Interaction features of different propellants under plasma impingement
Interaction features of different propellants under plasma impingement
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DOI：
10.1063/1.4752887
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发表时间：
2012-09
影响因子：
3.2
通讯作者：
Xingwen Li;Rui Li;S. Jia;Yucheng Zhang
中科院分区：
文献类型：
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作者：
Xingwen Li;Rui Li;S. Jia;Yucheng Zhang
电热化学发射技术的发展和高能热塑性弹性体(ETPE)推进剂的有效点火都要求深入了解等离子体推进剂的相互作用机理。因此，在本工作中，开发了一个数值模型来研究这一过程。在该模型中，特别关注了由等离子体烧蚀引起的推进剂表面的退化，并假定它对相互作用过程有相当大的影响。利用该模型对包括两种ETPE推进剂在内的四种推进剂的相互作用特性进行了实验研究，得到了用于该模型的等离子体参数。得到了不同推进剂在等离子体撞击下的表面温度、烧蚀速率和表面退化率。最后，分析了推进剂组成和充电电压的影响。
The development of electrothermal chemical launch technology and the effective ignition of energetic thermoplastic elastomer (ETPE) propellants all call for a thorough understanding of the plasma propellant interaction mechanism. Therefore in this work, a numerical model is developed to study this process. In this model, special attention is paid to deal with the regression of propellant surface, which is caused by plasma ablation, and is assumed to have considerable influence on the interaction process. By this model, interaction features of four propellants, including two ETPE propellants are studied with the aid of experiments, which are carried out to obtain plasma parameters utilized in the model. Surface temperature, ablation rate, and surface regression rate are obtained for different propellants under plasma impingement. Finally, the influence of propellant composition and charging voltage are analyzed.