DE102010006221A1 - Spin-stabilized projectile - Google Patents

Abstract

The invention relates to a spin-stabilized projectile (1) with a guide band (4) which is composed of at least two annular partial guide bands (5, 6) arranged axially one behind the other. In order to ensure that the durability of the connection between the multi-part guide band (4) and the corresponding projectile body of the projectile (1) is also guaranteed when high centrifugal forces act on the guide band (4), as occur with artillery shells, the invention proposes before arranging each of the partial guide strips (5, 6) in a separate groove (7, 8) of the projectile (1).

Description

The invention relates to a spin-stabilized projectile with a guide band according to the features of claim 1.

In particular artillery ammunition spin-stabilized projectiles are used, on which the rear side a guide band is arranged, which is pressed into a corresponding dovetail groove of the projectile. In this case, the guide band may be formed in one or more parts, wherein in the case of a multi-part guide band, the axially adjacent annular part guide belts are also within the dovetail groove of the projectile. The partial guide bands can be made of different materials (for example brass and soft iron).

It has proved to be disadvantageous that in modern artillery projectiles due to the high rotational speed and the high centrifugal force thus generated and the relatively large width of the guide belts of about 35 to 40 mm in these projectiles, the durability of the positive connection between the respective guide band and the projectile body is often not given. Rather, due to the force acting on the guide belt high centrifugal force to a lifting or tearing of the respective guide belt, whereby the ballistics of the projectile is adversely affected.

The invention has for its object to disclose a spin-stabilized projectile of the type mentioned, in which the durability of the connection between a multi-part guide band and the corresponding projectile body is also guaranteed when centrifugal forces act on the guide band, as they occur in artillery shells.

This object is achieved by the features of claim 1. Further, particularly advantageous embodiments of the invention disclose the dependent claims.

The invention is based essentially on the idea that each of the partial guide bands is arranged in a separate groove of the projectile. The shape and arrangement of the grooves is dependent on the particular purpose. Preferably, the shape of a dovetail groove has been offered.

It has proven to be advantageous if the axial distance between adjacent dovetail grooves and / or the respective mutually facing regions of the partial guide bands are selected such that the partial guide bands directly adjoin one another. However, the partial guide belts can also be designed so that, as far as necessary, a "flow" of the material during the pipe run is made possible.

By replacing a single, relatively long (dovetail) groove by a plurality of shorter (dovetail) grooves is achieved that the centrifugal forces occurring can be better distributed. By selecting appropriate materials for the partial guide bands, both the durability of the connection of the partial guide bands to the projectile body can be ensured and the guide belt wear can be reduced.

The partial guide bands may be made of the same material or different materials, for example, to ensure both high wear resistance and good lubricity. Thus, for example, seen in the weft direction, first part guide strip made of brass and the second part guide strip made of soft iron.

It is also possible to use a material for at least a partial guide band of the projectile, which closes (repaired) defective areas of the inner surface of the corresponding weapon barrel when the projectile is fired.

Further details and advantages of the invention will become apparent from the following, explained with reference to drawings embodiment.

The 1 shows a longitudinal section through the rear region of a spin-stabilized explosive projectile 1 , Here are the reference numerals 2 the projectile shell of the projectile body and 3 the explosive charge of the projectile 1 designated.

The projectile 1 includes a leader tape 4 , which consists of two axially successively arranged, annular part-guide belts 5 . 6 composed. It can, seen in the direction of firing, first part-guide tape 5 made of brass and the second part guide band 6 Made of soft iron.

According to the invention, it is now provided that each of the two partial guide bands 5 . 6 bullet body side in a separate groove 7 . 8th the projectile shell 2 is arranged, in such a way that the axial distance of the two dovetail grooves 7 . 8th and / or the facing areas 9 . 10 the part guide bands 5 . 6 are chosen such that the partial guide bands 5 . 6 connect directly to each other. The shape of the grooves 7 . 8th is preferably a dovetail groove.

2 shows a further variant of the integration of the partial guide bands 5 . 6 , which in this case at least in the upper area between each other a spacing 11 exhibit. This arrangement allows the belts to flow during the passage of the projectile through the pipe 1 ,

Of course, the invention is not limited to the embodiment described above. Rather, more than two partial guide belts can be arranged in more than two adjoining dovetail slots. The partial guide bands in the individual dovetail grooves can also be made of the same material if this is expedient (for example when using a specific ammunition or a corresponding weapon barrel).

LIST OF REFERENCE NUMBERS

1

Projectile, explosive projectile

2

projectile casing

3

explosive charge

4

guide band

5

(first) partial leadership band

6

(second) partial leader band

7, 8

dovetail grooves

9, 10

areas

11

distance

Claims (5)

Spin-stabilized projectile ( 1 ) with a guide tape ( 4 ), which consists of at least two axially successively arranged, annular part-guide belts ( 5 . 6 ), characterized in that each of the partial guide bands ( 5 . 6 ) in a separate groove ( 7 . 8th ) of the projectile ( 1 ) is arranged. Spin-stabilized projectile according to claim 1, characterized in that the shape and arrangement of the groove ( 7 . 8th ) depends on the respective purpose and preferably is a dovetail groove. Spin-stabilized projectile according to claim 1 or 2, characterized in that the axial spacing of the adjacent grooves ( 7 . 8th ) and / or the mutually facing areas ( 9 . 10 ) of the partial guide straps ( 5 . 6 ) are selected such that the partial guide bands ( 5 . 6 ) directly adjoin one another or at least in the upper area a distance ( 11 ) exhibit. Spin-stabilized projectile according to one of claims 1 to 3, characterized in that the partial guide belts ( 5 . 6 ) consist of different materials. Spin-stabilized projectile according to claim 4, characterized in that in the case of one of two partial guide belts ( 5 . 6 ) existing leadership ( 4 ), seen in the weft direction, first part guide tape ( 5 ) made of brass and the second part guide band ( 6 ) may consist of soft iron.

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