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文章基于近地轨道及探月返回再入热环境,应用超高温陶瓷到再入航天器的典型防热结构,计算分析了再入过程中的防热结构温度场。利用温度场计算结果,再结合超高温陶瓷抗烧蚀性能以及结构设计与工艺性分析,就超高温陶瓷作为再入航天器防热结构的适用性进行了深入探讨。结果表明,由于超高温陶瓷的优良耐高温及耐烧蚀性能,在近地轨道及探月返回再入航天器防热结构上具有良好的应用前景。
Based on the near-Earth orbit and lunar return-to-reheat environment, the article uses the typical heat-resistant structure of ultra-high temperature ceramic to reentry spacecraft, and calculates and analyzes the temperature field of heat-resistant structure during reentry. Based on the calculation results of the temperature field, combined with the anti-ablation performance of the ultra-high temperature ceramic and the structural design and process analysis, the applicability of the ultra-high temperature ceramic as the heat-resisting structure of the reentry spacecraft is discussed in depth. The results show that due to the excellent high temperature resistance and ablation resistance of the ultra-high temperature ceramic, it has a good application prospect in the thermal structure of the near-Earth orbit and lunar return-to-return spacecraft.