Combustion Study of Power Cartridge in Closed and Semi-Closed Vessel for Water Disruptor Application

Abstract The present study deals with combustion study for comparison of power cartridge in closed (CV) and semi-closed vessel (SCV) for water disruptor application using statistical methods. The cartridges are fired in the test vessels such as CV and SCV. CV is perfectly leak proof from all sides. SCV is provided with vent 5 mm diameter keeping the same volume as that of CV. To evaluate the comparative internal ballistic performances, the firings of cartridges are carried out in CV and SCV. The gas pressure generated by the power cartridges are measured using the pressure transducer fitted over the body. It is vital task to understand the effect of vent on maximum pressure inside a test vessel. The motivation behind this experiment is to assess the maximum pressure developed and respective time inside SCV to simulate the motion of projectile to some extent through barrel. The internal ballistic parameters are evaluated in CV and SCV. The percentage drop in pressure and time are calculated. From this study, it is inferred that pressure drop in SCV is 16 percentage to that of CV. Further, an experiment revealed that pressure drop in CV is 1.2 times of SCV.