FR2629580A1 - Piercing projectile with a hollow-punch core - Google Patents

Abstract

The invention relates to a piercing projectile with an armoured core. This projectile consists of an armoured core 8 surrounded by a rifling engaging sleeve 7, it being possible for the whole to be covered by a protection sleeve 4. The core of this projectile includes on its front face 1 a cavity 2 which is axisymmetric about the longitudinal axis of the core 8, the edge 3 of which cavity is sharpened so as to form a circular cutter so that upon impact the core behaves as a hollow punch. The cavity 2 may be covered, whilst remaining empty, by the sleeve 4, it being possible for the back of the core 6 also not to be covered by the sleeves 7 and 4. This projectile according to the invention is particularly intended for charging munitions with medium and low initial velocities.

Description

 The present invention relates to a perforating projectile with an armored core.

 Figure I shows in section the projectile 1 according to the invention.

 Usually, this type of projectile consists of an armored core (8) surrounded by a malleable striping jacket (7), the whole being generally covered with a thin protective jacket (4). The front (I) of the nucleus of these projectiles is formed either of a point, or of a flat, or both at the same time (frustoconical nucleus). The external shape and weight of these projectiles are close to those of lead-core bullets, which gives them a reaction to normal fire. On impact, this type of projectile shows superiority over a conventional bullet only against hard materials: Where the conventional bullets disintegrate, the pointed cores work like a nail, the dishes behaving in the same way of a punch.

 The projectile according to 1 t invention is a bullet with an armored core of traditional shape whose core (8) carries on its front face (I) instead of a dish or a point, a cavity (2) with cutting edge cavity defined by a surface of revolution centered on the longitudinal axis of the core (8), so that on impact, the core (8) functions in the form of a punch. The edge (3) forms a circular knife whose lip can be sharpened inwards (funnel) fig I, outwards (conical), or both.

 This projectile can be lined externally, the cavity (2) possibly being visible (hollow point), or, while remaining empty, covered by the external liner (4) (Dotted area). The back of the core (rear face (S)) may include a part (6), the tail, not covered by the shirts (4) and (7) for scratching, (Dotted area (6)), the latter realization aiming either to increase the mass ratio (core / projectile), or to obtain a sufficiently heavy projectile so that it remains in the subsonic domain.

 The shirt (7) is made of a malleable material, usually lead, but it is also possible to use a plastic material capable of deforming to allow scratching.

This projectile is the result of a compromise because it is all the more effective the more fragile it is. Its effectiveness - fragility increases with
The diameter of the cavity (2). The thinner the knife, the easier it will sink into the target.

 - The depth of the cavity (2). The deeper it is, the more it can contain target debris before the nucleus turns into a flat-tipped nucleus.

 The knife lip (3). The sharper it is, the more it cuts. Similarly the internal sharpening (fig I), which unfortunately makes the steel of the knife work with traction, penetrates better than the external sharpening.

 according to a preferred embodiment, the complete projectile will be in accordance with FIG. I, namely an externally jacketed projectile, which in the calibers of automatic weapons will have its cavity (2) covered, while remaining empty, by the jacket (4 ), the tail (6) being generally outgoing.

The core (8) and the cavity (2) will be cylindrical, their diameters being chosen to the maximum of possibilities.

The knife (3) will have a funnel-shaped lip so that after impact. possibly having cut the shirt (4), it forms a circular notch in the target, the bearing force of the bevel of the knife (3) tending both to restrict the cutting inside the cavity (2) and to blow out the area thus circumscribed.

 This projectile according to the invention is particularly intended for loading ammunition at medium and low initial speeds.

Claims (4)

 I) Perforating projectile with armored core, characterized in that the front face (I) of the core (8) comprises a cavity (2) defined by a surface of revolution centered on the longitudinal axis of the core (8).  2) A piercing projectile according to claim (I) characterized in that the cavity (2) of the armored core (8) can be, while remaining empty, covered by the outer jacket (4) of the projectile.  3) A piercing projectile according to claim (I) characterized in that the edge (3) of the cavity (2) of the core (8) forms a circular knife.  4) A piercing projectile according to claim (I) characterized in that the rear of the core (8) may include a part (6) not covered by the external (4) and internal (7) scratches jackets.