Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1987-11-12
1989-01-10
Brown, David H.
Ammunition and explosives
Igniting devices and systems
Arming devices
102206, 102232, 102262, 102264, F42C 1504, F42C 1526
Patent
active
047965320
ABSTRACT:
The invention relates to a safe and arm mechanism for an exploding projectile to be fired from a rifled gun. The projectile first experiences axial and angular acceleration which moves a setback ball to initially arm the mechanism. A third projectile parameter, angular velocity, functions to lock the ball in the armed position. During projectile flight, a spin actuated escapement mechanism moves toward a fully armed position, but may be precluded from reaching that fully armed position by a command arm arrangement. The projectile is then fully armed when a command arm signal releases the arrangement and the escapement mechanism is allowed to complete its motion to the fully armed position. When the projectile strikes a target, it experiences axial deceleration which moves a contact ball partway to a detonating position. After the projectile passes through the target surface and into a void, e.g., into the hull of a ship, the deceleration ceases and the contact ball moves under centrifugal force to a final position to detonate the projectile.
REFERENCES:
patent: 3381613 (1968-05-01), Webb
patent: 3465676 (1969-09-01), Simmen
patent: 3603259 (1971-09-01), Webb
patent: 3780660 (1973-12-01), Webb et al.
patent: 4320705 (1982-03-01), Petiteau
patent: 4419934 (1983-12-01), Apotheloz
patent: 4464991 (1984-08-01), Kaiser
patent: 4580498 (1986-04-01), Abt et al.
patent: 4677914 (1987-07-01), Apotheloz
Briody Thomas A.
Brown David H.
Magnavox Government and Industrial Electronics Company
Rickert Roger M.
Seeger Richard T.
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