Specific Features of the Initiation and Propagation of Low-Velocity Detonation in the High-Density Charges Based on Ammonium Perchlorate Mixtures with Combustible Additives

Abstract

The propagation features and critical conditions of low-velocity detonation (LVD) in the high-density charges of finely dispersed ammonium perchlorate (APC) mixtures with combustible and explosive additives are studied. The effect of the relative charge density, the combustible component type, and the ratio of mixture components, including the mixtures strongly enriched with a combustible agent, on the propagation of detonation is considered. It is shown that the dependence of the detonation velocity on the relative charge density in the case of APC mixtures with combustible additives has a plateau-like region, in which the detonation velocity is at a level of 2000 m/s and is practically independent of the density and nature of the combustible component. Moreover, the critical charge density, above which the failure of LVD is observed, is revealed. In the case of ternary mixtures with a liquid explosive (nitromethane) additive, there is no similar dependence, and the detonation velocity monotonically grows with an increase in the relative density. The critical initiation pressures of compositions are also determined within the density range, where the density has no effect on the detonation velocity. The performed studies make it possible to refine the composition and characteristics of high-density mixtures, for which the application of LVD regimes can ensure the creation of efficient explosion-proof impulse devices.