The invention provides a thickness-adaptive flexible thermal protection system and a preparation method thereof. The flexible thermal protection system comprises a high-temperature-resistant fiber flexible surface layer, a high-temperature-resistant metal foil radiation shielding layer, a fluffy high-temperature fiber cotton heat insulation deformation reserve functional layer and a low-permeability elastic deformation material layer which are sequentially stacked from top to bottom. Two to three adjacent layers of the high-temperature-resistant fiber flexible surface layer, the high-temperature-resistant metal foil radiation shielding layer, the fluffy high-temperature fiber cotton heat-insulation deformation reserve functional layer and the low-permeability elastic deformation material layer are sewn by high-temperature fiber sewing lines for multiple times to form an integral structure; the overall structure is compressed to the deformation amount storage position and integrally sewn through a characteristic temperature failure suture line, and the characteristic temperature failure suture line is broken at the preset temperature to release deformation storage of the overall structure. The flexible thermal protection system can automatically release reserve deformation at the preset temperature, and the high-temperature adaptability of the flexible thermal protection system of the aerospace high-speed aircraft is improved.
本发明提供了一种厚度自适应柔性热防护系统及其制备方法。本发明的柔性热防护系统包括自上至下依次层叠设置的耐高温纤维柔性表层、耐高温金属箔辐射屏蔽层、蓬松高温纤维棉隔热变形储备功能层和低渗透弹性变形材料层,耐高温纤维柔性表层、耐高温金属箔辐射屏蔽层、蓬松高温纤维棉隔热变形储备功能层和低渗透弹性变形材料层中相邻的2‑3层通过高温纤维缝合线多次缝合为整体结构,整体结构压缩至储备变形量位置并通过特征温度失效缝合线整体缝合,特征温度失效缝合线在预设温度下断裂以释放整体结构的变形储备。本发明的柔性热防护系统能够在预设温度下自动释放储备变形,提升了航空航天高速飞行器柔性热防护系统的高温适应性。
Thickness-adaptive flexible thermal protection system and preparation method thereof
一种厚度自适应柔性热防护系统及其制备方法
29.03.2024
Patent
Elektronische Ressource
Chinesisch
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