Projectile arrangement

Details Projectile arrangement Projectile arrangement

1990-10-16

1991-11-12

Carone, Michael J.

Ammunition and explosives

Projectiles

Composite

F42B 1206, F42B 1406

Patent

active

050638556

ABSTRACT:
A projectile arrangement including a subcaliber projectile body and a segmented, discardable propelling cage sabot provided with a common form locking zone for the transmission of the acceleration forces. To reduce the notch effect on the projectile body, and thus the danger of breakage, due to the conventional thread grooves in the form locking zone, particularly in long, slender penetrators made of a breakage susceptible tungsten heavy metal, a novel form locking connection for the inner form locking region between the propelling cage and the projectile body is provided. This novel form locking connection is characterized in that in the region of the form locking zone beneath the exterior gas pressure receiving surface of the sabot, only the exterior surface of the projectile body is provided with preferably annular microgrooves and the surrounding inner surface of the sabot is smooth. The microgrooves are produced preferably by non-cutting shaping such as, for example, rolling or pressing in, and are configured as arcuate recesses having a relatively flat groove bottom and pointed lands between adjacent recesses. When the projectile arrangement is fired, the microgrooves of the relatively hard projectile body press themselves into the previously smooth interior surface of the relatively soft sabot, and thus produce a corresponding form locking connection only at the moment of firing.

REFERENCES:
patent: 2996011 (1961-08-01), Dunlap
patent: 3738279 (1973-06-01), Eyre et al.
patent: 3745926 (1973-07-01), Mertz et al.
patent: 4372217 (1983-02-01), Kirkendall et al.
patent: 4469027 (1984-09-01), Burns et al.
patent: 4671181 (1987-06-01), Romer et al.
patent: 4756255 (1988-07-01), Rosenberg et al.
"Internationale Wehrrevue", vol. 5, 1988, p. 474.

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