Study on Basic Mechanism of Reactive Armour

H. S. Yadav; B. M. Bohra; G. D. Joshi; S. G. Sundaram; P. V. Kamat

doi:10.14429/dsj.45.4120

H. S. Yadav High Energy Materials Research Laboratory, Pune
B. M. Bohra High Energy Materials Research Laboratory, Pune
G. D. Joshi High Energy Materials Research Laboratory, Pune
S. G. Sundaram High Energy Materials Research Laboratory, Pune
P. V. Kamat High Energy Materials Research Laboratory, Pune

DOI: https://doi.org/10.14429/dsj.45.4120

Keywords: Jet penetration, Detonating explosives, Jet, Explosives, Angle of attack, Metal plates, Penetration, Explosive effect

Abstract

Two basic mechanisms which operate in the functioning of reactive armour are presented. Both the explosive effect and cutting of metal plates by a jet have been investigated. The angle of attack and the confinement of the explosive have been found most significant factors in reducing the penetrating power of the jet. The effect of detonating explosives has been investigated with radiography. Some of the significant effects, like detonation of explosive by the impact of the jet, expansion of covering plates, disturbance in coherence and reduction in the penetration of the jet have been observed. It is found that the jet penetration in a stack of mild steel plates is reduced to 30 per cent of its blank penetration in present set-ups. A theoretical model has been conceived to study the interaction of moving plates and the jet. The critical thickness and surface cut in plates have been calculated.