Study of the electromagnetic system of holding the mine in the barrel channel of the gas detonation mortar

Abstract

The paper presents the results of the study of the electromagnetic system of holding the mine in the bore of the gas detonation mortar. To reduce the time from the detection of the target to its destruction, the use of a gas detonation mortar with a semi-automatic guidance system in the direct line of sight of the target is proposed. This type of mortar will reduce the total time of hitting the target to 2-3 minutes. An analysis of the influence of the magnetic holding of the mine on the operation of the gas detonation mortar was carried out. Holding the mine in the bore during the formation of the gaseous propellant charge allows you to fix the volume of the charge. The electromagnetic mine holding system consists of an electromagnetic coil, a magnetic circuit, a DC source with a commutator. The switch on of the electromagnetic system is carried out immediately before the shot to reduce the heating of the coil. The mine holding force was calculated, on the basis of which the parameters of the mine holding electromagnetic system were substantiated. Based on the results of experimental studies, the dependence of the holding force of the mine on the power supply current of the electromagnetic system was determined. The developed dynamometric measurement system consisted of a piezoelectric force meter with a spring, an electric cylinder and a cable clutch. The pressure when the mine detaches from the electromagnet in the barrel of the gas detonation mortar is estimated. It was found that the power consumed by the electromagnetic system is about 15 W, and with holding forces of 930-980 N, mine extraction will begin at the overpressure of the compressed gas charge, equal to 0.15-0.2 MPa.