2022 Fiscal Year Final Research Report
Development of a Highly Accurate and Reliable Radiation Heating Prediction Method Verified by a Light Gas Gun in the Flight-Equivalent Environments
| Project/Area Number |
20H02361
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 24010:Aerospace engineering-related
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| Research Institution | Japan Aerospace EXploration Agency |
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Principal Investigator |
Fujita Kazuhisa 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (90281584)
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| Co-Investigator(Kenkyū-buntansha) |
野村 哲史 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主任研究開発員 (80709361)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 火星探査 / 大気突入システム / 実在気体効果 / 輻射加熱 / 非平衡 |
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| Outline of Final Research Achievements |
By modifying the light gas gun and devising the operating conditions, we have established a technique to reproduce an environment equivalent to a typical Martian atmospheric entry environment around a projectile that simulates a Martian atmospheric entry system for future Martian landing missions. We also succeeded in developing a visualization system that identifies the position and attitude of the model with higher accuracy than before by improving the model visualization system developed previously. In addition, we developed a matrix spectroscopy system that can measure and spectroscopy the distribution of luminescence around the model, and succeeded in developing a system that acquires and spectroscopy the luminescence from the hot gas around the model and from the model itself by synchronizing with the visualization system. This has paved the way for the development of a technique to measure the heating rate of the radiation to the entry vehicle by ground-based experiments.
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| Free Research Field |
大気突入システム
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は、世界で初めて火星大気突入環境と等価環境を地上に再現し、これを用いて世界で初めて実在気体空力係数を実測し輻射分布計測を行った、という点において、高い学術的意義を有する。欧米においては、高い費用をかけて火星ミッションを行い、飛行データを取得することによって、実在気体空力係数や輻射加熱に係る情報を得ているが、これらは機会が限られている上に費用対効果が著しく低い。本研究によって、火星大気突入環境と等価環境を地上に再現し、これを飛行試験として計測を行うことによって、費用対効果が極めて高い試験環境が地上に実現し、将来の火星大気突入ミッションにおける我が国の優位性が実現されることが期待される。
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