- 著者
- Nagata Harunori Ito Mitsunori Maeda Takenori Watanabe Mikio Uematsu Tsutomu Totani Tsuyoshi Kudo Isao
- 出版者
- Elsevier
- 雑誌
- Acta Astronautica (ISSN:00945765)
- 巻号頁・発行日
- vol.59, no.1-5, pp.253-258, 2006-07
- 被引用文献数
- 50
By introducing various innovative ideas, the difficult-to-develop small hybrid-type rocket is successfully developed. The main purpose is to drastically reduce the cost of rocket experiments and thus attract potential users such as metrological and microgravity researchers. A key idea is a new fuel grain design to accelerate the gasification rate of solid fuel. The new fuel grain design, designated as CAMUI as an abbreviation of “Cascaded Multistage Impinging-jet”, is that the gas flow repeatedly collides with the solid fuel surface to accelerate the heat transfer to the fuel. To install a regenerative cooling system using cryogenic liquid oxygen as coolant in a small launcher, the authors devised a valveless supply system (with no valves in the liquid oxygen flow line). Four serial successful launch verification tests by 10 kg vehicle equipped with a 50 kgf thrust CAMUI motor have shown the feasibility of the motor system. The meteorological observation model of 400 kgf class motor is under development and the development of microgravity experiment class of 1.5 to 2 tonf motor will follow subsequently. The authors plan to complete the development of the 400 kgf class motor for meteorological observation model by the end of FY2005.
- 著者
- OBAYASHI Tatsuzo KURIKI Kyoichi KAWASHIMA Nobuki NAGATOMO Makoto KUDO Isao NINOMIYA Keiken USHIROKAWA Akio Ejiri Masaki SASAKI Susumu
- 出版者
- 宇宙航空研究開発機構
- 雑誌
- ISAS report (ISSN:03721418)
- 巻号頁・発行日
- vol.43, no.8, pp.141-174, 1978-08
SEPAC (Space Experiment with Particle Accelerators) accelerators were tested in NASDA Large Space Chamber. The accelerators were Engineering Models of EBA (Electron Beam Accelerator) and MPD (Magnetoplasmadynamic arcjet). EMI (Electromagnetic Interference) data were obtained for EBA and MPD arcjet and no interference both electronic and via plasma was observed between these accelerators. Charge neutralization was successfully attained when MPD arcjet or NGP (Neutral Gas Plume) and EBA were simultaneously operated. Beam and plasma injections were clearly observed by a monitor TV camera.