Non-Solid Explosives for Shaped Charges.Part II. Target Penetration with Metal Liner Devices Using Sensitized Nitromethane Liquid Explosive

摘要

In an attempt to overcome the inconsistencies of plastic explosive-filled shape charges in EOD operations we have explored the use of sensitized gelled nitromethane liquid as a filling for a number of shaped charge devices. The ability to penetrate munition casings and induce deflagration is not only dependent on the velocity of detonation of the mixture,investigated in previous papers,but also on the geometry of the devices used and in some cases the confinement present in the device. In this article a range of nitromethane-based explosive fillings,with a range of velocities of detonation,was used to investigate the performance,in terms of target penetration, of both conical and dished metal liners and flat-bottomed cup liners mounted in cylindrical tubes. A nuniber of unexpected results were obtained when copper dish devices were mounted in metal tubes and demonstrated a penetration dependence on standoff to the target. These observations were confirmed by flash X-ray investigation of the functioning devices. Some discussion of the critical parameters controlling the liner behavior has been undertaken.