| Project/Area Number |
05555258
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Aerospace engineering
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
NIIOKA Takashi Tohoku University, Institute of Fluid Science, Professor, 流体科学研究所, 教授 (90208108)
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| Co-Investigator(Kenkyū-buntansha) |
ADACHI Shigeru Nihon Fine Ceramics Co.Ltd., Chief Clerk of Development Division, 係長
SHIBUYA Kikuo Nihon Fine Ceramics Co.Ltd., Deputy Director of Development Division, 次長
MITANI Tohru National Aerospace Laboratoty, Section Head of Ramjet Combustion Laboratory, 研究室長
CHINZEI Nobuo National Aerospace Laboratory, Section Head of Ramjet Performance Laboratory, 研究室長
KOBAYASHI Hideaki Tohoku University, Institute of Fluid Science, Associate Professor, 流体科学研究所, 助教授 (30170343)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1994: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1993: ¥3,200,000 (Direct Cost: ¥3,200,000)
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| Keywords | scramjet / supersonic combustion / ceramics / strut / combustion control / flame holding / 乱流燃焼 / 保炎器 / 可変機構 / 消炎 / 水素燃焼 / 耐熱性能 |
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| Research Abstract |
A newly devised strut made on an experimental bais was proposed for the ramjet or scramjet engine and its combustion experiments were carried out in supersonic airflow of Mach number 1.5. This strut model is composed of two parts divided streamwise and a part of the strut can be changed, for example, in response to airflow condition. Therefore, it is expected that the flame-holdindg is always possible in any condition of fuel and air. The intervening space between two parts of this controllable strut can be changed up to 60 mm and also the moving speed of the rear strut can be variable. It was found that the flame-holding characteristics were improved, but that they depended on the moving speed beacause of its unstesdiness of the flow. The strut was made of ceramics, whose machinability was so good, and had no problem even after many times of ten-second experiment.
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