ozaki, N. Baresi, I. Yoshikawa, K. Yoshioka, M. Kuwabara, R. Hikida, S. Arao, S. Abe, M. Yanagisawa, R. Fuse, Y. Masuda, H. Yano, T. Hirai, K. Arai, R. Jitsukawa, E. Ishioka, H. Nakano, T. Ikenaga, and T. Hashimoto, “Mission to Earth–Moon Lagrange Point by a 6U CubeSat: EQUULEUS,” IEEE Aerospace and Electronic Systems Magazine, 35, pp. 30-44, 2020, doi: 10.1109/maes.2019.2955577
H. Koizumi, J. Asakawa, Y. Nakagawa, K. Nishii, Y. Takao, M. Nakano and R. Funase, “Assessment of Micropropulsion System Unifying Water Ion Thrusters and Water Resistojet Thrusters,” Journal of Spacecraft and Rockets, 56, pp. Published Online: 9, 2019, doi: 10.2514/1.A34407
J. Asakawa, H. Koizumi, K. Nishii, N. Takeda, M. Murohara, R. Funase and K. Komurasaki, “Fundamental Ground Experiment of a Water Resistojet Propulsion System: AQUARIUS Installed on a 6U CubeSat: EQUULEUS,” Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 16, pp. 427-431, 2019, doi: 10.2322/tastj.16.427
井澤 壮太, 西井 啓太, 小泉 宏之, 小紫 公也, “電子ビーム励起蛍光を用いた宇宙機用マイクロノズル下流における2次元密度分布測定,” 日本航空宇宙学会論文集, 69, pp. 219-228, 2021, doi: 10.2322/jjsass.69.219
浅川 純,小泉 宏之,西井 啓太,服部 旭大, “小型水レジストジェットスラスタAQUARIUSの開発,” 日本航空宇宙学会誌, 66, pp. 296-301, 2018, doi: 10.14822/kjsass.66.10_296
西井 啓太,小泉 宏之,浅川 純,小紫 公也, “低レイノルズ数領域において背景圧力がノズル効率に及ぼす効果,” 日本航空宇宙学会論文集, 66, pp. 120-122, 2018, doi: 10.2322/jjsass.66.120
K. Nishii, H. Koizumi, and K. Komurasaki, “Background Pressure Effect on Thrust Efficiency of Low-Reynolds-Number Nozzles,” Journal of Propulsion and Power, 38 (6), pp. 1042-1050, 2022, doi: 10.2514/1.B38719
K. Nishii, M. Akiyama, H. Koizumi, K. Komurasaki, “Combustion of Magnesium Wires with Oxygen and Water Vapor,” Combustion Science and Technology, Published online, 2021, doi: 10.1080/00102202.2021.2019241
K. Nishii, A. Hattori, H. Koizumi, and K. Komurasaki, “Low-pressure-vaporization of water droplets on wall under normal and microgravity conditions,” Acta Astronautica, 186, pp. 508-516, 2021, doi: 10.1016/j.actaastro.2021.05.039
K. Nishii, H. Koizumi, and K. Komurasaki, “Experimental Characterization of Nozzle Performance at Low Reynolds Numbers for Water Microthrusters,” Journal of Propulsion and Power, 37, pp. 595-603, 2021, doi: 10.2514/1.b38147
M. Akiyama, K. Nishii, Y. Mannami, M. Murohara, H. Koizumi, and K. Komurasaki, “Feasibility Study of a Hybrid Thruster using Wire-Shaped Magnesium and Water for Application to Small Spacecraft,” Transactions of the Japan Society for Aeronautical and Space Sciences, 64, pp. 223-233, 2021, doi: 10.2322/tjsass.64.223
Y. Murata, N. Funabiki, H. Aohama, S. Nakajima, S. Matsushita, K. Nishii, R. Takahashi, Y. Kawabata, S. Ikari, K. Miyoshi, and R. Funase, “Power Management of Lunar CubeSat Mission EQUULEUS Under Uncertainties of Power Generation and Consumption,” Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 19, pp. 377-383, 2021, doi: 10.2322/tastj.19.377
K. Nishii, J. Asakawa, K. Kikuchi, M. Akiyama, Q. Wang, M. Murohara, Y. Ataka, H. Koizumi, R. Funase and K. Komurasaki, “Flight Model Development and Ground Demonstration of Water Resistojet Propulsion System for CubeSats,” Transactions of the Japan Society for Aeronautical and Space Sciences, 63, pp. 141-150, 2020, doi: 10.2322/tjsass.63.141
J. Asakawa, K. Nishii, Y. Nakagawa, H. Koizumi and K. Komurasaki, “Direct measurement of 1-mN-class thrust and 100-s-class specific impulse for a CubeSat propulsion system,” Review of Scientific Instruments, 91, pp. 035116, 2020, doi: 10.1063/1.5121411
R. Funase, S. Ikari, K. Miyoshi, Y. Kawabata, S. Nakajima, S. Nomura, N. Funabiki, A. Ishikawa, K. Kakihara, S. Matsushita, R. Takahashi, K. Yanagida, D. Mori, Y. Murata, T. Shibukawa, R. Suzumoto, M. Fujiwara, K. Tomita, H. Aohama, K. Iiyama, S. Ishiwata, H. Kondo, W. Mikuriya, H. Seki, H. Koizumi, J. Asakawa, K. Nishii, A. Hattori, Y. Saito, K. Kikuchi, Y. Kobayashi, A. Tomiki, W. Torii, T. Ito, S. Campagnola, N. Ozaki, N. Baresi, I. Yoshikawa, K. Yoshioka, M. Kuwabara, R. Hikida, S. Arao, S. Abe, M. Yanagisawa, R. Fuse, Y. Masuda, H. Yano, T. Hirai, K. Arai, R. Jitsukawa, E. Ishioka, H. Nakano, T. Ikenaga, and T. Hashimoto, “Mission to Earth–Moon Lagrange Point by a 6U CubeSat: EQUULEUS,” IEEE Aerospace and Electronic Systems Magazine, 35, pp. 30-44, 2020, doi: 10.1109/maes.2019.2955577
H. Koizumi, J. Asakawa, Y. Nakagawa, K. Nishii, Y. Takao, M. Nakano and R. Funase, “Assessment of Micropropulsion System Unifying Water Ion Thrusters and Water Resistojet Thrusters,” Journal of Spacecraft and Rockets, 56, pp. Published Online: 9, 2019, doi: 10.2514/1.A34407
J. Asakawa, H. Koizumi, K. Nishii, N. Takeda, M. Murohara, R. Funase and K. Komurasaki, “Fundamental Ground Experiment of a Water Resistojet Propulsion System: AQUARIUS Installed on a 6U CubeSat: EQUULEUS,” Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 16, pp. 427-431, 2019, doi: 10.2322/tastj.16.427
井澤 壮太, 西井 啓太, 小泉 宏之, 小紫 公也, “電子ビーム励起蛍光を用いた宇宙機用マイクロノズル下流における2次元密度分布測定,” 日本航空宇宙学会論文集, 69, pp. 219-228, 2021, doi: 10.2322/jjsass.69.219
浅川 純,小泉 宏之,西井 啓太,服部 旭大, “小型水レジストジェットスラスタAQUARIUSの開発,” 日本航空宇宙学会誌, 66, pp. 296-301, 2018, doi: 10.14822/kjsass.66.10_296
西井 啓太,小泉 宏之,浅川 純,小紫 公也, “低レイノルズ数領域において背景圧力がノズル効率に及ぼす効果,” 日本航空宇宙学会論文集, 66, pp. 120-122, 2018, doi: 10.2322/jjsass.66.120
JSASS Young Researcher Award, 2021
33rd Annual Conference on Small Satellites, Student Poster Award, Second Place, US, 2019.
49th Annual Meeting of JSASS, Student Presentation Award, Japan, 2018.
61st the Space Sciences and Technology Conference, Student Poster Award, Japan, 2017.
33rd Annual Conference on Small Satellites, Student Poster Award, Second Place, US, 2019.
49th Annual Meeting of JSASS, Student Presentation Award, Japan, 2018.
61st the Space Sciences and Technology Conference, Student Poster Award, Japan, 2017.
日本航空宇宙学会;American Institute of Aeronautics and Astronautics
連絡先
研究室
4号館203b号室
オフィスアワー
月曜日-金曜日,9:00-18:00
内線番号
内線8076
メールアドレス
knishii●tmu.ac.jp
(メールを送信される場合は●を@に変換してください)