Curriculum Vitaes

Hiroyuki Ogawa

  (小川 博之)

Profile Information

Affiliation
Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Degree
Doctor of Engineering(Mar, 1996, Nagoya University)

Contact information
ogawa.hiroyukijaxa.jp
J-GLOBAL ID
200901051344540154
researchmap Member ID
1000253790

External link

Research on advanced thermal control systems for future scientific satellites
 Based on the experience of scientific satellite projects, we analyze the current issues and future plans, and conduct research and development of advanced thermal control systems for future scientific satellites. The results of our research have been fed back to the thermal control system on board the X-ray astronomy satellite Hitomi, and are being considered for application to the next scientific satellite project.

Thermal control for scientific satellite projects
 In challenging projects that actively employ thermo-fluid devices, such as the Japan-Europe Mercury mission BepiColombo, which will be exposed to extreme environments that have never been experienced before, and the large X-ray telescope satellite Hitomi, new satellite development methods that have never been experienced before are required. In such challenging projects that actively employ thermo-fluid devices, conventional satellite development methods and their extensions cannot be applied. We are contributing to the success of the project from the viewpoint of heat by leading the new research and development with our academic knowledge of thermo-fluid mechanics, such as development of new materials that can withstand extreme environments, construction of thermal design and analysis methods, development of test facilities, and development of verification methods.

Application of thermo-fluid mechanics
 We are contributing to various space science project activities based on our academic knowledge of thermo-fluid and its related fields. In the research of reusable rockets, we are contributing to the solution of problems related to thermo-fluid such as engine flow, cryogenic tanks, and external flow. In the area of satellite propulsion, we have contributed to the improvement of thruster analysis technology by studying the chemical reaction flow inside hydrazine thrusters, and in the area of rocket propulsion, we have developed a method for analyzing the internal flow of solid rockets and contributed to the investigation of the causes of malfunctions in M-V rockets and SRB-A rockets. In the rocket propulsion system, he developed an internal flow analysis method for solid rockets and contributed to investigating the cause of the failure of the M-V rocket and SRB-A. He has also contributed to rocket research by working on rocket flight safety and radio frequency interference problems with rocket exhaust plumes. I have also conducted theoretical research on shock wave interference in high-speed electromagnetic fluids and propulsion systems using electromagnetic fluids.


Awards

 1

Papers

 95
  • Yuki Akizuki, Kimihide Odagiri, Kenichiro Sawada, Hiroshi Yoshizaki, Masahiko Sairaiji, Hiroyuki Ogawa
    Applied Thermal Engineering, 264, Apr 1, 2025  
    A loop heat pipe is a two-phase fluid loop driven by capillary force. Fabrication of a loop heat pipe evaporator by additive manufacturing has been investigated as a low-cost, quick-delivery method for producing a high-performance loop heat pipe. This study investigated the evaporation and heat transfer performance of a wick-integrated evaporator fabricated by additive manufacturing. It is essential to understand the thermal characteristics of the evaporator for a loop heat pipe with an additive-manufactured evaporator for all applications. A tested loop heat pipe with an additive-manufactured evaporator achieved a maximum heat transport capability of 120 W (heat flux: 7.96 W/cm2) and a minimum thermal resistance of 0.321 °C/W in the horizontal orientation at a 20 °C sink temperature. The evaporative heat transfer coefficient and heat leak ratio to the reservoir were calculated for each orientation test result. The maximum evaporative heat transfer coefficient was 50 kW/m2/K and the heat leak ratio was less than 10 % between 10 W and 70 W in the horizontal orientation. These results reveal that the increase in heat leakage to the reservoir due to the decrease in the evaporative heat transfer coefficient leads to the increase in the loop heat pipe operating temperature and thermal resistance. The novelty of this study is that it clarifies the relationship between a loop heat pipe's thermal resistance and evaporator thermal performance by correlating the evaporative heat transfer coefficient and the heat leakage of the wick-integrated evaporator, which uses additive manufacturing, based on the heat transport test results in each orientation.
  • Masaru Hirata, Yuki Akizuki, Kimihide Odagiri, Hiroyuki Ogawa
    International Journal of Thermal Sciences, 207, Jan, 2025  
    A cryogenic capillary pumped loop (CCPL) is a highly efficient two-phase capillary-force-driven heat transport device that operates at cryogenic temperatures. CCPL satisfies the demands for space applications in cryogenic regions as it can transport heat over long distances without mechanical moving parts. In this study, the transient internal flow during the supercritical startup of CCPL was predicted, and various temperature relationships were used to determine whether CCPL starts up or not. The utilized CCPL comprised a wick (pore radius = 1.0 μm), exhibited a heat transport distance of 2 m, and was filled with nitrogen as the working fluid. The supercritical startup experiments were performed at a temperature range of 77–300 K; the startup procedure was initiated when the maximum temperature of CCPL decreased to ∼150 K. Three different liquid supply cycles were tested during the supercritical startup, and the startup time was reduced (a maximum and minimum of 4.1 and 1.9 h, respectively). CCPL started when the evaporator temperature was below the cold reservoir temperature. Thus, the temperature relationship between the cold reservoir and evaporator at the time of applying the heat load to the evaporator could be used to determine the possibility of starting CCPL. The startup was considered successful when the cold reservoir temperature was higher than the evaporator temperature, as the cold reservoir, which exhibited a two-phase state, supplied sufficient liquid to the evaporator, filling the inside of the evaporator with liquid.
  • Takeshi Yokouchi, Xinyu Chang, Kimihide Odagiri, Hiroyuki Ogawa, Hosei Nagano, Hiroki Nagai
    International Journal of Heat and Mass Transfer, 231, Oct, 2024  
    This paper investigated the effect of filling pressure on the operating characteristics of a gravity-assisted cryogenic loop heat pipe(CLHP) for use in gravity environments such as terrestrial and lunar environments. The CLHP wick is made of sintered stainless-steel fibers with a pore radius of 1.56 μm and designed with a heat transport distance of 2.05 m. The experiments were conducted under gravity-assisted conditions (the condenser was placed 0.1 m higher than the evaporator). Notably, the filling pressure originated from the assumed vapor-liquid distribution in the CLHP under steady-state conditions. The filling pressure was varied from 2.9 MPa to 3.4 MPa in 0.1 MPa increments for six different conditions. Specifically, (1) 2.9 MPa and (2) 3.0 MPa are conditions where the heat leakage due to the vapor phase in the evaporator core is large, while (3) 3.1 MPa and (4) 3.2 MPa are conditions where there is no vapor phase in the evaporator core and the surplus vapor phase escapes to the CC. In general, this condition is considered to be the optimum amount of working fluid for room-temperature LHPs when designing. (5) 3.3 MPa and (6) 3.4 MPa are overfilling conditions that cause the CC to be filled with liquid. The results revealed that the higher the filling pressure, the more obvious the variation in operating temperature caused by the transition of drive modes. The maximum heat transfer capability reached 25 W in cases (1)-(4). In cases (5) and (6), the heat transfer capabilities increased to 30 W, although the operating temperature was higher. Furthermore, the hysteresis effect under different filling pressure conditions was newly confirmed. The power cycling experiments demonstrated that hysteresis in the operating temperature occurred at high heat loads and showed a similar trend to the room-temperature LHP.
  • Hideyuki FUKE, Shun OKAZAKI, Akiko KAWACHI, Manami KONDO, Masayoshi KOZAI, Hiroyuki OGAWA, Masaru SAIJO, Kakeru TOKUNAGA
    Journal of Evolving Space Activities, 2 156, Jul 25, 2024  Peer-reviewed
  • Kimihide Odagiri, Xinyu Chang, Hiroki Nagai, Hiroyuki Ogawa
    Applied Thermal Engineering, 255 123878-123878, Jul, 2024  
    One of the main advantages of a cryogenic loop heat pipe (CLHP) is its heat transfer capability over long distances and operability under anti-gravity conditions. However, there are only a few studies on the thermal characteristics of long-distance CLHPs. It is essential to investigate the effect of a hydraulic head on CLHP performance to enhance the utilization of CLHPs in various applications. This study investigated the thermofluidic behaviors of a 2-m nitrogen CLHP with a capillary starter pump (CSP) under horizontal and anti-gravity conditions where the evaporator was 350 mm higher than the condenser. The novelty of the study is to reveal the heat transfer characteristics and operating mechanisms under anti-gravity conditions based on comparisons with experimental results under horizontal conditions. In the CLHP, a fine stainless-steel porous wick with a pore radius of 1.0 μm and permeability of 1.3 × 10−13 m2 was used for an evaporator and the CSP. The lengths of the vapor line, condenser, and liquid line were 2000, 1500, and 2000 mm, respectively. When a heat load of 4 W was applied to the CSP and evaporator, the CLHP successfully started with an initial cooling condition called a supercritical startup under anti-gravity conditions. The startup temperature behaviors were compared under horizontal and anti-gravity conditions. The thermal resistance of the CLHP with a stepped-up evaporator heat load and various CSP heat loads was evaluated for two CLHP orientations. The CLHP stably operated under evaporator heat loads of 4–24 W (horizontal) and 4–20 W (anti-gravity) for three CSP heat loads of 0, 2, and 4 W. The effect of the CLHP orientation on the thermal resistance with various CSP heat loads is discussed. This study enhances the applicability of the long-distance CLHP to various applications with a high degree of postural freedom by revealing the operating mechanism and thermal characteristics of the long-distance CLHP under anti-gravity and horizontal conditions.

Misc.

 382
  • Philip Blumenfeld, Andreea Boca, Paul Sharps, Dennis Russell, Hiroyuki Ogawa, Hiroyuki Toyota
    2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC), 647-651, 2013  
    Emcore has been performing High Intensity High Temperature (HIHT) tests on covered, interconnected cell (CIC) assemblies. End-of-life performance of spacecraft solar panels depends to a great extent on changes in the optical properties of the CICs' coverglass adhesive during the mission. An important change in silicone coverglass adhesives is observed as degradation of short wavelength transmission, often called "darkening" or "yellowing". This is understood to be driven by exposure to high intensity UV and by exposure to elevated temperature. Solar panels on the Solar Probe Plus (SPP) spacecraft will be exposed to both high UV irradiance and elevated temperature over the course of a long mission. This paper reports on the thermal-mechanical design work performed and planned by Emcore in order to test CICs designed for SPP under these extreme conditions. Three types of thermal test designs are presented: conduction/convection with a single fixed temperature, thermal radiation with multiple fixed temperatures, and thermal radiation with a variable single temperature. We present some detail from predictive thermal models used in the test designs along with temperature data measured during the test runs.
  • Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley, Henri AartsFelix Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steve Allen, Naohisa Anabuki, Lorella Angelini, Keith Arnaud, Makoto Asai, Marc Audard, Hisamitsu Awaki, Philipp Azzarello, Chris Baluta, Aya Bamba, Nobutaka Bando, Mark Bautz, Roger Blandford, Kevin Boyce, Greg Brown, Ed Cackett, Maria Chernyakova, Paolo Coppi, Elisa Costantini, Jelle de Plaa, Jan-Willem den Herder, Michael DiPirro, Chris Done, Tadayasu Dotani, John Doty, Ken Ebisawa, Megan Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew Fabian, Carlo Ferrigno, Adam Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Stefan Funk, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi Gallo, Poshak Gandhi, Keith Gendreau, Kirk Gilmore, Daniel Haas, Yoshito Haba, Kenji Hamaguchi, Isamu Hatsukade, Takayuki Hayashi, Kiyoshi Hayashida, Junko Hiraga, Kazuyuki Hirose, Ann Hornschemeier, Akio Hoshino, John Hughes, Una Hwang, Ryo Iizuka, Yoshiyuki Inoue, Kazunori Ishibashi, Manabu Ishida, Kosei Ishimura, Yoshitaka Ishisaki, Masayuki Ito, Naoko Iwata, Naoko Iyomoto, Jelle Kaastra, Timothy Kallman, Tuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Hajime Kawahara, Madoka Kawaharada, Nobuyuki Kawai, Shigeo Kawasaki, Dmitry Khangaluyan, Caroline Kilbourne, Masashi Kimura, Kenzo Kinugasa, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Tatsuro Kosaka, Alex Koujelev, Katsuji Koyama, Hans Krimm, Aya Kubota, Hideyo Kunieda, Stephanie LaMassa, Philippe Laurent, Francois Lebrun, Maurice Leutenegger, Olivier Limousin, Michael Loewenstein, Knox Long, David Lumb, Grzegorz Madejski, Yoshitomo Maeda, Kazuo Makishima, Genevieve Marchand, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian McNamara, Jon Miller, Eric Miller, Shin Mineshige, Kenji Minesugi, Ikuyuki Mitsuishi, Takuya Miyazawa, Tsunefumi Mizuno, Hideyuki Mori, Koji Mori, Koji Mukai, Toshio Murakami, Hiroshi Murakami, Richard Mushotzky, Housei Nagano, Ryo Nagino, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Kazuhiro Nakazawa, Yoshiharu Namba, Chikara Natsukari, Yusuke Nishioka, Masayoshi Nobukawa, Masaharu Nomachi, Steve O' Dell, Hirokazu Odaka, Hiroyuki Ogawa, Mina Ogawa, Keiji Ogi, Takaya Ohashi, Masanori Ohno, Masayuki Ohta, Takashi Okajima, Atsushi Okamoto, Tsuyoshi Okazaki, Naomi Ota, Masanobu Ozaki, Frits Paerels, Stephane Paltani, Arvind Parmar, Robert Petre, Martin Pohl, F. Scott Porter, Brian Ramsey, Rubens Reis, Christopher Reynolds, Helen Russell, Samar Safi-Harb, Shin-ichiro Sakai, Hiroaki Sameshima, Jeremy Sanders, Goro Sato, Rie Sato, Yoichi Sato, Kosuke Sato, Makoto Sawada, Peter Serlemitsos, Hiromi Seta, Yasuko Shibano, Maki Shida, Takanobu Shimada, Keisuke Shinozaki, Peter Shirron, Aurora Simionescu, Cynthia Simmons, Randall Smith, Gary Sneiderman, Yang Soong, Lukasz Stawarz, Yasuharu Sugawara, Hiroyuki Sugita, Satoshi Sugita, Andrew Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Shin-ichiro Takeda, Yoh Takei, Toru Tamagawa, Takayuki Tamura, Keisuke Tamura, Takaaki Tanaka, Yasuo Tanaka, Makoto Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Yoko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Tsuru, Hiroyuki Uchida, Yasunobu Uchiyama, Hideki Uchiyama, Yoshihiro Ueda, Shiro Ueno, Shinichiro Uno, Meg Urry, Eugenio Ursino, Cor de Vries, Atsushi Wada, Shin Watanabe, Norbert Werner, Nicholas White, Takahiro Yamada, Shinya Yamada, Hiroya Yamaguchi, Noriko Yamasaki, Shigeo Yamauchi, Makoto Yamauchi, Yoichi Yatsu, Daisuke Yonetoku, Atsumasa Yoshida, Takayuki Yuasa
    Proceedings of SPIE - The International Society for Optical Engineering, 8443, Oct 16, 2012  
    The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the high-energy universe via a suite of four instruments, covering a very wide energy range, from 0.3 keV to 600 keV. These instruments include a high-resolution, high-throughput spectrometer sensitive over 0.3-2 keV with high spectral resolution of Delta E < 7 eV, enabled by a micro-calorimeter array located in the focal plane of thin-foil X-ray optics; hard X-ray imaging spectrometers covering 5-80 keV, located in the focal plane of multilayer-coated, focusing hard X-ray mirrors; a wide-field imaging spectrometer sensitive over 0.4-12 keV, with an X-ray CCD camera in the focal plane of a soft X-ray telescope; and a non-focusing Compton-camera type soft gamma-ray detector, sensitive in the 40-600 keV band. The simultaneous broad bandpass, coupled with high spectral resolution, will enable the pursuit of a wide variety of important science themes.
  • Naoko Iwata, Takashi Usui, Akihiko Miki, Yukihiro Kaizu, Mizuho Ikeda, Hiroyuki Ogawa, Tadayuki Takahashi
    42nd International Conference on Environmental Systems, Jul, 2012  Lead author
  • Hiroyuki Ogawa, Tsutomu Yamazaki, Akira Okamoto, Naoko Iwata, Shun Okazaki
    42nd International Conference on Environmental Systems, Jul, 2012  Lead author
  • 森井雄飛, 坪井伸幸, 小川博之, 寺島洋史, 徳留真一郎, 林光一
    衝撃波シンポジウム講演論文集, 2011, 2012  
  • 小川博之
    日本航空宇宙学会年会講演会講演集(CD-ROM), 43rd, 2012  
  • 岡崎峻, 福家英之, 宮崎芳郎, 大久保卓磨, 小川博之
    日本混相流学会年会講演会講演論文集, 2012, 2012  
  • 宮崎芳郎, 河合宏紀, 岩田直子, 小川博之, 福田盛介
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 小川博之, 横澤裕, 岡本章, 宮崎慈, 大貫弘和
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 長野方星, 岡崎裕幸, 野津亮太, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 岡崎峻, 福家英之, 宮崎芳郎, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 伊藤隆, 野中聡, 山本高行, 丸祐介, 八木下剛, 竹内伸介, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 井手陽介, 佐々木敦志, 石川佳太郎, 川戸博史, 野中聡, 伊藤隆, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 矢部高宏, 畠中龍太, 杉田寛之, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 小川博之, 野中聡
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 岩田直子, 小川博之, 宮崎芳郎
    日本伝熱シンポジウム講演論文集(CD-ROM), 49th, 2012  
  • 宮崎芳郎, 河合宏紀, 岩田直子, 小川博之, 福田盛介
    日本伝熱シンポジウム講演論文集(CD-ROM), 49th, 2012  
  • 奥谷翔, 長野方星, 岡崎俊, 小川博之, 永井大樹
    日本伝熱シンポジウム講演論文集(CD-ROM), 49th, 2012  
  • 岩田直子, 臼井隆, 池田瑞穂, 湯本隆宏, 阿部和弘, 小川博之, 高橋忠幸
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • 西川原理仁, 長野方星, 岡崎峻, 小川博之, 永井大樹
    宇宙科学技術連合講演会講演集(CD-ROM), 56th, 2012  
  • Atsushi Sasaki, Keitaro Ishikawa, Hiroshi Kawato, Tatsuru Tokunaga, Takashi Ito, Satoshi Nonaka, Hiroyuki Ogawa
    Proceedings of the International Astronautical Congress, IAC, 11 8842-8847, 2012  
    A new reusable sounding rocket is proposed (1) to reduce operation costs from that of existing expendable sounding rockets and (2) to provide frequent launch opportunities. This paper describes the current status of the conceptual design of the reusable sounding rocket, including system concept, mission profile and system configuration. Some of the R&D status is also presented. Copyright © (2012) by the International Astronautical Federation.
  • Ryuta Hatakenaka, Takahiro Yabe, Naoko Iwata, Hiroyuki Ogawa, Masanori Saitoh
    42nd International Conference on Environmental Systems 2012, ICES 2012, 2012  
    The inflation and peel-off characteristics of a multilayer insulation (MLI) blanket under a depressurization environment have been evaluated for establishing a JAXA design standard. The venting conductance of gas flow from inside to the outside of MLI was evaluated in a steady state test, and was confirmed to take a value of the same level regardless of shape or size or pressure level when having the same perforation, spacer type, and attachment specification. In the depressurization test, MLI was observed as not inflating in a region of higher pressure even at higher depressurization speed, while inflating in a lower pressure region. The differential pressure between the inside and outside of MLI peaks when the level of pressure drops to about one kilo pascal or less. In addition, a simple mathmatical model of MLI inflation and venting is constructed and numerical simulations based on the model are conducted, which indicate that depressurization ratio (depressurization speed per the level of pressure) and volume of MLI are the dominantparameters. © 2012 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
  • Noda Hirofumi, Iwata Naoko, Ogawa Hiroyuki, Ohno Masanori, Fukazawa Yasushi, Tajima Hiroyasu, Uchiyama Hideki, Nakazawa Kazuhiro, Makishima Kazuo, Kawaharada Madoka, Masayuki Ohta, Watanabe Shin, Kokubun Motohide, Takahashi Tadayuki
    Meeting Abstracts of the Physical Society of Japan, 67(1) 139-139, 2012  
  • Ohno Masanori, Kokubun Motohide, Takahashi Tadayuki, Iwata Naoko, Ogawa Hiroyuki, Noda Hirofumi, Ohta Masayuki, Fukazawa Yasushi, Tajime Hiroyasu, Nakazawa Kazuhiro, Makishima Kazuo, Watanabe Shin
    Meeting Abstracts of the Physical Society of Japan, 67(1) 140-140, 2012  
  • Hiroyuki Ogawa, Tsutomu Yamazaki, Akira Okamoto, Naoko Iwata, Shun Okazaki, Tomoko Irikado, Fuyuko Fukuyoshi
    41st International Conference on Environmental Systems, AIAA-2011-518, Jul, 2011  Lead author
  • MORII Youhi, OGAWA Yousuke, TSUBOI Nobuyuki, OGAWA Hiroyuki, TOKUDOME Shinichiro, HAYASHI A.Koichi
    火薬学会秋季研究発表講演会講演要旨集, 2011, 2011  
  • 大山聖, 永井大樹, 竹内伸介, 豊田裕之, 砂田茂, 得竹浩, 小川博之, 戸田和朗, 小池勝, 元田敏和, 藤田和央
    日本航空宇宙学会年会講演会講演集(CD-ROM), 42nd, 2011  
  • 森井雄飛, 小川洋昌, 坪井伸幸, 小川博之, 徳留真一郎, 林光一
    火薬学会年会講演要旨集, 2011, 2011  
  • 小川博之
    ISASニュース, (369), 2011  
  • 岡崎峻, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 55th, 2011  
  • 岩田直子, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 55th, 2011  
  • 川崎春夫, 岡本篤, 杉田寛之, 小川博之, 田中好和, 三井浩一, 金森康郎, 加藤秀, 関時明, 小林孝
    宇宙科学技術連合講演会講演集(CD-ROM), 55th, 2011  
  • 嶋田貴信, 豊田裕之, 久木田明夫, 今泉充, 廣瀬和之, 小川博之, 前島弘則, 早川基, 田島道夫, 渡部浩一, 野崎幸重, 岡本章, 久松正, 島田啓二, 中村一世, 高本達也
    宇宙科学技術連合講演会講演集(CD-ROM), 55th, 2011  
  • 河合宏紀, 宮崎芳郎, 岩田直子, 小川博之
    宇宙科学技術連合講演会講演集(CD-ROM), 55th, 2011  
  • 畠中龍太, 斎藤雅規, 矢部高宏, 岩田直子, 小川博之, 川崎春夫, 杉田寛之
    宇宙科学技術連合講演会講演集(CD-ROM), 55th, 2011  
  • 森井雄飛, 坪井伸幸, 小川博之, 徳留真一郎, 林光一
    燃焼シンポジウム講演論文集, 49th, 2011  
  • 永井大樹, 玉村大道, 真籠耕平, 長野方星, 小川博之
    日本混相流学会年会講演会講演論文集, 2011, 2011  
  • 黒井正和, 長野方星, 岡本篤, 小川博之
    日本混相流学会年会講演会講演論文集, 2011, 2011  
  • 岩田直子, 小川博之, 宮崎芳郎
    Thermophysical Properties, 32nd, 2011  
  • 森井雄飛, 坪井伸幸, 小川博之, 徳留真一郎, 林光一
    数値流体力学シンポジウム講演論文集(CD-ROM), 25th, 2011  
  • Noda Hirofumi, Takahashi Tadayuki, Kokubun Motohide, Watanabe Shin, Ogawa Hiroyuki, Iwata Naoko, Fukazawa Yasushi, Makishima Kazuo, Nakazawa kazuhiro, Sakurai Souki, Sasano Makoto, Nakano Toshio, Tajima Hiroyasu, Tanaka Takaaki, Enoto Teruaki
    Meeting Abstracts of the Physical Society of Japan, 66(1) 122-122, 2011  
  • Noda Hirofumi, Ogawa Hiroyuki, Iwata Naoko, Fukazawa Yasushi, Ohno Masanori, SGD team, Makishima Kazuo, Nakazawa Kazuhiro, Tajima Hiroyasu, Tanaka Takaaki, Enoto Teruaki, Takahashi Tadayuki, Kokubun Motohide, Watanabe Shin
    Meeting Abstracts of the Physical Society of Japan, 66(2) 113-113, 2011  
  • Satoshi Nonaka, Hiroyuki Ogawa, Yoshihiro Naruo, Yoshifumi Inatani
    20TH ESA SYMPOSIUM ON EUROPEAN ROCKET AND BALLOON PROGRAMMES AND RELATED RESEARCH, 700 137-142, 2011  
    A fully reusable sounding rocket is proposed in ISAS/JAXA. Vehicle systems and ground / flight operations are conceptually designed for observations of atmospheric phenomena, micro-gravity experiments and so on. The present design of the reusable sounding rocket is summarized. In phase A in the proposed reusable sounding rocket project, technical demonstrations for key technologies to develop the reusable sounding rocket are planed as follows; 1) reusable engine development and repeated engine operation development, 2) reusable insulation development for cryogenic tank, 3) aerodynamic design and flight demonstration for returning flight, 4) fuel/oxidizer management demonstration, 5) landing gear development and 6) health management system construction.
  • KAWAI Hiroki, MIYAZAKI Yoshiro, IWATA Naoko, OGAWA Hiroyuki
    Proceedings of National Heat Transfer Symposium, 48th 93-93, 2011  Peer-reviewed
  • Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley, Felix Aharonian, Fumie Akimoto, Steve Allen, Naohisa Anabuki, Lorella Angelini, Keith Arnaud, Hisamitsu Awaki, Aya Bamba, Nobutaka Bando, Mark Bautz, Roger Blandford, Kevin Boyce, Greg Brown, Maria Chernyakova, Paolo Coppi, Elisa Costantini, Jean Cottam, John Crow, Jelle de Plaa, Cor de Vries, Jan-Willem den Herder, Michael DiPirro, Chris Done, Tadayasu Dotani, Ken Ebisawa, Teruaki Enoto, Yuichiro Ezoe, Andrew Fabian, Ryuichi Fujimoto, Yasushi Fukazawa, Stefan Funk, Akihiro Furuzawa, Massimiliano Galeazzi, Poshak Gandhi, Keith Gendreau, Kirk Gilmore, Yoshito Haba, Kenji Hamaguchi, Isamu Hatsukade, Kiyoshi Hayashida, Junko Hiraga, Kazuyuki Hirose, Ann Hornschemeier, John Hughes, Una Hwang, Ryo Iizuka, Kazunori Ishibashi, Manabu Ishida, Kosei Ishimura, Yoshitaka Ishisaki, Naoki Isobe, Masayuki Ito, Naoko Iwata, Jelle Kaastra, Timothy Kallman, Tuneyoshi Kamae, Hideaki Katagiri, Jun Kataoka, Satoru Katsuda, Madoka Kawaharada, Nobuyuki Kawai, Shigeo Kawasaki, Dmitry Khangaluyan, Caroline Kilbourne, Kenzo Kinugasa, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Tatsuro Kosaka, Taro Kotani, Katsuji Koyama, Aya Kubota, Hideyo Kunieda, Philippe Laurent, Francois Lebrun, Olivier Limousin, Michael Loewenstein, Knox Long, Grzegorz Madejski, Yoshitomo Maeda, Kazuo Makishima, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Jon Miller, Shin Mineshige, Kenji Minesugi, Takuya Miyazawa, Tsunefumi Mizuno, Koji Mori, Hideyuki Mori, Koji Mukai, Hiroshi Murakami, Toshio Murakami, Richard Mushotzky, Yujin Nakagawa, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Kazuhiro Nakazawa, Yoshiharu Namba, Masaharu Nomachi, Steve O' Dell, Hiroyuki Ogawa, Mina Ogawa, Keiji Ogi, Takaya Ohashi, Masanori Ohno, Masayuki Ohta, Takashi Okajima, Naomi Ota, Masanobu Ozaki, Frits Paerels, Stéphane Paltani, Arvind Parmer, Robert Petre, Martin Pohl, Scott Porter, Brian Ramsey, Christopher Reynolds, Shin-ichiro Sakai, Rita Sambruna, Goro Sato, Yoichi Sato, Peter Serlemitsos, Maki Shida, Takanobu Shimada, Keisuke Shinozaki, Peter Shirron, Randall Smith, Gary Sneiderman, Yang Soong, Lukasz Stawarz, Hiroyuki Sugita, Andrew Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Yoh Takei, Toru Tamagawa, Takayuki Tamura, Keisuke Tamura, Takaaki Tanaka, Yasuo Tanaka, Yasuyuki Tanaka, Makoto Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Miyako Tozuka, Yoko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Tsuru, Hiroyuki Uchida, Yasunobu Uchiyama, Hideki Uchiyama, Yoshihiro Ueda, Shinichiro Uno, Meg Urry, Shin Watanabe, Nicholas White, Takahiro Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Yoichi Yatsu, Daisuke Yonetoku, Atsumasa Yoshida
    SPACE TELESCOPES AND INSTRUMENTATION 2010: ULTRAVIOLET TO GAMMA RAY, 7732, Oct 24, 2010  
    The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the high-energy universe by performing high-resolution, high-throughput spectroscopy with moderate angular resolution. ASTRO-H covers very wide energy range from 0.3 keV to 600 keV. ASTRO-H allows a combination of wide band X-ray spectroscopy (5-80 keV) provided by multilayer coating, focusing hard X-ray mirrors and hard X-ray imaging detectors, and high energy-resolution soft X-ray spectroscopy (0.3-12 keV) provided by thin-foil X-ray optics and a micro-calorimeter array. The mission will also carry an X-ray CCD camera as a focal plane detector for a soft X-ray telescope (0.4-12 keV) and a non-focusing soft gamma-ray detector (40-600 keV) . The micro-calorimeter system is developed by an international collaboration led by ISAS/JAXA and NASA. The simultaneous broad bandpass, coupled with high spectral resolution of Delta E ~7 eV provided by the micro-calorimeter will enable a wide variety of important science themes to be pursued.
  • Shun Okazaki, Hiroyuki Ogawa
    40th International Conference on Environmental Systems, AIAA-2010-6056, Jul, 2010  
  • Hiroyuki OGAWA, Tsutomu YAMAZAKI, Akira OKAMOTO, Shigeru MIYAZAKI, Hirokazu OHNUKI, Fuyuko Fukuyoshi, Naoko Iwata
    40th International Conference on Environmental Systems, AIAA-2010-6089, Jul, 2010  
  • T. Shimada, H. Toyota, A. Kukita, M. Imaizumi, K. Hirose, M. Tajima, H. Ogawa, H. Hayakawa, A. Okamoto, Y. Nozaki, H. Watabe, T. Hisamatsu
    Conference Record of the IEEE Photovoltaic Specialists Conference, 1112-1117, 2010  Peer-reviewed
    The Japan Aerospace Exploration Agency has been developing the Mercury Magnetospheric Orbiter (MMO), which is Japanese part of the BepiColombo mission. During its mission around Mercury, the spacecraft will be exposed to high solar irradiance of up to 11 suns, with an estimated maximum solar panel temperature of 230°C. In such an environment, solar cells are required to operate under high intensity and high temperature (HIHT) conditions. Therefore, it is necessary to evaluate the durability of solar cells to meet the power requirements throughout the mission life. We conducted a continuous operation test under HIHT conditions to examine the validity of the solar array configuration, using the interior planetary thermal vacuum chamber. Our HIHT tests clarified the following facts: (i) Transparency of the coverglass and the performance of the solar cells do not degrade and (ii) transparency of the DC93-500 adhesive in the top cell response region degrades mainly due to ultraviolet exposure at high temperatures. We decided to use AR0213 coverglass (from JDSU) with a thickness of 300 μm, which have a longer cut-on wavelength in ultraviolet region. With this configuration, the predicted decrease in Pmax due to the HIHT environment is 17.3% and that due to radiation effects is 11.0% Our new design will offer the available power at EOL of 394.2 W, which is 46.7 W greater than the required power. © 2010 IEEE.
  • 森井雄飛, 坪井伸幸, 越光男, 小川博之, 徳留真一郎
    衝撃波シンポジウム講演論文集, 2009, 2010  
  • Hosei Nagano, Fuyuko Fukuyoshi, Hiroyuki Ogawa, Hiroki Nagai
    40th International Conference on Environmental Systems, ICES 2010, 2010  Peer-reviewed
    This paper reports development of an experimental small LHP with PTFE wick. PTFE porous materials with 0.8 - 2.2 μm pore radius were fabricated and the basic properties were evaluated. An experimental small LHP with the PTFE wicks was designed and tested in an atmospheric condition. A PTFE wick with 1.2 μm pore radius was used to demonstrate the loop performance. The test results showed excellent operating characteristics of the LHP. © 2010 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

Books and Other Publications

 1

Presentations

 33

Research Projects

 10

Industrial Property Rights

 6

Academic Activities

 1

● 指導学生等の数

 6
  • Fiscal Year
    2018年度(FY2018)
    Doctoral program
    1
  • Fiscal Year
    2019年度(FY2019)
    Doctoral program
    2
    Master’s program
    1
    JSPS Research Fellowship (Young Scientists)
    1
  • Fiscal Year
    2020年度(FY2020)
    Doctoral program
    1
    Master’s program
    1
    JSPS Research Fellowship (Young Scientists)
    1
  • Fiscal Year
    2018年度(FY2018)
    Doctoral program
    1
  • Fiscal Year
    2019年度(FY2019)
    Doctoral program
    2
    Master’s program
    1
    JSPS Research Fellowship (Young Scientists)
    1
  • Fiscal Year
    2020年度(FY2020)
    Doctoral program
    1
    Master’s program
    1
    JSPS Research Fellowship (Young Scientists)
    1

● 専任大学名

 2
  • Affiliation (university)
    東京大学(University of Tokyo)
  • Affiliation (university)
    東京大学(University of Tokyo)

● 所属する所内委員会

 6
  • ISAS Committee
    研究所会議
  • ISAS Committee
    プログラム会議
  • ISAS Committee
    信頼性品質会議
  • ISAS Committee
    環境・安全管理統括委員会
  • ISAS Committee
    ISASニュース編集小委員会
  • ISAS Committee
    宇宙科学プログラム技術委員会