FR2669996A1 - PROJECTILE FOR AMMUNITION OF LARGE CALIBER FIREARMS. - Google Patents

Abstract

The projectile comprises a casing (1) made of flexible, waterproof and deformable material, capable of delimiting an internal volume (1a) capable of being filled with a liquid or pasty fluid (2).

Description

1 - Projectile for large caliber ammunition. The invention

  relates to the technical sector of ammunition. It is known to use, for certain types of large caliber firearms, special ammunition

  allowing the firing of particular projectiles.

  Generally, this type of weapon is used as a defense weapon Ammunition can, for example, consist of a case, one end of which is capable of receiving the projectile, while the other end has a chamber shaped to receive a propellant cartridge. In particular, the propellant cartridge is specially designed for projectile fire, the material, diameter and weight of which are determined for

  avoid penetration at impact from a short distance.

  Generally, the projectiles are produced in the form of a large diameter ball, in any flexible and deformable material, such as foam, rubbery material Whatever the material used and the shape of the projectile, it appears that the latter constitutes a full volume, so that after firing, the impact surface of the projectile is very substantially limited to the surface

  initial generated by the volume of said projectile.

  However, in some cases it is important that

  this impact surface is as large as possible.

  The problem which the invention proposes to solve is therefore to design a projectile for large caliber firearms, the characteristics of which allow 2 - to obtain on impact, a much larger surface.

  than that generated by the initial volume of the projectile.

  Such a problem is solved in that the projectile comprises an envelope made of flexible, waterproof and deformable material, capable of delimiting an internal volume capable of

  to be filled with a liquid or pasty fluid.

  Another problem which the invention proposes to solve is to be able to use the weapon in all

  circumstances, regardless of the outside temperature.

  Such a problem is solved in that the liquid or pasty fluid is selected to be insensitive to

low temperatures.

  The invention is set out below in more detail using the appended drawings, in which: FIG. 1 shows an example of ammunition for a large caliber firearm, equipped with the projectile according to the invention. Figure 2 is a longitudinal sectional view

  of an embodiment of the projectile.

  Figure 3 shows the impact surface obtained with

the projectile.

  As indicated, the projectile according to the invention, designated as a whole by (P), finds a particularly advantageous application, for munitions of weapons with

large caliber fire.

  Figure 1 shows a non-limiting example of ammunition which comprises in a known manner, a case (E), generally made of plastic One of the ends of the case (E) is shaped to receive the projectile (P), while the other end has a chamber capable of receiving, for example, a cartridge

propellant (C).

  According to the invention, the projectile (P) comprises an envelope (1) made of flexible, waterproof and deformable material, capable of delimiting an internal volume (la) capable of being

  filled with a liquid or pasty fluid (a).

  In the example illustrated in Figures 2 and 3, the envelope (1) is shaped to constitute a spherical volume, without excluding other geometric shapes, depending, for example, on the type of

ammunition used.

  It therefore appears, taking into account the nature of the material constituting the envelope, in combination with the internal filling of the volume by means of the liquid or pasty fluid, that a surface is obtained, at the time of the impact of the projectile. greater than that generated by the initial volume of said projectile

(figure 3).

  Indeed, at the time of impact, there is a crushing of the envelope, which, under the effect of the pressure exerted by the liquid fluid, deforms significantly, constituting a surface much

  larger than that generated by its initial volume.

  Obviously, the size of the impact surface, after crushing the envelope, is variable depending on the constituents and the speed remaining at

moment of impact.

  The envelope (1) is of a reduced thickness, of the order of about one mm, being executed in any material sufficiently elastic and resistant to not burst at the time of impact, while having the -4possibility to crash and expand, in combination

with the fluid.

  The production of the projectile, as defined, can be carried out in different ways. For example, one can make, in the envelope (1), a hole for filling the internal volume with the chosen liquid fluid, then any operation is practiced. , such as

solder, to fill this hole.

  Regarding the liquid or pasty fluid, the latter is selected to be insensitive to low temperatures, in particular,

  The advantages are apparent from the description.

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Claims (2)

R E V E N D I C A T I 0 N S   -1 Projectile for large caliber firearms ammunition, characterized in that it comprises an envelope (1) made of flexible, waterproof and deformable material, capable of delimiting an internal volume (la) capable of being filled   a liquid or pasty fluid (2).   -2 Projectile according to claim 1, characterized in that the liquid or pasty fluid (2) is selected for   be insensitive to low temperatures.