Ammunition and explosives – Blasting – Patterned blasting
Patent
1994-07-11
1995-07-11
Nelson, Peter A.
Ammunition and explosives
Blasting
Patterned blasting
102313, 1022027, 149105, F42B 310
Patent
active
054311047
ABSTRACT:
An exploding foil initiator for operation with perforating gun assemblies or other equipment placed in a well borehole is set forth. This device utilizes a foil bridge adjacent to a flyer layer and a barrel having a central bore. When the foil bridge is vaporized, a disk is cut by the bore, and is directed through the bore of the barrel, traveling at a high velocity to deliver impact against a secondary explosive. The secondary explosive is formed of BRX explosive which is a pellet of explosive material of 1,3,5-trinitro-2,4,6-tripicrylbenzene. Detonation is accomplished with a high voltage, high current pulse of substantial voltage amplitude of about 1100 to not more than about 2000 volts.
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Schwarz, Alfred C.; A New Technique for Characterizing an Explosive For Shock Initiation Sensitivity, Dec. 1975, National Technical Information Service, U. S. Department of Commerce.
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