Safe and arm device for spinning munitions

Details Safe and arm device for spinning munitions Safe and arm device for spinning munitions

1988-11-04

1989-09-26

Brown, David H.

Ammunition and explosives

Igniting devices and systems

Arming devices

102235, F42C 1504, F42C 1526

Patent

active

048691720

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: 3603259 (1971-09-01), Webb
patent: 3830159 (1974-08-01), Ranalli et al.
patent: 4419934 (1983-12-01), Apotheloz
patent: 4464991 (1984-08-01), Kaiser
patent: 4677914 (1987-07-01), Apotheloz
patent: 4691634 (1987-09-01), Titus
patent: 4770096 (1988-09-01), Maruska et al.

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