Analysis and optimization on ejection performance of high-pressure pneumatics system
According to the operating principle and characteristics of high-pressure pneumatics ejection system,three kinds of ejection devices are given,including ejection system standalone,ejection system with cushion chamber and ejection system with high-speed on-off valve.Interior ballistics model is established using aerodynamics theory and segmentation modeling method.On the basis,different parameters on leaving velocity and max-overload are calculated and analyzed.The simulation results show that,ejection system with cushion chamber and ejection system with high-speed on-off valve can both effectively reduce max-overload and increase leaving velocity.The best scheme is the one with high-speed on-off valve.The research production can guide the optimum design,manufacturing and experiment of high-pressure pneumatics ejection system.
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