一种耐高温多层热防护组件结构设计与性能研究

研究了由多种功能层材料组成的热防护组件的结构设计方法与热防护性能.利用仿真计算模拟了高温热环境下由不同厚度的面板层材料与隔热层材料组成的热防护组件的热响应行为，并通过石英灯加热考核验证了优化设计的热防护组件的耐温隔热与可重复使用性能.结果表明，致密的面板层材料具有优异的耐温性能，而由气凝胶组成的隔热层材料具有极低的热导率.根据目标环境匹配设计两种功能层材料厚度，可使多层热防护组件具备经最高温度1 600℃的加热考核后，背温仅为118℃的优异耐温隔热性能. 

Structure Design and Performance Study of a Multi-Layer Thermal Protection Component with High Temperature Endurance

The structure design method and thermal protection performance of a multi-layer thermal protection component composed of different functional layers were investigated. A simulation calculation was applied to simulate the thermo-responsive behavior of the component composed of ablator layer and insulation layer materials with different thicknesses. And a quartz lamp heating test was carried out to verify the thermostable performance, insulation ability and reusable property of the optimized component. The results show that, the compact ablator layer material possesses an excellent thermostable performance and the insulation layer material composed of aerogel has an ultra-low thermal conductivity. The multi-layer component, matching the designed thicknesses for the target environment, can go through an 1 600℃ heating test with a low back-side temperature of only 118℃.