年間 6 号発行
ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678
Indexed in
ASSESSMENT OF THE PERFORMANCE OF ABLATIVE INSULATORS UNDER REALISTIC SOLID ROCKET MOTOR OPERATING CONDITIONS
要約
In order to generate empirical data for use in validating ablation models of internal insulators, a subscale solid rocket motor (SRM) was developed in which flat ablative material samples, one of polybenzimidizole/nitrile butyl rubber and one of carbon fiber/ethylene propylene diene monomer, were located downstream from an aluminized, solid-propellant grain, exposed to an environment nearly identical to that present in a full-scale SRMs. The samples were imaged with real-time X-ray radiography, such that the time-resolved locations of the char surface and the char–virgin material interface were measured and instrumented with micro-thermocouples in order to record their subsurface temperature histories as well. The thermal environment in the subscale SRM was characterized using two custom-designed gauges: one to measure the total wall heat-flux and one to measure the thermal-radiation flux. This combination of in situ diagnostics and realistic SRM conditions provides insight into the internal insulator degradation in SRMs, as well as data for validating ablation models.
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Qu Zhe, Wang Xian, Tang Yunlong, Su Honghong, Chen Lianzhong, Gao He, Feng Xue, In Situ Visualization Measurement of Flat Plate Ablation in High-Temperature Gas Flow, Journal of Applied Mechanics, 85, 6, 2018. Crossref
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Qu Hongjian, Wang Le, Hui Kun, Bian Cheng, Li Hongyan, Guan Yiwen, Luan Tao, Yan Ning, Enhancing Thermal Insulation of EPDM Ablators via Constructing Alternating Planar Architectures, Polymers, 14, 8, 2022. Crossref