小功率电弧等离子体发动机试验及性能分析

电弧等离子体发动机（Arcjet）因其高比冲、高推力／功率比等特点成为当前国际上电火箭研究和应用的热点。介绍了小功率Arcjet实验研究系统的主要组成，分析了实验方案，对4种不同结构尺寸的发动机进行了性能实验，给出初步的工作性能参数及实验结果分析，实验结果表明小喷管喉和戏及氮作为推进剂的发动机性能较好。所得结论对小功率Arcjet发动机的优化设计具有参考价值。

Experiment and performance analyse on low power arcjet

Arcjet is the highlight of investigation and application in world because of its high specific impulse, high ratio of thrust and power. This paper introduces primary constitution of experiment system on low power Arcjet and analyzes experiment projects. Four types of thruster were employed to present performance test, primary operation performance parameters and experiment results analysis are presented. The tests results show that thruster performance is better at small constrictor diameter and nitrogen as propellant. The conclusions obtained in this paper provide a reference for the optimization design of low power Arcjet thruster.