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固体火箭发动机喷射物中的熔渣是航天器防护和空间碎片风险评估关注的对象之一。文章首先介绍国外熔渣建模试验数据及理论模型,主要有NASA熔渣模型、MASTER2005熔渣子模型(以下简称MASTER模型)和麻省理工大学林肯实验室的MIT/LL熔渣模型;再利用NASA和MASTER模型分析熔渣尺寸-数量和质量特性。MASTER模型给出的熔渣数量和质量均低于NASA模型;且MASTER模型认为约91.8%的熔渣尺寸处于25～200 m区间;尺寸大于250 m的熔渣质量占熔渣总质量的88%,但其数量只占熔渣总数量的6.3%。以上研究结果为进一步分析熔渣对空间碎片环境的影响奠定了基础,对我国自主开展熔渣模型研究也有一定的参考价值。
Slag in solid rocket motor jets is one of the objects of concern for the spacecraft shielding and space debris risk assessment. In this paper, the experimental data and theoretical models of slag modeling in foreign countries are introduced firstly, including NASA slag model, MASTER2005 slag model (hereinafter referred to as MASTER model) and MIT / LL slag model of MIT Lincoln Laboratory. And MASTER model analysis slag size - quantity and quality characteristics. The MASTER model shows that the amount and quality of the slag is lower than that of the NASA model. The MASTER model thinks that about 91.8% of the slag size is in the range of 25 ~ 200 m. The mass of slag with the size of more than 250 m accounts for 88% , But its amount accounted for only 6.3% of the total amount of slag. The above results provide a basis for further analysis of the impact of slag on the environment of space debris, and have some reference value for our country to carry out research on slag model independently.