所属/Affiliation 東京大学大学院工学系研究科航空宇宙工学専攻 Department of Aeronautics and Astronautics, Graduate School of Engineering, The University of Tokyo 研究テーマ/Research Topic Water resistojet thruster, Six-degree-of-freedom thrust measurement system for micropropulsion 連絡先/Contact i.moriai"at"al.t.u-tokyo.ac.jp 東京大学本郷キャンパス工学部7号館501室
研究業績/Publications 学術論文/Journal Papers
Isamu Moriai, Hiroyuki Koizumi, and Kimiya Komurasaki, "An elastic pendulum thrust stand for evaluating six-degree-of-freedom thrust of 10 mN-class propulsion systems," Review of Scientific Instruments, Vol. 96, No. 4, 044501, 2025. https://doi.org/10.1063/5.0248049
Isamu Moriai, Hiroyuki Koizumi, Ten Arai, Hayato Nakamura, and Kimiya Komurasaki, "Performance Improvement of a Six-Degree-of-Freedom Elastic Pendulum Thrust Stand for Micropropulsion," Journal of Electric Propulsion, Vol. 4, No. 24, 2025. https://doi.org/10.1007/s44205-025-00120-6
Isamu Moriai, Aoma Fujimori, Hokuto Sekine, Hiroyuki Koizumi, Mariko Akiyama, Shunichiro Nomura, Masaya Murohara, Masayuki Matsuura, Ten Arai, Naoto Aizawa, Kento Shirasu, Ryo Minematsu, Yosuke Kawabata, Shintaro Nakajima, Ryota Fuse, and Ryu Funase, "A Water Resistojet Propulsion System on a 6U CubeSat EQUULEUS: Demonstration of Reaction Control in Deep Space," Acta Astronautica, Vol. 227, pp. 114-125, 2025. https://doi.org/10.1016/j.actaastro.2024.11.037
Hokuto Sekine, Yasuho Ataka, Isamu Moriai, Aoma Fujimori, Mariko Akiyama, Masaya Murohara, Hiroyuki Koizumi, Kota Kakihara, Kento Shirasu, Daigo Takasaki, Ryo Minematsu, Masayuki Matsuura, Ten Arai, Yuto Tsuchiya, Naoto Aizawa, Mizuki Noguchi, Shuhei Matsushita, Toshihiro Shibukawa, Kazuki Toma, Kazuki Takashima, Kosuke Ogino, Yuki Kusano, Shintaro Nakajima, Ryota Fuse, Kota Miyoshi, Akihiro Ishikawa, Yosuke Kawabata, Tomoki Mochizuki, Takuya Chikazawa, and Ryu Funase, "On-orbit Performance Evaluation of AQUARIUS: a Water Resistojet Propulsion System during Initial Flight Operation of a 6U CubeSat EQUULEUS," TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, Vol. 67, No. 5, pp. 274-284, 2024. https://doi.org/10.2322/tjsass.67.274
Isamu Moriai, Kentaro Yamauchi, Hiroyuki Koizumi, and Kimiya Komurasaki, "Performance validation of the six-degree-of-freedom thrust stand using a cold gas jet thruster," Journal of the Japan Society for Aeronautical and Space Science, Vol. 72, No.2, pp. 59-62, 2024 (in Japanese). https://doi.org/10.2322/jjsass.72.59.
国際会議/International Conferences
Isamu Moriai, Aoma Fujimori, Hokuto Sekine, Hiroyuki Koizumi, Mariko Akiyama, Ten Arai, Kento Shirasu, Ryo Minematsu, Shunichiro Nomura, Yosuke Kawabata, Shintaro Nakajima, Ryota Fuse, and Ryu Funase, "On-orbit Results of a Water Resistojet Propulsion System on a 6U CubeSat EQUULEUS: Reaction Control and Delta-V Generation," AIAA SciTech 2025 Forum, Florida, USA, January 2025 (oral). https://doi.org/10.2514/6.2025-2828
Isamu Moriai, and Hiroyuki Koizumi, "Water propulsion systems and its utilization for sustainable spacecraft operation," The University of Manchester and University of Tokyo Joint Research Symposium Global Green Transformation Workshop, Manchester, UK, October 2024 (poster).
Ten Arai, Isamu Moriai, Hokuto Sekine, Hayato Nakamura, Hiroyuki Koizumi, and Kimiya Komurasaki, "The Fully Wireless Six-Degree-of-Freedom Thrust Measurement for CubeSat Class Propulsion Systems," 75th International Astronautical Congress, Milan, Italy, October 2024 (oral).
Isamu Moriai, Ten Arai, Hayato Nakamura, Hiroyuki Koizumi, Hokuto Sekine, and Kimiya Komurasaki, "Design and Testing of a Six-Degree-of-Freedom Thrust Measurement System for Micropropulsion," 38th International Electric Propulsion Conference, Toulouse, France, June 2024 (oral).
Ten Arai, Isamu Moriai, Hokuto Sekine, Hiroyuki Koizumi, and Kimiya Komurasaki, "Demonstration of the Fully Wireless Thrust Measurement System for Micropropulsion," 74th International Astronautical Congress, Baku, Azerbaijan, October 2023 (oral).
Isamu Moriai, Hokuto Sekine, Yasuho Ataka, Aoma Fujimori, Mariko Akiyama, Masaya Murohara, Hiroyuki Koizumi, Naoto Aizawa, Ten Arai, Yuto Tsuchiya, Mizuki Noguchi, Masayuki Matsuura, Hiroki Kuwabara, RuCheng Zhang, Yuki Jotaki, Ryo Minematsu, Kento Shirasu, Daigo Takasaki, Kota Kakihara, Shuhei Matsushita, Toshihiro Shibukawa, Shingo Nishimoto, Kazuki Toma, Shunichiro Nomura, Toshihiro Suzuki, Hirotaka Sekine, Yosuke Kawabata, Masahiro Fujiwara, Kentaro Enokida, Tomoki Mochizuki, Takukya Chikazawa, Shintaro Nakajima, Ryota Fuse, Kota Miyoshi, Akihiro Ishikawa, Satoshi Ikari, and Ryu Funase, "On-orbit performance of AQUARIUS: world's first successful water propulsion system in deep space," 74th International Astronautical Congress, Baku, Azerbaijan, October 2023 (oral).
Aoma Fujimori, Hokuto Sekine, Yasuho Ataka, Isamu Moriai, Mariko Akiyama, Masaya Murohara, Hiroyuki Koizumi, and Ryu Funase, "AQUARIUS: The World's First Water-Based Thruster Enabled 6U CubeSat to Complete Lunar Flyby," 37th Small Satellite Conference, Utah, USA, August 2023 (oral).
Kazuki Toma, Toshihiro Shibukawa, Shuhei Matsushita, Shingo Nishimoto, Hokuto Sekine, Aoma Fujimori, Isamu Moriai, and Ryu Funase, "Thermal Operation for the 6U Deep Space CubeSat EQUULEUS in the Initial Critical Phase," 37th Small Satellite Conference, Utah, USA, August 2023 (poster).
Isamu Moriai, Hokuto Sekine, Yasuho Ataka, Aoma Fujimori, Mariko Akiyama, Masaya Murohara, and Hiroyuki Koizumi, AQUARIUS Project Team, Kota Kakihara, Shunichiro Nomura, Yosuke Kawabata, Shintaro Nakajima, Ryota Fuse, Masahiro Fujiwara, Akihiro Ishikawa, Shuhei Matsushita, Toshiro Shibukawa, Shingo Nishimoto, Kazuki Toma, and Ryu Funase, "Initial Flight Operation of AQUARIUS: Water Resistojet Thruster on 6U EQUULEUS," The 34th International Symposium on Space Technology and Science & 12th Nano-Satellite Symposium, Fukuoka, Japan, June 2023 (oral).
Isamu Moriai, Ten Arai, Hiroyuki Koizumi, and Kimiya Komurasaki, "A multimode six-degree-of-freedom thrust stand for micropropulsion and evaluation of its measurement performance," The 11th Asian Joint Conference on Propulsion and Power, Ishikawa, Japan, March 2023 (oral).
Yasuho Ataka, Hokuto Sekine, Mariko Akiyama, Masaya Murohara, Hiroki Kuwabara, Zhang RuCheng, Yuki Jotaki, Aoma Fujimori, Shotaro Nishimura, Ryo Minematsu, Isamu Moriai, Fuya Ezuka, Kento Shirasu, Daigo Takasaki, Yuki Hata, Tenma Fujisawa, Kentaro Yamauchi, Hiroyuki Koizumi, Masahiro Fujiwara, Shunichiro Nomura, Yosuke Kawabata, Akihiro Ishikawa, Kota Kakihara, Shuhei Matsushita, Toshihiro Shibukawa, Ryu Funase, and Kimiya Komurasaki, "Pre-flight training using hardware simulator of AQUARIUS: Water resistojet thruster flying on Artemis-1",36th Small Satellite Conference, Utah, USA, August 2022 (poster).
Isamu Moriai, Kentaro Yamauchi, Hiroyuki Koizumi, and Kimiya Komurasaki, "A 6 DOF thrust measurement system toward correlation to on-orbit performance," 36th Small Satellite Conference, Utah, USA, August 2022 (poster).
