THERMAL ENERGY ANALYSIS OF PROJECTILES DURING RICOCHETING USING A THERMAL CAMERA

Abstract

This paper presents the results of a study of the hazards of ground ignition and/or explosion when various small-calibre projectiles strike various solid materials placed on a test stand in environments at risk of ignition (fire) or explosion (ricochets, projectile penetration of obstacles). For projectile ricocheting tests, the following were used: armour plate, concrete, sidewalk and granite slabs, etc., and various small-calibre projectiles. Projectiles impacts were recorded with a high-speed camera and thermal camera. The ignition capability of solid flammable materials during projectile ricocheting was studied, and the temperatures and surface areas of isotherms were measured as a function of time. From the spherical distribution of thermal energy radiation in space, their volume, mass of air occupying the studied area, masses of projectile disintegrating into fragments (after impact), thermal energy during projectile ricocheting, histograms of area temperatures, temperature, were calculated.