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6. 雲・放射ミッションの研究:A-Lidarの研究

Author

Imai, Tadashi, Kawamura, Yasuaki, Saki, Nobuo, 今井 正, 川村 恭明, 佐木 誠夫, Imai, Tadashi, Kawamura, Yasuaki, Saki, Nobuo, 今井 正, 川村 恭明, and 佐木 誠夫

Abstract

NASDA Special Publication, 宇宙開発事業団特別報告

Published
2015

7. 小型超音速実験機(ロケット実験機; NEXST-1)第2回飛行実験

Author

Onuki, Takeshi, Machida, Shigeru, Yoshida, Kenji, Oka, Noriaki, Kwak, Dong-Youn, Takatoya, Takeshi, Tada, Akira, Honda, Masahisa, Mizuno, Takuya, Kawamura, Yasuaki, 大貫 武, 町田 茂, 吉田 憲司, 岡 範全, 高戸谷 健, 多田 章, 本田 雅久, 水野 拓哉, 川村 恭明, Onuki, Takeshi, Machida, Shigeru, Yoshida, Kenji, Oka, Noriaki, Kwak, Dong-Youn, Takatoya, Takeshi, Tada, Akira, Honda, Masahisa, Mizuno, Takuya, Kawamura, Yasuaki, 大貫 武, 町田 茂, 吉田 憲司, 岡 範全, 高戸谷 健, 多田 章, 本田 雅久, 水野 拓哉, and 川村 恭明

Abstract

The flight trial of the unmanned experimental airplane was conducted by Japan Aerospace Exploration Agency (JAXA) in order to substantiate supersonic drag reduction technology with a CFD (Computational Fluid Dynamics)-based optimum aerodynamic design procedure and to establish the experimental system with the non-powered and unmanned supersonic experimental airplane (NEXST-1: National EXperimental Supersonic Transport-1). The airplane configuration was designed using the inverse method giving the preferable pressure distribution to minimize the aerodynamic drag force at Mach Number two. On October 10, 2005, the second trial of the NEXST-1 was conducted in Woomera test range of South Australia. Every system had accomplished each work successfully and the NEXST-1 including a data recorder was recovered safely. This report shows the modification of the experimental airplane system after the first trial and the results of the second trial., 宇宙航空研究開発機構・航空プログラムグループが研究を進めている超音速機技術の飛行実証として、2005年10月に南オーストラリア州ウーメラ実験場において小型超音速実験機(NEXST-1: National EXperimental Supersonic Transport-1)の第2回飛行実験を実施した。小型超音速実験機プロジェクトの主要な目的は、次世代SST(SuperSonic Transport)開発を睨んだ最適空力設計技術の開発とその飛行実験による実証である。2002年7月に実施した第1回飛行実験の失敗を受け、改修設計・製造および各種地上試験を行った上、第2回飛行実験に臨んだ。本報告書では、第1回飛行実験以降の小型超音速実験機システムの改修設計・開発および改修設計の妥当性検証内容を概説すると共に、第2回飛行実験の結果について飛行実証項目を中心に報告する。, JAXA Research and Development Report, 宇宙航空研究開発機構研究開発報告

Published
2015

8. Earth observation sensor studies: Study of LIDAR

Author

Imai, Tadashi, Tatsumi, Kenji, Kawamura, Yasuaki, Tanioka, Noritaka, 今井 正, 辰巳 賢ニ, 川村 恭明, 谷岡 憲隆, Imai, Tadashi, Tatsumi, Kenji, Kawamura, Yasuaki, Tanioka, Noritaka, 今井 正, 辰巳 賢ニ, 川村 恭明, and 谷岡 憲隆

Abstract

A lidar is an active optical sensor that observes atmospheric conditions by projecting laser beams into the atmosphere to measure reflected light. NASDA has started to develop a lidar unit that can be placed aboard satellites and the results of flight observation experiments using the airborne Mie-scattering lidar were reviewed. A photon counting Si-APD (Avalanche Photo Diode) was equipped as a detector that had a higher sensitivity than a photomultiplier tube. The airborne observations were made five times in November 1997. The experiments showed that the photon-counting lidar unit performed almost as designed. The analog lidar unit also performed well, but its detector sensitivity was low. There were problems with its response characteristics when strong reflected light was received., ライダは、レーザビームを大気に照射して反射光を計測することによって、大気状態を観測する能動型光学センサである。NASDAは、衛星搭載可能なライダユニットの開発に着手し、航空機用ミー散乱ライダを用いた観測飛翔実験結果について検証した。光子計数型シリコンAPD(アバランシェ・フォトダイオード)を検出器として用いた。これは高感度の光電子増倍管である。航空機観測を1997年11月に5回行った。光子計数型ライダユニットはほぼ設計通りの性能を持つことを実験によって示した。アナログライダユニットの性能も良好であったが、検出器の感度は低かった。この検出器は、強い反射光が入射した時の感度特性に問題があった。

Published
2015

9. The second flight experiment of the supersonic experimental airplane (NEXST-1)

Author

Kwak, Dong-Youn, Onuki, Takeshi, Machida, Shigeru, Yoshida, Kenji, Oka, Noriaki, Takatoya, Takeshi, Tada, Akira, Honda, Masahisa, Mizuno, Takuya, and Kawamura, Yasuaki

Subjects
validation, リバースエンジニアリング, 超音速機, NEXST-1, 計算流体力学, computational fluid dynamics, friction drag, research aircraft, 実験機, 層流翼型, reverse engineering, pilotless aircraft, 実証, flight test, 摩擦抗力, 飛行試験, 無人飛行機, 航空機設計, supersonic aircraft, aircraft design, laminar flow airfoil
Abstract

宇宙航空研究開発機構・航空プログラムグループが研究を進めている超音速機技術の飛行実証として、2005年10月に南オーストラリア州ウーメラ実験場において小型超音速実験機(NEXST-1: National EXperimental Supersonic Transport-1)の第2回飛行実験を実施した。小型超音速実験機プロジェクトの主要な目的は、次世代SST(SuperSonic Transport)開発を睨んだ最適空力設計技術の開発とその飛行実験による実証である。2002年7月に実施した第1回飛行実験の失敗を受け、改修設計・製造および各種地上試験を行った上、第2回飛行実験に臨んだ。本報告書では、第1回飛行実験以降の小型超音速実験機システムの改修設計・開発および改修設計の妥当性検証内容を概説すると共に、第2回飛行実験の結果について飛行実証項目を中心に報告する。, The flight trial of the unmanned experimental airplane was conducted by Japan Aerospace Exploration Agency (JAXA) in order to substantiate supersonic drag reduction technology with a CFD (Computational Fluid Dynamics)-based optimum aerodynamic design procedure and to establish the experimental system with the non-powered and unmanned supersonic experimental airplane (NEXST-1: National EXperimental Supersonic Transport-1). The airplane configuration was designed using the inverse method giving the preferable pressure distribution to minimize the aerodynamic drag force at Mach Number two. On October 10, 2005, the second trial of the NEXST-1 was conducted in Woomera test range of South Australia. Every system had accomplished each work successfully and the NEXST-1 including a data recorder was recovered safely. This report shows the modification of the experimental airplane system after the first trial and the results of the second trial., 資料番号: AA0063991000, レポート番号: JAXA-RR-06-049

Published
2007

13. スペックルが重畳する干渉縞を形成する拡散面計測用下渉計

Author

Nishiwaki, Akira, primary, Kida, Keisuke, additional, Takada, Naoto, additional, Yamaguchi, K., additional, Ueda, A., additional, Yoneda, H., additional, Ueda, K., additional, Okada, T., additional, Morishita, K., additional, Higuchi, Y., additional, Tanioka, Noritaka, additional, Kawamura, Yasuaki, additional, Tatsumi, Kenji, additional, Imai, Tadasi, additional, YOSHIKADO, Shin, additional, KITA, Shin-ichi, additional, ARUGA, Tadashi, additional, Koga, Nobuhiko, additional, Sugimoto, Nobuo, additional, Ozawa, Kenichi, additional, Ito, Takashi, additional, Shinoda, Kenji, additional, Saito, Yasunori, additional, Aoki, Tetsuo, additional, Itabe, Toshikazu, additional, Matsuzaka, Fumio, additional, Yokozawa, Takeshi, additional, Hara, Hiroshi, additional, Nakajima, Hayato, additional, Yamamoto, Takanobu, additional, Kashihara, A., additional, Murai, K., additional, Umehara, M., additional, Kurioka, Y., additional, Takigawa, Y., additional, Nakayama, Kunihiko, additional, Nakane, Masayo, additional, Ashibe, Kusuo, additional, Motoyoshi, Kazuhito, additional, Sano, Yuuji, additional, Teramura, Y., additional, Suzuki, K., additional, Suzuki, M., additional, Takasago, K., additional, Kannari, F., additional, Wakaumi, Hiroo, additional, Ajiki, Hiroshi, additional, TAKIZAWA, Minoru, additional, ASHIDATE, Shu-ichi, additional, MURASHIMA, Susumu, additional, FUJII, Noritsuna, additional, Miyazaki, Satoru, additional, Tuda, Norio, additional, Sito, Susumu, additional, Yamada, Jun, additional, Kunimori, H., additional, Kano, Masashi, additional, Kawai, Takahumi, additional, Otuka, Tomoya, additional, Toyoda, Koichi, additional, and Yamada, Etsuo, additional

Published
1998
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16. NASDA ELISE (MDS-lidar) program.

Author

Imai, Tadashi, Kawamura, Yasuaki, Tanioka, Noritaka, Asai, Kazuhiro, Itabe, Toshikasu, Uchino, Osamu, Kobayashi, Takao, Sasano, Yasuhiro, and Aoyagi, Toshinori

Published
1997
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23. Effect of Annealing on Low-Temperature Thermal Conductivity of High-Density Polyethylene

Author

Kawamura, Yasuaki

Abstract

Thermal conductivity of high-density polyethylene was measured by the steady-flow method at temperatures from 4.2 to 20°K. Results were analysed assuming two scattering processes of phonons: grain boundary scattering with a mean free path ?Gwhich is independent of phonon wave number k and intragrain scattering with a mean free path ?D=A/ak2. It was found that ?G=0.48 µ and A/a=0.51×1010cm-1for the as-received sample, and both increase with annealing. The radius of spherulite which was kept constant with annealing ranged 5 to 10 µ. ?Gis attributed to the extension of lamellar crystallite in the ab-plane. ?Dis assigned to intralamellar sub-boundaries. According to results in literature, the ratio of thermal conductivity K to specific heat C is almost constant from 1 to 3°K, where the grain boundary scattering is predominant. Since at 1°K the contribution of two-dimensional lattice waves (Lamb waves in lamellae) is more appreciable than three-dimensional ones, the above result implies that ?Gis the same for the two types of waves, which is consistent with our conclusion for ?G.

Published
1970
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26. Evaluation of left atrial function by 99mTc gated blood pool scan.

Author

KAWAMURA, Yasuaki, primary, YAMAZAKI, Junichi, additional, OKUZUMI, Ichio, additional, MUTO, Toshinori, additional, WAKAKURA, Manabu, additional, OKAMOTO, Kiyoshi, additional, AOKI, Riuko, additional, IIDA, Mihoko, additional, MORISHITA, Takeshi, additional, Nakagome, Toshio, additional, TAKANO, Masaaki, additional, and MARUYAMA, Yuzo, additional

Published
1989
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27. Effect of hemodialysis on left and right ventricular function - Evaluation using electrocardiogram gated radionuclide ventriculography.

Author

MUTO, Toshinori, primary, MORISHITA, Takeshi, additional, IIDA, Shun, additional, YAMAZAKI, Junichi, additional, AOKI, Ryuko, additional, KAWAMURA, Yasuaki, additional, OKUZUMI, Ichio, additional, OHARA, Takehiro, additional, MORIKI, Mitsuji, additional, HIRATA, Kiyofumi, additional, and SASAKI, Yasuhito, additional

Published
1986
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28. Radionuclide imaging for assessment of myocarditis and postmyocarditic state in infant and children. Thallium-201 myocardial imaging and technetium-99m-HSA gated equilibrium ventriculography.

Author

SAJI, Tsutomu, primary, MATSUO, Norio, additional, HASHIGUCHI, Reiko, additional, SATO, Keiko, additional, UMEZAWA, Tetsuro, additional, MORISHITA, Ken, additional, YAMAZAKI, Junichi, additional, KAWAMURA, Yasuaki, additional, OKUZUMI, Kazuo, additional, and YABE, Yoshimasa, additional

Published
1985
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30. The evaluation of cardiac function and the effect of therapy in acute myocardial infarction. Comparison by radio nuclide method in acute and chronic phase.

Author

MORISHITA, Takeshi, primary, YAMAZAKI, Junichi, additional, KAWAMURA, Yasuaki, additional, IIDA, Mihoko, additional, OKUZUMI, Ichio, additional, MUTO, Toshinori, additional, WAKAKURA, Manabu, additional, SAITO, Toru, additional, KAMIJIMA, Gonbei, additional, and SASAKI, Yasuhito, additional

Published
1987
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