Experimental analysis of liquid jet propulsion systems effects on IEDs casing materials

Abstract. One of the common methods for neutralizing Improvised Explosive Devices (IEDs) involves the use of projectile and liquid jet disruption. Liquid jet disruption can be achieved using disruptors or systems that harness explosion energy for propulsion, the latter being either omnidirectional or with directed action. The requirements for neutralizing IEDs refer to interrupt functions or separate components to prevent an unacceptable detonation. Although there are such neutralization systems, the literature is not very rich when it comes to aspects related to the velocities of the liquid jets and their action on casings and possible initiation of the IEDs. In these conditions, the paper presents the results of experimental research conducted by the authors on explosive propulsion systems of both omnidirectional and unidirectional types, with capacities of 0.5, 1, and 2 liters. The research aimed to establish the minimum distances at which the initiation of the detonator of the IEDs occurs under liquid jets and their ability to perforate casings of various thicknesses made of wood, metal, polycarbonate, and textile/leather materials. The obtained results showed that unidirectional explosive propulsion systems of liquid jets can be successfully used for the neutralization of IEDs.