Properties of Composite Solid Propellants Containing α‐FeOOH,Propellants, Explosives, Pyrotechnics

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Properties of Composite Solid Propellants Containing α‐FeOOH
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2020-11-19 , DOI: 10.1002/prep.202000125
Sungjun J. Park ₁ , Sunghan H. Choi ₁ , Jungho H. Park ₁

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The initial viscosities of propellants based on yellow iron oxide and red iron oxide were similar. Furthermore, it was confirmed that the thermal decomposition rate of the material to which yellow iron oxide was added was higher than that of the material to which red iron oxide was added; in particular, the pressure index at high pressure was low. From analyzing the combustion properties of the actual test motor, it was concluded that erosion and combustion mainly occur in the initial stage of operation of the rocket motor, and are mitigated due to the low initial pressure in the propellant containing yellow iron oxide. The mechanical properties of the propellant with yellow iron oxide were slightly better compared to those of the propellants with red iron oxide. The analysis revealed that the crystallinity, volatility, thermal decomposition, and mechanical properties of yellow iron oxide were unchanged with natural aging for 10 years. Thus, yellow iron oxide can exhibit the same performance even after prolonged aging for 10 years when applied in a rocket motor.

中文翻译：

含α-FeOOH的复合固体推进剂的性能

基于黄色氧化铁和红色氧化铁的推进剂的初始粘度相似。另外，可以确认，添加了黄色氧化铁的材料的热分解率比添加了红色氧化铁的材料的热分解率高。特别是高压下的压力指数低。通过分析实际测试发动机的燃烧特性，可以得出结论，腐蚀和燃烧主要发生在火箭发动机运行的初始阶段，并且由于含黄色氧化铁的推进剂的初始压力低而得到缓解。带有黄色氧化铁的推进剂的机械性能比带有红色氧化铁的推进剂的机械性能稍好。分析表明，结晶度，挥发性，热分解，自然老化10年后，黄色氧化铁的力学性能没有变化。因此，当将黄色氧化铁应用于火箭发动机时，即使长时间老化10年也可以表现出相同的性能。

更新日期：2021-01-11

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