UNDERSTANDING INTERIOR BALLISTIC PROCESSES IN A FLASH TUBE
Vented flash tubes have often been used in the ignition train of medium and large caliber weapon systems. Despite their long history of ballistic usage, there are undesirable features associated with uneven venting of the combustion products. Measured pressure profiles in the flash tube show severe variations with time and counterintuitive, nonmonotonic pressure profiles with the lowest pressure in the middle of the venting section. A model of the flash tube was developed to explain these phenomena. The numerical results of this model demonstrated the severe pressure variations and non-monotonic pressure profiles observed in experiments. In general, these variations are caused by gas dynamic effects stemming from a slowly moving shock wave situated in the middle portion of the flash tube. The physical understanding gained from this model has provided guidance for achieving more uniform mass discharge by varying the vent-hole sizes along the flash tube.
Ryan W. Houim Kenneth K. Kuo
The Pennsylvania State University, Department of Mechanical and Nuclear Engineering, 139 Research Bu The Pennsylvania State University, Department of Mechanical and Nuclear Engineering, 140 Research Bu
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
11-15
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）