The 2015 IEPC (International Electric Propulsion Conference) Best Paper AwardHiroyuki Koizumi Hiroki Kawahara Kazuya Yaginuma Jun Asakawa Ryu Funase Kimiya Komurasaki
2017年9月
IAA (International Academy of Astronautics) The Laurels for Team Achievement Award 2017Osamu Mori Yuichi Tsuda Hirotaka Sawada Ryu Funase Takayuki Yamamoto Takanao Saiki Tatsuya Endo Yoji Shirasawa Yuya Mimasu Katsuhide Yonekura Hirokazu Hoshino Hiroyuki Minamino Junichiro Kawaguchi
JOURNAL OF THE ASTRONAUTICAL SCIENCES 67(3) 950-976 2020年1月 [査読有り]
This paper presents the trajectory design for EQUilibriUm Lunar-Earth point 6U Spacecraft (EQUULEUS), which aims to demonstrate orbit control capability of CubeSats in the cislunar space. The mission plans to observe the far side of the Moon from ...
JOURNAL OF SPACECRAFT AND ROCKETS 56(5) 1400-1408 2019年9月 [査読有り]
This study proposes a micropropulsion system unifying ion thrusters and resistojet thrusters and assessing that propulsive capability. The remarkable features of the system are the usage of water propellant and unification of the two types of thru...
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 4(4) 2018年10月 [査読有り]
Toward an era of x-ray astronomy, next-generation x-ray optics are indispensable. To meet a demand for telescopes lighter than the foil optics but with a better angular resolution <1 arcmin, we are developing micropore x-ray optics based on microm...
Naoya Ozaki Stefano Campagnola Ryu Funase Chit Hong Yam
JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 41(2) 377-387 2018年2月 [査読有り]
Low-thrust propulsion is a key technology for space exploration, and much work in astrodynamics has focused on the mathematical modeling and the optimization of low-thrust trajectories. Typically, a nominal trajectory is designed in a deterministi...
Earth observation satellites can improve the flexibility of observation sites by having “maneuverability,” and low-thrust obtained by ion thruster will be a promising method for orbital change for micro-satellites. Designing low-thrust...
Kosei Kikuchi Keita Nishii Mariko Akiyama Qihang Wang Masaya Murohara Yasuho Ataka Akihiro Hattori Jun Asakawa Hiroyuki Koizumi Kota Kakihara Kanta Yanagida, Ryo Suzumoto Ryu Funase Kimiya Komurasaki
AIAA Propulsion and Energy Forum 2019年8月 [査読有り]
Water is one of the most suitable propellants for small spacecraft because it can be stored at low pressure, is safe and abundant on earth. Although propulsion systems using water as a propellant were already operated in space, but the desired thr...
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