Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1988-10-06
1989-10-31
Brown, David H.
Ammunition and explosives
Igniting devices and systems
Arming devices
102222, F42C 1534
Patent
active
048769614
ABSTRACT:
An ammunition unit has a fuze which includes an electrical trajectory safety device for preventing arming of the ammunition unit within a trajectory safety distance. An arming igniter actuable by the electrical trajectory safety device activates a movable portion for execution of an instantaneous movement to move a bursting cap disposed in the movable portion into an arming position in register with the initiation detonator included in a detonation chain and actuable by an impact or a proximity fuze contact. The movable portion is lockable by a locking pin, which is actuable on a retardation of the ammunition unit caused by a first hit of the ammunition unit against a first object located within the trajectory safety distance. Upon actuation, the locking pin locks the movable portion to prevent it from executing the instantaneous movement, even if the first hit were to cause mechanical action on the electronics which effects actuation of the arming igniter. The ammunition unit, on a second hit, assumes a safe position such that the total bursting of the ammunition unit through the intermediary of the bursting cap is prevented.
REFERENCES:
patent: 3148621 (1964-09-01), Varaud
patent: 4286521 (1981-09-01), Marer
patent: 4573411 (1986-03-01), Liebhardt et al.
patent: 4739705 (1988-04-01), Hudson et al.
patent: 4770096 (1988-09-01), Maruska et al.
.ANG.strom Bert
Nyg.ang.rds Olof
Aktiebolaget Bofors
Brown David H.
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