Ammunition and explosives – Shells – Focused or directed detonation
Patent
1992-03-24
1993-03-30
Tudor, Harold J.
Ammunition and explosives
Shells
Focused or directed detonation
102254, 102260, 102308, 102255, F42B 1216, F42C 1534, F42C 1520
Patent
active
051986159
ABSTRACT:
A fuzing system for use in operating tandem demolition warheads to sequentially activate a propellant on the rear of a follow through charge, detonate a forward shaped charge and detonate the follow through charge after a brief delay. An interface charge is located proximate to blasting caps. A first fuze responsive to the interface charge is configured to ignite the propellant and to arm the first arming assembly. A second fuze responsive to the interface charge is configured to arm the second arming assembly. A first arming assembly containing a first firing pin is located proximate to the follow through charge. A delay fuze is interposed between the first primary charge and the follow through charge. A second arming assembly containing a second firing pin is located proximate to the forward-shaped charge. In the armed state, a primary explosives are interposed between the firing pins and the follow through charge and forward shaped charge. The ignited propellant accelerates the follow through charge into the second firing pin, detonating the forward-shaped charge and forming a hole in the structure to be demolished. The shock wave from the detonation of the foward-shaped charge decelerates the follow through charge, causing the first firing pin to impact the first primary explosive, activating a delay fuze. The delay fuze provides sufficient time for the follow through charge to enter the opening in the structure formed by the forward-shaped charge prior to detonation.
REFERENCES:
patent: 2946283 (1960-07-01), Udry
patent: 3439617 (1969-04-01), Boyd et al.
patent: 4063512 (1977-12-01), Davis
patent: 4803928 (1989-02-01), Kramer
patent: 4967666 (1992-11-01), Kellner et al.
Maruska William O.
Robbie Scott W.
Alliant Techsystems Inc.
Tudor Harold J.
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