Junichi Nakatsuka
Japan Aerospace Exploration Agency
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Featured researches published by Junichi Nakatsuka.
Combustion, Explosion, and Shock Waves | 2012
Toshiyuki Katsumi; Tomo Inoue; Junichi Nakatsuka; Katsuya Hasegawa; Kiyokazu Kobayashi; Sh. Sawai; Keiichi Hori
Hydroxylammonium nitrate (HAN)-based solutions have been investigated as candidates for a green monopropellant. However, their high burning rate characteristics have hampered the application. In order to elucidate the mechanism of extremely high burning rates of some HAN-based solutions, the combustion characteristics of HAN-based aqueous solutions are studied. It is found that the role of the two-phase region is very important, and intense boiling of water owing to the superheat mechanism is responsible for the high burning rate. Hydrodynamic instability is taken into account, and the dependence of the instability on pressure is estimated. It is found that the instability is strongly affected by the Markstein number. The HAN-based monopropellant is applied to thrusters of a small-sized experimental mockup of a supersonic aircraft and used in the first free-fall test. Their operation is found to be successful and is described in detail.
Earth, Planets and Space | 2016
Masato Nakamura; Takeshi Imamura; Nobuaki Ishii; Takumi Abe; Yasuhiro Kawakatsu; Chikako Hirose; Takehiko Satoh; Makoto Suzuki; Munetaka Ueno; Atsushi Yamazaki; Naomoto Iwagami; S. Watanabe; Makoto Taguchi; Tetsuya Fukuhara; Yukihiro Takahashi; Manabu Yamada; Masataka Imai; Shoko Ohtsuki; Kazunori Uemizu; George Hashimoto; Masahiro Takagi; Yoshihisa Matsuda; Kazunori Ogohara; Naoki Sato; Yasumasa Kasaba; Toru Kouyama; Naru Hirata; Ryosuke Nakamura; Yukio Yamamoto; Takeshi Horinouchi
Acta Astronautica | 2014
Masato Nakamura; Yasuhiro Kawakatsu; Chikako Hirose; Takeshi Imamura; Nobuaki Ishii; Takumi Abe; Atsushi Yamazaki; Manabu Yamada; Kazunori Ogohara; Kazunori Uemizu; Tetsuya Fukuhara; Shoko Ohtsuki; Takehiko Satoh; Makoto Suzuki; Munetaka Ueno; Junichi Nakatsuka; Naomoto Iwagami; Makoto Taguchi; Shigeto Watanabe; Yukihiro Takahashi; George Hashimoto; Hiroki Yamamoto
International Journal of Energetic Materials and Chemical Propulsion | 2008
Toshiyuki Katsumi; Hiroyuki Kodama; Hidehumi Shibamoto; Junichi Nakatsuka; Katsuya Hasegawa; Kiyokazu Kobayashi; Hiroyuki Ogawa; Nobuyuki Tsuboi; Shujiro Sawai; Keiichi Hori
Transactions of The Japan Society for Aeronautical and Space Sciences, Space Technology Japan | 2016
Hiroyuki Koizumi; Hiroki Kawahara; Kazuya Yaginuma; Jun Asakawa; Yuichi Nakagawa; Yusuke Nakamura; Shunichi Kojima; Toshihiro Matsuguma; Ryu Funase; Junichi Nakatsuka; Kimiya Komurasaki
Earth, Planets and Space | 2018
Yosuke Nakamura; Seisuke Fukuda; Yasuko Shibano; Hiroyuki Ogawa; Shin-ichiro Sakai; Shigehito Shimizu; Ersin Soken; Yu Miyazawa; Hiroyuki Toyota; Akio Kukita; Yusuke Maru; Junichi Nakatsuka; Tomohiko Sakai; Shinsuke Takeuchi; Kenichiro Maki; Makoto Mita; Emiko Ogawa; Yuya Kakehashi; Kumi Nitta; Kazushi Asamura; Takeshi Takashima; I. Shinohara
Archive | 2015
Hiroyuki Koizumi; Hiroki Kawahara; Kazuya Yaginuma; Jun Asakawa; Yuichi Nakagawa; Junichi Nakatsuka; Satoshi Ikari; Ryu Funase; Kimiya Komurasaki
Archive | 2017
史子 廣瀬; 信明 石井; 潤一 中塚; 啓亮 道上; 匡俊 榎原; 武 大島; 幸太 松島; 宏三 大谷; 博 寺田; 千亜妃 鵜飼; 哲也 松尾; 克己 古川; Chikako Hirose; Nobuaki Ishii; Junichi Nakatsuka; Keisuke Michigami; Masatoshi Ebara; Takeshi Oshima; Kota Matsushima; Kozo Otani; Hiroshi Terada; Chiaki Ukai; Tetsuya Matuo; Katsumi Furukawa
Proceedings of the International Astronautical Congress, IAC | 2016
Masato Nakamura; Nobuaki Ishii; Takeshi Imamura; Takehiko Satoh; Takumi Abe; Chikako Hirose; Atsushi Yamazaki; Junichi Nakatsuka; Tsutomu Ichikawa; Tomoaki Toda; Hiroyuki Toyoda; Sumitaka Tachikawa; Makoto Suzuki; Takao M. Sato; Shin Ya Murakami; Yukio Yamamoto; Naomoto Iwagami; Makoto Taguchi; Tesuya Fukuhara; S. Watanabe; Yukihiro Takahashi; Munetaka Ueno; Manabu Yamada; George Hashimoto; Naru Hirata; Toru Kouyama; Kazunori Ogohara; Hiroki Ando; Ko-ichiro Sugiyama; Hiroki Kashimura
Archive | 2014
洋介 福島; 真樹 志田; 潤一 中塚; 琢美 阿部; 竜也 角田; 秀行 宮原; Yosuke Fukushima; Maki Shida; Junichi Nakatsuka; Takumi Abe; Tatsuya Tsunoda; Hideyuki Miyahara
