In order to verify the design and analyze the characteristics of pulse thruster with high combustion chamber pressure

the cold test was carried out.Using O-ring as a dynamic seal of the moving injector

the channels enabled the propellants to flow from manifold cavities to extrusion cavities

and few propellants were recirculated.The sealing result of O-rings was tested

and the friction force was measured.According to test results

the sealing result is good

and the friction force accords with the design requirement.In the cold test

the thruster can work at pulsating state

and the moving injector can increase the pressure of propellants in extrusion cavities.