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Under-estimation of space environmental effects on materials in ground-based studies and new testing standards

Research Project

Project/Area Number 19K22017
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 24:Aerospace engineering, marine and maritime engineering, and related fields
Research InstitutionKobe University

Principal Investigator

Tagawa Masahito  神戸大学, 工学研究科, 准教授 (10216806)

Co-Investigator(Kenkyū-buntansha) 横田 久美子  神戸大学, 工学研究科, 助手 (20252794)
Project Period (FY) 2019-06-28 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords宇宙環境 / 原子状酸素 / 超低地球軌道 / 材料劣化 / 国際標準 / 地球高層大気 / 窒素分子 / ポリイミド / 観測ロケット / ポリイミド劣化 / 地上試験
Outline of Research at the Start

宇宙用材料・システムは宇宙環境の影響により特性変化・劣化を受けることが知られており、軌道上試験・地上模擬試験を用いた研究が行われてきたが、両者の結果には不整合が報告されている。さらに最近の研究ではこれまで考慮されてこなかった窒素分子の同時衝突が、材料劣化に大きな影響を与えることが報告されている。本研究課題ではレーザーデトネーション型原子状酸素環境模擬実験装置に新規原子状酸素センサー等を用いることにより、ポリイミドを基準材料としている現状の国際基準の不完全性を明確化し、科学的に根拠のある新基準の確立・提案を目指す。

Outline of Final Research Achievements

The objective of this research project is to clarify origins of incompleteness of the current international standards that use polyimide as a reference material, and to propose a new standard with scientific background. From a result of the simultaneous irradiation experiments conducted in this study, the polyimide degradation rate increased linearly with the ratio of high-energy molecules in the beam. This result clarifies the major origin of error in material degradation in very low Earth orbit (VLEO) using polyimide as a standard. The same phenomenon was also confirmed by the flight data of the world's first VLEO satellite, SLATS. This finding is an important insight into the material degradation phenomenon and its test method applicable to VLEO.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果により、宇宙材料劣化地上試験と軌道上試験で生じる材料劣化試験の不整合問題の主たる原因がビーム中の高エネルギー分子衝突であることが特定され、地上試験における原子状酸素照射量の過大評価や今後の高精度化に向けた方向性が明確化された。さらに超低地球軌道(VLEO)衛星など材料劣化がクリティカルなミッションでの評価基準に関わる知見が得られ、国際基準への反映の必要性が認識された。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (65 results)

All 2022 2021 2020 2019 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (56 results) (of which Int'l Joint Research: 32 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Laser-detonation hyperthermal beam source applicable to VLEO environmental simulations2022

    • Author(s)
      Masahito Tagawa, Ryota Okura, Wataru Ide, Sasuga Horimoto, Keisuke Ezaki, Atsushi Fujita, Kosuke Shoda, Kumiko Yokota,
    • Journal Title

      CEAS Space Journal

      Volume: 14

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anisotropic molecular scattering at microstructured surface for rarefied gas compression inside air breathing ion engine2022

    • Author(s)
      Kosuke Shoda, Naoki Kano, Yuki Jotaki, Keisuke Ezaki, Kazuki Itatani, Takashi Ozawa, Yusuke Yamashita, Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
    • Journal Title

      CEAS Space Journal

      Volume: 14

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 原子状酸素照射による高分子材料表面の微細構造形成:メカニズム解明に向けたフルエンス補正2021

    • Author(s)
      後藤亜希、山下真一、田川雅人
    • Journal Title

      放射線化学

      Volume: 111 Pages: 59-61

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of simultaneous N2 collisions on atomic oxygen-induced polyimide erosion in sub-low Earth orbit: comparison of laboratory and SLATS data2021

    • Author(s)
      Kumiko Yokota, Masahito Tagawa, Yusuke Fujimoto, Wataru Ide, Yugo Kimoto, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Shunsuke Imamura
    • Journal Title

      CEAS Space Journal

      Volume: 13 Pages: 389-397

    • NAID

      120007124107

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Study of rarefied aerodynamics for super low altitude satellite2021

    • Author(s)
      Takashi Ozawa, Shunsuke Imamura, Masahito Tagawa, Kazuhisa Fujita
    • Journal Title

      Aerospace Technology Japan

      Volume: 19 Pages: 407-414

    • NAID

      130008034519

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Investigation and Experimental Simulation of Performance Deterioration of Microwave Discharge Ion Thruster μ10 during Space Operation2020

    • Author(s)
      Ryo Shirakawa, Yusuke Yamashita, Daiki Koda, Ryudo Tsukizaki, Yusuke Shimizu, Masahito Tagawa, Kazutaka Nishiyama
    • Journal Title

      Acta Astronautica,

      Volume: 174 Pages: 367-376

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 宇宙機近傍プラズマ現象の数値シミュレーション2019

    • Author(s)
      三宅洋平, 臼井英之, 桐山武士, 白川遼, 田川雅人
    • Journal Title

      混相流

      Volume: 33 Pages: 258-266

    • NAID

      130007730019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Passive compression device in molecular flow by surface scattering: A key device for spacecraft intake system2022

    • Author(s)
      Masahito Tagawa, Yusaku Ashida Koki Sugimoto, Kosuke Shoda, Keisuke Ezaki, Kumiko Yokota, Takashi Ozawa, Yusuke Yamashita, Kazutaka Nishiyama
    • Organizer
      The 5th International Workshop on Scattering of Atoms and Molecules from Surfaces
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Shielding effect of atomic oxygen by satellite structure observed on SLATS and its compensation for material exposure experiment2022

    • Author(s)
      Masahito Tagawa, Kumiko Yokota, Wataru Ide, Atsushi Fujita, Shohei Urakawa, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yugo Kimoto
    • Organizer
      15th International Symposium on Materials in a Space Environment / 13th International Conference on Protection of Materials and Systems from Space Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] N2-acceleration effect on atomic oxygen-induced polyimide erosion in sub-LEO observed by SLATS/AOFS2022

    • Author(s)
      Kumiko Yokota, Masahito Tagawa, Wataru Ide, Atsushi Fujita, Sasuga Horimoto, Santa Nishioka, Keisuke Ezaki, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yugo Kimoto
    • Organizer
      15th International Symposium on Materials in a Space Environment / 13th International Conference on Protection of Materials and Systems from Space Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of neutral atmosphere environment on SLATS2022

    • Author(s)
      Yugo Kimoto, Yuta Tsuchiya, Eiji Miyazaki, Aki Goto, Kazuki Yukumatsu, Shunsuke Imamura, Haruo Kawasaki, Masanori Sasaki, Kumiko Yokota, Masahito Tagawa, Wataru Ide, Atsushi Fujita, Shohei Urakawa, Sasuga Horimoto, Santa Nishioka
    • Organizer
      15th International Symposium on Materials in a Space Environment / 13th International Conference on Protection of Materials and Systems from Space Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Space polymers erosion in simulated LEO and VLEO environments2022

    • Author(s)
      Zilina Iskanderova, Jacob Kleiman, Masahito Tagawa, Santa Nishioka, Sasuga Horimoto
    • Organizer
      15th International Symposium on Materials in a Space Environment / 13th International Conference on Protection of Materials and Systems from Space Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Perspective on Atomic Oxygen Reaction with Thermal Control Materials in Space2022

    • Author(s)
      Masahito Tagawa, Kumiko Yokota
    • Organizer
      The 13th Asian Thermophysical Properties Conference,
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Performance change of field emission cathode by atomic oxygen irradiation2022

    • Author(s)
      Keisuke Ezaki, Kazuki Itatani, Yuki Fukami, Yusaku Ashida, Yasushi Ohkawa, Satomi Kawamoto, Kumiko Yokota, Masahito Tagawa
    • Organizer
      The 13th Asian Thermophysical Properties Conference,
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A research on material degradation of spacecraft in sub-low Earth orbit environment -An estimate of the contribution of inert molecule’s energy to the acceleration effect of the erosion of polyimide -2022

    • Author(s)
      Sasuga Horimoto, Santa Nishioka, Wataru Ide, Kumiko Yokota, Masahito Tagawa
    • Organizer
      The 13th Asian Thermophysical Properties Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Surface erosion of carbon-based materials in VLEO space environment: Collision-induced desorption by atmospheric N2 associated with oxidation by O2022

    • Author(s)
      Kumiko Yokota, Sasuga Horimoto, Wataru Ide, Santa Nishioka, Masahito Tagawa
    • Organizer
      The 14th International Symposium on Atomic Level Characterization of New Materials and Devices ‘22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Scattering behavior of atoms at polymer surface exposed to ISS space environment2022

    • Author(s)
      Masahito Tagawa, Keisuke Ezaki, Kosuke Shoda, Yusaku Ashida, Koki Sugimoto, Kumiko Yokota, Nozomu Kogiso, Hiroaki Tanaka
    • Organizer
      The 14th International Symposium on Atomic Level Characterization of New Materials and Devices ‘22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Scattering behavior of thermal molecular beams at microstructured surface for high compression intake system of air breathing ion engine2022

    • Author(s)
      Keisuke Ezaki, Kosuke Shoda, Kazuki Itatani, Yuki Jotaki, Yuki Jotaki, Yusaku Ashida, Koki Sugimoto, Takashi Ozawa, Yusuke Yamashita, Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
    • Organizer
      33rd International Symposium on Space Technology and Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of atmospheric density probe aboard S-520-32 sounding rocket2022

    • Author(s)
      Shoma Taira, Taishi Kato, Momoka Shimoi, Taiga Adachi, Towa Ushijima, Yusuke Yamashita, Takashi Ozawa, Takumi Abe, Yoshinori Nakayama, Kumiko Yokota, Masahito Tagawa
    • Organizer
      33rd International Symposium on Space Technology and Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ground-based experiment for simultaneous N2 collision effect on atomic oxygen-induced polyimide erosion in sub-low Earth orbit2022

    • Author(s)
      Sasuga Horimoto, Atsushi Fujita, Shohei Urakawa, Santa Nishioka, Wataru Ide, Kumiko Yokota, Masahito Tagawa
    • Organizer
      33rd International Symposium on Space Technology and Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Result of Exposure Experiment of Piezoelectric Actuators Using ExHAM2022

    • Author(s)
      Nozomu Kogiso, Hiroaki Tanaka, Tadashige Ikeda, Kosei Ishimura, Masato Tagawa, Minoru Iwata, Motoharu Fujigaki
    • Organizer
      33rd International Symposium on Space Technology and Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fluence estimation of ionizing radiation in space environments for material degradation2022

    • Author(s)
      Minoru Iwata, Masahito Tagawa, Sumitaka Tachikawa
    • Organizer
      33rd International Symposium on Space Technology and Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Accelerated AO-induced polyimide erosion in VLEO by simultaneous collisions of hyperthermal N2 molecules2021

    • Author(s)
      Sasuga Horimoto, Atsushi Fujita, Wataru Ide, Kumiko Yokota, Masahito Tagawa
    • Organizer
      1st International Symposium on VLEO Missions and Technologies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atmospheric density probe for VLEO applications2021

    • Author(s)
      Taishi Kato, Shoma Taira, Momoka Shimoi, Kumiko Yokota, Yoshinori Nakayama, Takashi Ozawa, Masahito Tagawa
    • Organizer
      1st International Symposium on VLEO Missions and Technologies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Molecular scattering at microstructured surface for rarefied gas compression inside air breathing ion engine2021

    • Author(s)
      Kosuke Shoda, Naoki Kano, Yuki Jotaki, Keisuke Ezaki, Kazuki Itatani, Takashi Ozawa, Yusuke Yamashita, Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
    • Organizer
      1st International Symposium on VLEO Missions and Technologies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] VLEO-related research activities at Kobe University2021

    • Author(s)
      Masahito Tagawa, Wataru Ide, Naoki Kano, Momoka Shimoi, Yuki Fukami, Kosuke Shoda, Taishi Kato, Kazuki Itatani, Atsushi Fujita, Sasuga Horimoto, Keisuke Ezaki, Shoma Taira, Yuki Jotaki, Kumiko Yokota
    • Organizer
      1st International Symposium on VLEO Missions and Technologies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] AO density variations during geomagnetic anomaly observed by SLATS2021

    • Author(s)
      Atsushi Fujita, Kumiko Yokota, Masahito Tagawa, Wataru Ide, Sasuga Horimoto, Yugo Kimoto, Yuta Tsuchiya, Aki Goto, Kazuki Yukumatsu, Eiji Miyazaki, Yasunobu Miyoshi
    • Organizer
      2nd Applied Space Environments Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of direct atomic oxygen exposures on carbon nanotube field emission cathode: comparison of flight data and in-situ ground-based experiment2021

    • Author(s)
      Kazuki Itatani, Keisuke Ezaki, Fukami Yuki, Kumiko Yokota, Masahito Tagawa, Yasushi Ohkawa, Satomi Kawamoto
    • Organizer
      2nd Applied Space Environments Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] AO照射におけるウルシDLC膜のEELS分析2020

    • Author(s)
      梶本武志、畑俊充、田川雅人、小嶋浩嗣、押田京一
    • Organizer
      第18回木質炭化学会研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] 低地球軌道宇宙環境下で活用するためのリグニン炭の空隙構造解析2020

    • Author(s)
      畑 俊充、飛松裕基、本間千晶、梶本武志、押田京一、田川雅人、小嶋浩嗣
    • Organizer
      第18回木質炭化学会研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] 超低地球軌道における高層大気密度計測装置II2020

    • Author(s)
      下位百香、加納直起、加藤大志、平 翔馬、山下裕介、小澤宇志、今村俊介、横田久美子、田川雅人
    • Organizer
      第17回宇宙環境シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] SLATS/AOFSデータを用いたポリイミドの超低地球軌道における材料劣化メカニズム解析2020

    • Author(s)
      井出 航、藤田敦史、堀本流石、土屋佑太、後藤亜希、行松和輝、宮崎英治、木本雄吾、横田久美子、田川雅人
    • Organizer
      第17回宇宙環境シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] AO照射によるカーボンナノチューブ電子放出源への影響in-situ評価に向けて2020

    • Author(s)
      深見侑希、板谷一輝、江崎啓介、大川恭志、河本聡美、横田久美子、田川雅人
    • Organizer
      第17回宇宙環境シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 導電性テザーの軌道上残存リスク低減に向けて ~AO照射によるCNT撚糸の低強度化の初期検討~2020

    • Author(s)
      板谷一輝、深見侑希、江崎啓介、大川恭志、河本聡美、矢野史章、横田久美子、田川雅人
    • Organizer
      第17回宇宙環境シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 超低軌道宇宙環境における高分子材料の劣化特性とSLATSデータとの比較検討(III)2020

    • Author(s)
      井出 航、藤田敦史、堀本流石、土屋佑太、後藤亜希、行松和輝、宮崎英治、木本雄吾、横田久美子、田川雅人
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 神戸大学レーザーデトネーション型原子状酸素照射装置の特性2020

    • Author(s)
      深見侑希、板谷一輝、江崎啓介、岩田 稔、横田久美子、田川雅人
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 超低軌道環境における分子密度計測を目的とした衛星搭載用圧力計測デバイス(II)2020

    • Author(s)
      下位百香、加納直起、加藤大志、平 翔馬、山下裕介、小澤宇志、今村俊介、横田久美子、田川雅人
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 大気吸入イオンエンジン内の大気圧縮特性と材料表面の適応係数に関する考察2020

    • Author(s)
      加納直起、庄田光佑、上瀧優希、小澤宇志、山下裕介、西山和孝、横田久美子、田川雅人
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] SLATS/AOFSデータを用いた磁気嵐発生時の超低地球軌道上原子状酸素密度解析2020

    • Author(s)
      藤田敦史、井出 航、堀本流石、土屋佑太、後藤亜希、行松和輝、宮崎英治、木本雄吾、三好勉信、 横田久美子、田川雅人
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 大気吸入インテーク性能評価に向けた地上試験に関する考察2020

    • Author(s)
      小澤宇志、田川雅人、横田久美子、今村俊介
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 超低地球軌道環境における宇宙機熱制御材の材料劣化メカニズム解析2020

    • Author(s)
      井出 航、藤田敦史、堀本流石、土屋佑太、後藤亜希、行松和輝、宮崎英治、木本雄吾、横田久美子、田川雅人
    • Organizer
      第41回日本熱物性シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 低地球軌道における大気数密度の測定方法の検討2020

    • Author(s)
      下位百香、加納直起、加藤大志、平 翔馬、山下裕介、小澤宇志、今村俊介、横田久美子、田川雅人
    • Organizer
      第41回日本熱物性シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 熱制御材の原子状酸素による材料劣化メカニズムと神戸大学宇宙環境模擬試験装置の特性2020

    • Author(s)
      深見侑希、板谷一輝、江崎啓介、岩田 稔、横田久美子、田川雅人
    • Organizer
      第41回日本熱物性シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 大気吸入イオンエンジンにおける高速分子線圧縮シミュレーション2020

    • Author(s)
      庄田光佑、加納直起、上瀧優希、小澤宇志、山下裕介、西山和孝、横田久美子、田川雅人
    • Organizer
      第41回日本熱物性シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 原子状酸素照射によって高分子材料表面に生じる微細形状:照射に伴う突起密度と化学構造の変化2020

    • Author(s)
      後藤亜希、丹司尊、山下真一、田川雅人
    • Organizer
      第63回放射線化学討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 原子状酸素照射におけるフルエンス空間分布の補正2020

    • Author(s)
      後藤亜希、山下真一、田川雅人
    • Organizer
      第63回放射線化学討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 昼間スポラディックE層形成過程の中性大気とプラズマ大気の同時観測による解明2020

    • Author(s)
      斉藤昭則、阿部琢美、石坂圭吾、田川雅人、熊本篤志、斉藤義文、松岡彩子、斉藤亨、西岡未知、細川敬祐、横山竜宏、Huixin Liu
    • Organizer
      第3回観測ロケットシンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 阿部琢美、田川雅人、渡部重十、横田久美子、加藤大志、田中勇人、三宅互2020

    • Author(s)
      阿部琢美、田川雅人、渡部重十、横田久美子、加藤大志、田中勇人、三宅互
    • Organizer
      第3回観測ロケットシンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Atomic Oxygen Exposure Test Capabilities at Kobe University: Its Performance and Limitations2019

    • Author(s)
      Kumiko Yokota, Masahito Tagawa, Jacob I. Kleiman
    • Organizer
      Advanced Space Environmental Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reduced Dissociation of Molecules in Laser-Detonation-Driven Hyperthermal Beams2019

    • Author(s)
      Masahito Tagawa, Ryota Okura, Kumiko Yokota
    • Organizer
      Advanced Space Environmental Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Kapton erosion yields in various flight environments2019

    • Author(s)
      Wataru Ide, Yusuke Fujimoto, Kim K. de Groh, Bruce A. Banks, Yuta Tsuchiya, Kazuki Yukumatsu, Aki Goto, Eiji Miyazaki Yugo Kimoto, Kumiko Yokota, Masahito Tagawa
    • Organizer
      Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th Nano-Satellites Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Direct simulation Monte Carlo evaluation of hyperthermal molecular flow in air breathing ion engine2019

    • Author(s)
      Naoki Kano, Ryo Shirakawa, Momoka Shimoi, Takashi Ozawa, Kazutaka Nishiyama, Kumiko Yokota, Masahito Tagawa
    • Organizer
      Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th Nano-Satellites Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of ionization gauge for in-orbit measurement of molecular density2019

    • Author(s)
      Momoka Shimoi, Ryota Okura, Ryo Shirakawa, Naoki kano, Shunsuke Imamura Takashi Ozawa, Kumiko Yokota, Masahito Tagawa
    • Organizer
      Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th Nano-Satellites Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Particle simulations of ECR plasma generation in air breathing ion engine2019

    • Author(s)
      Ryo Shirakawa, Hideyuki Usui, Yohei Miyake, Masahito Tagawa, Kazutaka Nishiyama
    • Organizer
      Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th Nano-Satellites Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study of rarefied aerodynamics for super low altitude satellites2019

    • Author(s)
      Takashi Ozawa, Shunsuke Imamura, Masahito Tagawa, Kazuhisa Fujita
    • Organizer
      Joint Symposium of 32nd International Symposium on Space Technology and Science and 9th Nano-Satellites Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] K. Yokota, R. Shirakawa, M. Shimoi, W. Ide, N. Kano, M. Tagawa2019

    • Author(s)
      Effect of collision energy on oxidation of Si atoms embedded in polyimide by simulated low Earth orbit space environment
    • Organizer
      18th European Conference on Applications of Surface and Interface Analysis
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Collision-induced erosion on polyimide in simulated low Earth orbit space environment2019

    • Author(s)
      M. Tagawa, R. Shirakawa, M. Shimoi, W. Ide, N. Kano, K. Yokota
    • Organizer
      18th European Conference on Applications of Surface and Interface Analysis
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Importance of atom-surface scattering on the design criteria of future air breathing ion engine2019

    • Author(s)
      M. Tagawa, K. Yokota, R. Shirakawa, N. Kano, M. Shimoi, F. Ezuka, K. Matsuoka, S. Imamura, K. Nishiyama, T. Ozawa
    • Organizer
      23rd International Workshop on Inelastic Ion-Surface Collisions (IISC-23)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hyperthermal collision-induced erosion of spacecraft polymeric materials in low Earth orbit2019

    • Author(s)
      Yokota, R. Shirakawa, W. Ide, Y. Fukami, M. Tagawa
    • Organizer
      23rd International Workshop on Inelastic Ion-Surface Collisions (IISC-23)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ExHAMを用いた宇宙環境曝露実験に向けたピエゾ素子評価2019

    • Author(s)
      田中宏明,小木曽望,田川雅人,岩田稔,藤垣元治,後藤 優太,池田忠繁,石村康生
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] ExHAMを用いたピエゾ素子曝露実験装置の開発2019

    • Author(s)
      小木曽望,田中宏明,池田忠繁,石村康生,田川雅人,岩田稔,藤垣元治,後藤 優太
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 超低軌道宇宙環境における高分子材料の劣化特性とSLATSデータとの比較検討(II)2019

    • Author(s)
      井出航、藤田敦史、土屋佑太、後藤亜希、行松和輝、宮崎英治、木本雄吾、横田久美子、田川雅人
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 神戸大学レーザーデトネーション型原子状酸素発生装置と宇宙用炭素系材料の劣化挙動2019

    • Author(s)
      深見侑希、岩田稔、横田久美子、田川雅人
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Research-status Report
  • [Remarks] 神戸大学大学院工学研究科における宇宙環境研究のページ

    • URL

      http://www.space-environmental-effect.jp/index.html

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report
  • [Remarks] 神戸大学大学院工学研究科における宇宙環境研究のページ

    • URL

      http://www.space-environmental-effect.jp/

    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2024-01-30  

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