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Mechanical properties and durability study of aerogel-base thermal insulation for advanced space suit

机译：用于高级空间套装气凝胶基热绝缘的力学性能及耐久性研究

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Fiber-reinforced aerogel composite insulations provide superior thermal insulation protection in both the low-earth orbit (LEO) and near-earth neighborhood planetary environments. The flexible nature and thermal properties of these materials make them the best insulation candidates for advanced space suit application. This paper reviews the properties of various aerogel composite materials developed for NASA by Aspen Systems, Inc. Previous studies showed that the aerogel materials retained acceptable thermal performance after some amount of mechanical cycling. The goal of the current work is to reach a complete understanding of the mechanical properties of these materials in the domain of space suit application. Hence, a good knowledge of the durability of the aerogel composites is needed. This paper presents the extensive testing program needed to determine the life of these insulations for advanced space suit application. In particular, this test program focuses on evaluating the change of thermal conductivity as a function of the degree of mechanical cycling. The changes in chemical formulation are also evaluated in terms of materials overall thermal and mechanical performance. Initial test results are presented.
机译：纤维增强气凝胶复合绝缘体在低地轨道（LEO）和近地区邻域行星环境中提供了卓越的隔热保护。这些材料的灵活性质和热性能使它们成为先进空间套装应用的最佳绝缘候选者。本文综述了Aspen Systems，Inc的各种气凝胶复合材料的特性通过Aspen Systems，Inc。以前的研究表明，气凝胶材料在一定量的机械循环后保留了可接受的热性能。目前工作的目标是完全了解在空间套装应用领域中这些材料的机械性能。因此，需要良好地了解气凝胶复合材料的耐久性。本文提出了广泛的测试程序，以确定高级空间套装应用的这些绝缘的寿命。特别地，该测试程序专注于评估作为机械循环程度的导热率的变化。还在材料总体热和机械性能方面评估了化学制剂的变化。介绍了初始测试结果。

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