Coking characteristics of low density ablators
| Project/Area Number |
19760564
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Aerospace engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
TAKEHARU Sakai Nagoya University, 大学院・工学研究科, 准教授 (90323047)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥3,790,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | アブレーション / コーキング / 空力加熱 / 炭素繊維強化断熱複合材料 / 気体透過率 / 炭素繊維断熱複合材料 / レーザー / 高温 / 多相 / 軽量アブレータ / 複雑 / 極限状態 |
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| Research Abstract |
Coking phenomenon in low density carbon phenolic ablative material exposed to aerodynamic heating is examined experimentally. The in-depth density and gas permeability of the material heated in an arcjet wind tunnel is measured. Toward the surface within the char layer, the density increases and the gas permeability decreases respectively. The reason for such a trend is likely due to coking effect: coking in the char layer is known as a phenomenon that when the pyrolysis gas passes through the porous char layer to the surface, solid carbon is deposited within the char layer under the chemical decomposition reaction of hydrocarbon species such as CH4.It is find in this study that coking could occur in a low density carbon-phenolic ablator.
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Report
(4 results)
Research Products
(19 results)
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[Presentation] 軽量アブレータの熱応答特性2008
Author(s)
小林祐介, 酒井武治, (他6名)
Organizer
平成20年度宇宙航行の力学シンポジウム
Place of Presentation
JAXA宇宙科学研究本部, 神奈川県相模原市
Year and Date
2008-12-04
Related Report
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