HYPERGOLIC REACTION MECHANISMS OF CATALYTICALLY PROMOTED FUELS WITH ROCKET GRADE HYDROGEN PEROXIDE
HYPERGOLIC REACTION MECHANISMS OF CATALYTICALLY PROMOTED FUELS WITH ROCKET GRADE HYDROGEN PEROXIDE
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DOI：
10.1080/00102200701386149
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发表时间：
2007-09
影响因子：
1.9
通讯作者：
T. Pourpoint;W. Anderson
中科院分区：
文献类型：
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作者：
T. Pourpoint;W. Anderson
控制自燃推进剂点火延迟（τ ign）的物理和化学过程的耦合使得对瞬态点火过程的直接分析变得复杂。推进剂和周围气体的输运性质、汽化热和反应热都影响τ ign，必须在实验中加以考虑。此外，根据定义，自燃着火是在接触时发生的，因此初始接触和随后的混合力学会影响τ ign，也必须加以考虑。本文介绍了用火箭级过氧化氢（RGHP）催化促进燃料自燃的实验结果。对实验数据进行统计分析，评价RGHP浓度、初始环境压力和环境气体对τ ign的相对影响。当RGHP在水中的浓度小于92%时，很难实现稳定点火。在足够高的路易斯数下，观察到振荡点火过程。提出了一个包括混合、RGHP分解、燃料加热汽化和自燃在内的现象模型，并与实验结果进行了比较。
Abstract The coupling of the physical and chemical processes controlling the ignition delays (τ ign ) of hypergolic propellants complicates the direct analysis of the transient ignition processes. The transport properties of both the propellants and the ambient gas, and the heat of vaporization and reaction affect τ ign and must be considered experimentally. Furthermore, since hypergolic ignition occurs, by definition, on contact, the mechanics of initial contact and subsequent mixing can affect τ ign and must also be considered. Experimental results from a study of the hypergolic ignition of a catalytically promoted fuel with rocket grade hydrogen peroxide (RGHP) are presented. Statistical analysis of the experimental data was conducted to evaluate the relative effects of RGHP concentration, initial ambient pressure, and the ambient gas on τ ign . At RGHP concentrations of less than 92% in water, stable ignition was difficult to achieve. At sufficiently high Lewis number, an oscillatory ignition process is observed. A phenomenological model comprising mixing, RGHP decomposition, fuel heating and vaporization, and auto-ignition is presented and compared to the experimental results.