Ammunition and explosives – Projectiles – Fragmenting
Patent
1992-10-30
1994-03-08
Tudor, Harold J.
Ammunition and explosives
Projectiles
Fragmenting
102510, 102518, F42B 1206
Patent
active
052918335
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to projectiles of the subcaliber type and relates more specifically to such projectiles designed to possess high firing accuracy and substantial terminal efficiency.
Destruction of a target at a relatively long distance may be attempted from a projectile that explodes on impact.
While such projectiles have a substantial terminal efficiency, on the other hand, they have relative accuracy due to their design.
Moreover, such projectiles are expensive and require very strict storage and handling precautions to prevent their unintended explosion.
SUMMARY OF THE INVENTION
The goal of the present invention is to provide a new projectile able to possess a high impact energy, have reliable firing accuracy, and develop substantial terminal efficiency without using an on-board explosive charge.
More specifically, the invention is directed to an armor-piercing, fragmentation, subcaliber projectile which can be made at low cost by machining and assembly in automatic production lines, which is reliable in handling after manufacture, and which reliably combines the properties of high impact energy, firing accuracy, and substantial terminal efficiency.
To achieve the above objectives, the projectile according to the invention is characterized in that: axial bore whose large base opens at the plane of the front face of the anterior part of the body, rear face of the head and having at least one frustoconical support which is engaged to rest on the frustoconical bore of the body so as to leave some play between the rear face of the head and the front face, tail in the bore.
BRIEF DESCRIPTION OF THE DRAWINGS
Various other characteristics will emerge from the description below which refers to the attached drawings showing, as nonlimiting examples, embodiments of the subject of the invention.
FIG. 1 is a partially cut away elevation section of a first embodiment of the subject of the invention.
FIG. 2 is a partially cut away elevation section of another embodiment of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
According to the example illustrated in FIG. 1, the projectile according to the invention, of the armor-piercing subcaliber type, has a body 1 made of a dense material such as tungsten, tungsten carbide, impoverished uranium, etc. Body 1 is generally cylindrical and has an axis of revolution x-x'.
Body 1 is cut off at its anterior part to delimit an end part 2 able to accept installation by crimping or banding of a ballistic nose cone 3 made of a malleable material having good air penetration characteristics, such as a light alloy or a copper alloy.
Nose cone 3 also serves to hold a head 4 which has an axis of revolution y-y' designed to be aligned with axis x-x', Head 4, frustoconical for example, is located abutting a matching hollow 3a of the nose cone. Means other than frustoconical cooperation could be provided to axially immobilize head 4. Head 4 is extended from its rear face 5 by a tail 6 that is engaged in an axial bore 7 of body 1, starting at front face 8 of end part 2. Tail 6 can be an integral part of head 4 or consist of an independent part.
Bore 7, in the example illustrated, is of the blind frustoconical type, and its large base opens at the plane of front face 8. Bore 7 matches the general shape of tail 6 which also has a frustoconical shape of the continuous or preferably segmented type. Tail 6 includes successive frustoconical supports 9.sub.1, 9.sub.2, . . . 9.sub.n with the same angle at the center, alternating with cut-off sections with a smaller cross section. Axial immobilization of head 4, for example by nose cone 3, is provided in matching fashion between bore 7 and frustoconical supports 9 such that, when these supports rest on the peripheral wall of bore 7, a gap or play 10, for example between 0.05 and 0.5 mm, is present between rear face 5 of head 4 and front face 8 of end part 2.
Body 1 can advantageously have areas of less resistance 11 which can be disposed axially or, preferably, in planes P transver
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patent: 4970960 (1990-11-01), Feldman
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Giat Industries
Tudor Harold J.
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