| 尖化前缘高导热材料防热分析 |
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| 引用本文： | 孙健,刘伟强.尖化前缘高导热材料防热分析[J].航空学报,2011,32(9):1622-1628. |
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| 作者姓名： | 孙健 刘伟强 |
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| 作者单位： | 国防科学技术大学航天与材料工程学院,湖南长沙,410073 |
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| 基金项目： | 国家自然科学基金(90916018); 高等学校博士学科点专项科研基金(200899980006)~~ |
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| 摘 要： | 针对飞行器高超声速飞行时严重的气动加热环境,提出疏导式热防护结构( TPS),为飞行器前缘提供热防护.采用有限元法和有限体积法,分别对在特定工况下飞行的尖化前缘固体域和流体域进行计算,验证了前缘内嵌高导热材料的防热效果,其中来流马赫数为6.5时,头部壁面最高温度下降了13.6％,尾部最低温度升高了16.7％,实现了热流...
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| 关 键 词： | 疏导式热防护 气动热 前缘 高导热材料 耐热材料 |
| 收稿时间： | 2010-11-25; |
Analysis of Sharp Leading-edge Thermal Protection of High Thermal Conductivity Materials |
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| SUN Jian,LIU Weiqiang.Analysis of Sharp Leading-edge Thermal Protection of High Thermal Conductivity Materials[J].Acta Aeronautica et Astronautica Sinica,2011,32(9):1622-1628. |
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| Authors: | SUN Jian LIU Weiqiang |
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| Institution: | SUN Jian,LIU Weiqiang*College of Aerospace and Material Engineering,National University of Defense Technology,Changsha 410073,China |
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| Abstract: | The structure of leading thermal protection is considered as thermal protection system(TPS) to prevent hypersonic vehicle from the serious aerodynamic heating.By the use of finite element method and finite volume method,we calculate the solid domain and fluid domain of sharp leading-edge which is flying under given conditions.And it is proved that high thermal conductivity materials which are embedded in the leading-edge have an effect on thermal protection.The maximum temperature of the head decreases by 1... |
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| Keywords: | leading thermal protection aerodynamic heating leading-edge high thermal conductivity materials heat-resistant materials |
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