EP0328877A1 - Projectile with a fragmenting shell - Google Patents

Abstract

The fragment jacket (15) of a projectile (1) is to be broken down into a number of fragments of the desired size by means of an explosive charge (18) which is located inside the fragment jacket (15), the explosive charge (18) being detonated by a detonator (10 ) is ignited at the desired time. This splinter jacket (15) has a number of rings (14) which are provided with predetermined breaking points (22-24). The splinter jacket (15) splinters along these predetermined breaking points (22-24) into the fragments of the desired size.

Description

The invention relates to a projectile with a splinter jacket, according to the preamble of the claim.

• a) In der britischen Patentschrift Nr. 778 900 ist ein Geschoss beschrieben, das auch als Bombe oder Granate bezeichnet wird und eine explosive Ladung enthält. Die Oberfläche dieser Ladung, welche am Splittermantel anliegt, ist mit einer Anzahl sich in Längsrichtung des Geschosses erstreckenden Nuten versehen, welche ein geeignetes Muster bilden, durch das die Grösse und Form der Bruchstücke bestimmt ist. Insbesondere wird die Sprengladung in eine Papier- oder Blechhülse eingefüllt, welche diese Nuten aufweist. Der Splittermantel kann aus einzelnen Ringen zusammengesetzt sein, welche an ihrer Innenseite eine glatte Oberfläche aufweisen.
• b) In der schweizerischen Patentschrift Nr. 485 194 ist ein Geschoss mit einem Splittermantel beschrieben, in dem sich eine von einer Folie umgebene Sprengladung befindet. Die Folie weist eine Anzahl längliche, sich in Längsrichtung des Geschosses erstreckende, in Reihen angeordnete Einbuchtungen auf. Die Einbuchtungen benachbarter Reihen sind in Richtung der Reihen zueinander versetzt. Zwischen je zwei Reihen von Einbuchtungen ist ein Abstand angeordnet, in welchem die Folie flach ist.

Such bullet-coated projectiles are known; attention is drawn to the following patents:

• a) British Patent No. 778 900 describes a projectile which is also referred to as a bomb or grenade and contains an explosive charge. The surface of this charge, which rests on the fragment jacket, is provided with a number of grooves extending in the longitudinal direction of the projectile, which form a suitable pattern by which the size and shape of the fragments is determined. In particular, the explosive charge is filled into a paper or sheet metal sleeve which has these grooves. The splinter jacket can be composed of individual rings which have a smooth surface on the inside.
• b) In Swiss Patent No. 485 194, a projectile with a splinter jacket is described, in which there is an explosive charge surrounded by a foil. The film has a number of elongated indentations, which extend in the longitudinal direction of the projectile and are arranged in rows. The indentations of adjacent rows are offset from one another in the direction of the rows. A distance is arranged between every two rows of indentations, in which the film is flat.

It has now been shown that the heavy metal In this way, the splinter jacket cannot be broken down into fragments of the desired size.

The object which is to be achieved with the present invention is to create a splinter jacket which can be reliably broken down into fragments of the desired size by the explosive charge.

This object is achieved according to the invention in that the projectile also has the features in the characterizing part of claim 1 in addition to the features of the preamble.

The ring preferably has cylindrical recesses which extend in the longitudinal direction of the projectile and which are open towards the interior of the ring. Or the ring has a recess which extends in the longitudinal direction, has a triangular cross section and is open towards the inside of the ring. Or the ring is divided into a number of segments which are joined together by sintering.

This formation of predetermined breaking points on the splinter jacket has the advantage that they can be produced relatively easily and ensure that the splinter jacket is broken down into fragments of the desired size.

• Fig.1 einen Längsschnitt durch das Geschoss mit Splittermantel;
• Fig.2 einen Querschnitt nach Linie II-II in Fig.1 gemäss einem ersten Ausführungsbeispiel;
• Fig.3 einen Querschnitt nach Linie III-III in Fig.1 gemäss einem zweiten Ausführungsbeispiel;
• Fig.4 einen Querschnitt nach Linie IV-IV in Fig.1 gemäss einem dritten Ausführungsbeispiel.

Various exemplary embodiments of the projectile according to the invention with a splinter jacket are described in detail below with reference to the attached drawing. It shows:

• 1 shows a longitudinal section through the projectile with splinter jacket;
• 2 shows a cross section along line II-II in Figure 1 according to a first embodiment;
• 3 shows a cross section along line III-III in Figure 1 according to a second embodiment;
• 4 shows a cross section along line IV-IV in Figure 1 according to a third embodiment.

According to FIG. 1, the projectile 1 according to the invention with a splinter jacket 15 is composed of the following parts:
- A ground igniter 10 known per se, which has a
Amplifier charge 11 ignites an explosive charge 18 inside the floor 1.
- A projectile body 12, to the rear end of which the ground igniter 10 is fastened, which contains the aforementioned booster charge 11 and the explosive charge 18 in its interior and a hood 13 is fastened to the front end thereof.
- A number of rings 14, which together form the splinter jacket 15 and which are pushed onto a mandrel 16 of the projectile body 12 and are held together by said hood 13.
- A guide band 17, which is anchored to the projectile body 12 and transmits the swirl caused by swirl grooves of the weapon barrel to the projectile 1.

The projectile hood 13 is manufactured, for example, from plastic or light metal. Al-Zn-6MG-Cu 1.5 is particularly suitable as the light metal. This hood 13 is screwed onto the projectile body 12 by means of a thread 19 or fastened to the projectile body 12 in some other way. The projectile body 12 is also made of light metal, in particular Al-Zn-6MG-Cu 1.5. It has the thread 19 mentioned at its front end for fastening the projectile hood 13 and at its rear end it has a second thread 20 for fastening the base igniter 10. A bore 21 is provided in the mandrel 16 of the projectile body 12 for receiving the explosive charge 18th

The explosive charge 18 is composed, in the usual way, of a number of cylindrical bodies, which are produced in particular from Hexal W15.

The base igniter 10 and the booster charge 11 are, as said, known per se and are therefore not described in more detail here. The splinter jacket 15 is composed, for example, of six rings 14, the number of rings 14 not being important. These rings 14 are preferably made of sintered metal, especially heavy metal, e.g. from W, NI 4.5 FE. It is essential that these rings 14 of the splinter jacket 15 have predetermined breaking points so that they explode into fragments of the desired size due to the explosive charge 18. These predetermined breaking points can have different shapes. According to FIG. 2, there are cylindrical recesses 22 in the ring 14, which are open towards the inside of the ring and extend in the longitudinal direction. According to FIG. 3, there are recesses 23 in the ring 14 which extend in the longitudinal direction and have a triangular cross section and are open towards the inside of the ring. 4, the ring 14 is divided into a number of segments 24, which are joined together by sintering.

The invention is of course not restricted to these three embodiments according to FIGS. 2-4.

Claims (1)

Projectile (1) with a splinter jacket (15), in which an explosive charge (18) is located, with a detonator (10) for igniting the explosive charge (18) and with means (22-24) for breaking the splinter jacket (15) into fragments to disassemble of the desired size, the splinter jacket (15) being composed of individual rings (14) which have predetermined breaking points (22-24) and split along these predetermined breaking points (22-24) into fragments of the desired size, characterized in that the Ring (14) is divided into a number of segments (24) which are joined together by sintering.

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