2005 Fiscal Year Final Research Report Summary
Study on Ceramic Thruster
| Project/Area Number |
14205141
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
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| Research Institution | Japan Aerospace Exploration Agency |
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Principal Investigator |
UESUGI Kuninori Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Professor, 宇宙科学研究本部 宇宙航空システム研究係, 教授 (40013693)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Eiichi Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Associate Professor, 宇宙科学研究本部 宇宙構造・材料工学研究系, 助教授 (40178710)
SAWAI Shujiro Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Associate Professor, 宇宙科学研究本部 宇宙航空システム研究系, 助教授 (30270440)
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| Project Period (FY) |
2002 – 2005
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| Keywords | Ceramics / Thruster / Silicon Nitride / Bi-propellant Propulsion System / RCS |
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| Research Abstract |
Ceramics are one of the most promising materials for the spacecraft on-board thrusters because of their superior performance on heat resistance. However they are brittle, and thus they have not been used in the real flight missions so far. It might be fractured due to mechanical vibration at launch, thermal shock at firing, or by collision of space debris. We have developed a 500N class bipropellant thruster made of Si-based monolithic ceramic. As a first step of the development, the chamber and nozzle of the existing metallic thruster were replaced to ceramics, and have conducted a series of qualification tests including mechanical vibration tests, firing tests and impact test. Test results confirmed its feasibility in accordance with the thermal shock and launch environment.
Momentarily, the design of the injector block is not revised from the conventional version. It means that the improvement of the performance is not expected, because the design of the injector is the key point to decide how the propellant combusts, and how the thruster becomes hot. It implies the possibility of improving the performance by allowing a higher chamber temperature.
So far, this study has concentrated to realize the ceramic based thruster, without concerning the performance. As a result, the authors have successfully developed the ceramic thruster which has similar performance to the conventional ones.
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Research Products
(22 results)
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[Journal Article] Development of Ceramic Thruster,
Author(s)
K.Takita, Y.Nonaka, K.Furukawa, H.Mishima, E.Sato, S.Sawai
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Journal Title
Collected Abstracts of the 2003 Spring Meeting of the Japan Institute of Metals S3-II
Pages: 88
Description
「研究成果報告書概要(欧文)」より
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