新型一体化热防护系统热力分析与试验研究

doi:10.7527/S1000-6893.2013.0124

Abstract

Abstract:

The demanding requirements of high-speed aircraft for structural efficiency lead to their thermal protection system to be lightweight and integrated. The new thermal-mechanical coupling integrated thermal protection system (ITPS) has great potential for development. Firstly, the concept and characteristics of a new integrated thermal protection structure design are explained and the basic design criteria are summarized. Numerical analysis is completed to study the impact of structural parameters on temperature response and the critical buckling load. The results show that web thickness has the greatest impact on the bottom temperature as well as the critical buckling load. ITPS panels and unit-cell test samples are designed and then manufactured in order to conduct insulation performance test at 800 ℃ and buckling performance mechanical tests. The experiments show that web structure is the key factor causing the thermal short circuit effect and buckling. The results of the buckling tests are consistent with finite element analysis, and high-temperature buckling analysis shows that the temperature gradient has great impact on the buckling form.

Key words: thermal protection system, thermal-mechanical structure coupling, integrated design, buckling, insulation performance

CLC Number:

V414.9

XIE Weihua, HUO Shiyu, YANG Qiang, DU Chong, MENG Songhe, HAN Jiecai. Thermal-mechanical Analysis and Test Study of a New Integrated Thermal Protection System[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(9): 2169-2176.

References

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Thermal-mechanical Analysis and Test Study of a New Integrated Thermal Protection System

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