Clarification on nonequilibrium thermochemistry around atmospheric entry vehicles using a ultra-fast imaging absorption spectroscopy
| Project/Area Number |
16K06890
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
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| Research Institution | Tokai University |
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Principal Investigator |
Yamada Gouji 東海大学, 工学部, 講師 (90588831)
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| Co-Investigator(Kenkyū-buntansha) |
川添 博光 鳥取大学, 工学研究科, 教授 (40260591)
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| Project Period (FY) |
2016-10-21 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 分光計測 / 再突入飛行 / 熱化学的非平衡 / 回転温度 / 振動温度 / 衝撃波 / プラズマ流 / Shock Wave / Spectroscopy / Nonequilibrium / Shock tube / Rotational temperature / Vibrational temperature / Shock wave / Rotational tempereture / VIbrational temperature / Spectrum fitting / Relaxation process / Absorption spectroscopy / Electronic state / 惑星大気突入 / 吸収分光 / 非平衡熱化学過程 / 高速プラズマ流 |
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| Outline of Final Research Achievements |
In this study, characteristics of high temperature plasma flows around a space vehicle during entry flight were investigated using a ground testing facility called shock tube. Since high temperature plasma flows generated around a space vehicle emit strong radiation, emission spectroscopy has been conventionally applied to clarify characteristics of the flows. Information obtained by emission spectroscopy is limited. So, in this study, experimental investigation using absorption spectroscopy has been newly tried.
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| Academic Significance and Societal Importance of the Research Achievements |
従来は、プラズマ流からの自発光計測より得られた情報により流れ場の特性が把握されてきた。しかしながら本手法では流れ場の断片的な情報しか把握できずに、宇宙機の熱空力特性の予測精度の不確かさが大きいという問題があった。これに対して本研究では、従来と異なる手法のアプローチにより流れ場の特性を調査するものであり、高温プラズマ流の物理的な解明や将来の高精度な宇宙機開発に貢献できると考えられる。
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Report
(4 results)
Research Products
(8 results)
