平面感应式脉冲等离子体推力器高速脉冲气体供给阀的试验验证

摘要： 本文针对国防科技大学的平面感应脉冲等离子体推力器（IPPT）原型机，设计了一种基于感应涡流斥力原理的快速脉冲气体供给阀.该阀采用截锥型铍青铜簧片作为执行构件，依靠簧片开启过程中弹性变形产生的弹力提供闭合所需回复力，避免了使用额外的回复力机构,使阀整体结构得到极大简化.性能测试结果表明，该阀的动作延迟时间小于35 μs.在阀腔气体压力为100 kPa时，最大单脉冲供气量为2.5 mg.响应特性和供气量特性均满足目前IPPT原型机的需求.此外，该阀可通过调节初始充电电压和阀腔气体压力实现供气量调节.该阀可以为后续推力器原型机多工况性能试验提供有力支持.

Experiment Validation of a Novel Fast Pulsed Gas Valve for Inductive Pulsed Plasma Thruster

Abstract： A prototype inductive pulsed plasma thruster (IPPT) has been developed in the National University of Defense Technology. In order to support the thruster experimental research, a novel fast pulsed gas valve based on eddy current repulsion mechanism is designed and tested in this paper. A new and important design feature is the use of a conical diaphragm as the action part, which greatly contributes to the virtue of simplicity for adopting the resultant force of the diaphragm deformation as the closing force. Experiments are performed over a range of capacitor charge voltages and working gas pressures, and the results reveal that the delay before the valve action is less than 35 μs. The throughput of the valve, which has an upper limit of 2.5 mg argon with a fixed gas pressure of 100 kPa, can be easily regulated by adjusting the charge voltage and the gas pressure. The valve will become a useful tool to facilitate the IPPT research.