NDLI: Initiation of PETN detonation by an impactor and a high-enthalpy gas flow

Content Provider	Springer Nature Link
Author	Ershov, A. P. Kashkarov, A. O. Pruuel, E. R.
Copyright Year	2016
Abstract	This paper compares two methods of near-threshold initiation of a loose-packed PETN charge: by impact of a plate and by injection of an intense flow of hot gases into the powder. Synchrotron diagnostics of material density was used. Both methods lead to the development of detonation in about 10 μs, but the nature of initiation differs sharply. Initiation by an impermeable piston involves the formation of a dense plug of compressed material. After some delay, a wave is formed at the front of this plug which initiates chemical reaction and accelerates to normal detonation. For high-enthalpy initiation by a hot gas flow, the compression of the powder is low and the process develops in the gas-permeable material, starting from the stage of rapid convective combustion followed by transition to detonation.
Starting Page	96
Ending Page	101
Page Count	6
File Format	PDF
ISSN	00105082
Journal	Combustion, Explosion and Shock Waves
Volume Number	52
Issue Number	1
e-ISSN	15738345
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-04-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	initiation detonation combustion deflagration-to-detonation transition Mechanics Classical Continuum Physics Physical Chemistry Vibration, Dynamical Systems, Control Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Physics and Astronomy Fuel Technology Chemical Engineering Energy Engineering and Power Technology

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