为了检验高室压脉冲推力器的设计并了解其工作特性,进行了冷流实验.可移动喷注器的动态密封采用O型圈结构,推进剂的流动通道既能保证充填时推进剂的流通,又能保证挤压时不会有回流.实验表明密封效果良好,摩擦力大小符合设计要求,冷流下推力器仍可脉冲工作,可移动喷注器能够实现增压的目的. In order to test the design of high-pressure pulse thrusters and understand its operating characteristics, a cold flow experiment was carried out.The movable seals of movable injectors adopt O-ring structure, and the flow passage of propellant can ensure the flow of propellant during filling , But also ensure that there will be no backflow when squeezed.Experiments show that the sealing effect is good and the frictional force meets the design requirements. The thrusters can still work under the cold flow and the movable injector can achieve the purpose of supercharging.