Effect of initial air pressure on the detonation activity of an explosive aerosuspension

A. V. Pinaev^a, P. A. Pinaev<sup>b

a</sup> Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
^b Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

Abstract: The effect of air pressure (0.01–0.3 MPa) on the detonatability of an aerosuspension of secondary explosive particles at a low mean volume density of the explosive (0.14–1.28 mg/cm$^3$) is experimentally studied. The structure and basic parameters of detonation depending on the explosive density and initial gas pressure are determined, and the mechanism of low-velocity detonation propagation in explosive aerosuspensions is revealed. The lower concentration limits of detonation at different initial gas pressures are found.

Keywords: secondary explosives, detonation limits, detonation mechanism, critical density of an explosive aerosuspension, detonation velocity.

UDC: 534.222.2

Received: 20.05.2013
Revised: 13.11.2013

 English version: Combustion, Explosion and Shock Waves, 2014, 50:4, 429–440

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