Ammunition and explosives – Igniting devices and systems
Patent
1977-08-03
1978-11-07
Brown, David H.
Ammunition and explosives
Igniting devices and systems
102DIG7, 102 38MM, 175 2, F42B 1102
Patent
active
041239750
ABSTRACT:
A projectile having a length to diameter ratio greater than 6 to 1 is propelled from a launcher by a propellant charge toward a rock target at velocities of 500 ft./sec. and higher to more efficiently penetrate the rock for excavation purposes.
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