低功率氮气电弧加热推力器稳定性的实验研究

Experimental Study on Stability of Low Power Nitrogen Arcjet

电弧加热推力器的稳定性是关系到推力器可靠性和寿命的关键问题。在分析影响稳定性的各种因素基础上,对传统低功率氮气电弧加热推力器进行性能测试,并总结了影响推力器稳定工作参数的原因,通过改进推力器的阳极结构,人为地将阳极弧点位置约束在扩张段,在工作稳定性和烧蚀方面获得了明显改善。

The stability of arcjet is the key relating to reliability and lifetime of thruster.On basis of analyzing the factor influencing on the stability of arcjet,the performance and stability rule for conventional low power nitrogen arcjet were acquired.According to reason of effect on stability,changes were made toward the anode structure,which pushes the arc anode attachment to the divergent section of the nozzle.The stability and ablation of new arcjet are improved.