为了减小横流对水下发射导弹的影响,改善导弹的水中受力环境,采用筒口气幕技术。为了获得筒口气幕的保护区域,通过理论与试验相结合总结出了计算气幕保护上下边界的工程计算方法。利用该方法进行气幕上下边界计算获得的结果与实验数据获得结果较为一直,表明该方法可以用于指导水下发射气幕保护系统的设计。

The outlet of tube gas screen protection technology was installed on the submarine platform to reduce effect of crosscurrent to underwater launch of missiles, this protection improve missiles mechanical environment underwater. In order to get the exact region of gas protection screen outside the tube, engineering calculation method to calculate the the upper and lower boundaries of protection system on the tube was obtained by theory and experiment analyze. The method was used to calculate upper and lower boundaries of the gas screen, the result agree well with the test result, so this method can direct the design of gas screen protection system.