Abstract:At present, pneumatic ejection is gradually used in kinds of air combat weapon systems. A high press pneumatic ejection mathematical model was established, and the influence of component parameters on the pneumatic ejection performance was analyzed. The influence on high press pneumatic ejection velocity by component parameters, such as the cylinder volume, the gas pressure, the diameter and the distance of the gas actuation, the diameter of gas pipeline, the diameter and the response time of the solenoid valve, was obtained through simulation analysis. The design principles of component parameters in the high pressure pneumatic ejection were presented, which provided reference for the design and optimization of high pressure pneumatic ejection system.