Preliminary Study of Coupling Electrical Energy to Detonation Reaction Zone of Primasheet-1000 Explosive

Report No. ARL-RP-441
Authors: Thuvan Piehler; Charles Hummer; Richard Benjamin; Eugene Summers; Kevin McNesby; Vincent Boyle
Date/Pages: May 2013; 16 pages
Abstract: It is anticipated that the introduction of high currents will increase the energy content of the conduction gases in the vicinity of the detonation front and lead to an increase in detonation velocity through ohmic heating. The approach is to transfer the stored electrical energy from a 5.5-kV, 0.010-F, 200-kJ capacitor bank into the conductive zone behind the detonation front of Primasheet-1000 explosive reaction. Upon initiation of the explosive, an explosive switch allows the energy stored in the pulsed power assembly to be transferred through the copper plates (separated by a 0.1-, 0.2-, or 0.3-cm-thick layer of explosive) and into the conducting reaction zone of the detonation front. There was an increase of about 4% in the detonation velocity observed in a 0.1-cm-thick layer and about 2.6 % detonation velocity enhancement observed in a 0.2-cm-thick explosive layer. No detonation velocity enhancement was observed in the 0.3-cm-thick layer of explosive.
Distribution: Approved for public release
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Last Update / Reviewed: May 1, 2013