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本文介绍了添加剂甲基硅酮降低硝基氧化剂-偏二甲基肼(UDMH)发动机热流强的研究情况和试验结果。论述了降低热流强与提高液体火箭发动机性能之间的关系。叙述了添加剂——甲基硅酮的性质和用添加剂降低推力室热流强的机理。分析试验结果指出:添加剂甲基硅酮(SiOC_2H_6)_n的粘度在20℃下应低于13厘斯;UDMH中添加1重量％硅酮后,推进剂使用性质略有改善,推力室总热流下降约33％。
This paper introduces the research situation and experimental results of the additive methyl silicone to reduce the heat flux of the nitroxide-monodimethylhydrazine (UDMH) engine. The relationship between reducing the heat flux and improving the performance of a liquid rocket motor is discussed. The properties of the additive, methyl silicone, and the mechanism of reducing the heat flux in the thrust chamber with additives were described. The results of the analysis indicate that the viscosity of SiOC_2H_6 additive should be less than 13 cSt at 20 ° C. The addition of 1% by weight of silicone to UDMH results in a slight improvement in the propellant properties and a decrease in the total heat flux in the thrust chamber About 33%.