EP1314952B1 - Full calibre projectile - Google Patents

Description

The invention relates to a full-caliber projectile with a cylindrical guide area and an ogive-shaped projectile tip.

In particular, large-caliber armored projectiles have an ogive shape due to their relatively long shape trained projectile tip is too short a guide length (usually the length of the projectile area led through the weapon barrel), so that the corresponding projectile often poor stabilization within the weapon barrel and thus an unfavorable one Leaving ballistics and a bad hit pattern.

A spin-stabilized special projectile is already known from US Pat. No. 3,769,912 ogive-shaped projectile tip is significantly longer than the cylindrical one Guide area. In order to increase the length of the guide, this document already describes proposed a segmented in the circumferential direction on the projectile tip, at the Inner wall of the gun barrel supporting guide ring with three bowl-shaped Fasten the guide ring segments. During the passage of the bullet through the floor the guide ring segments remain in their specified position at the top of the projectile and, after the projectile has left the gun barrel, through on it centrifugal forces acting laterally.

The disadvantage of these projectiles is that the guide ring is relatively bulky must, because in the area of the projectile tip the entire distance between the projectile and must bridge the inner wall of the gun barrel. There is also a detachment of the guide ring after the projectile has left the weapon barrel, the effect sufficiently large centrifugal forces ahead, that of bullets made of smooth-tube cannons be shot, not available. Especially with conventional full-caliber bullets with a cylindrical guide area whose length is greater or is approximately equal to the length of the ogive-shaped projectile tip, such known guide rings not proven.

The invention has for its object to provide a full-caliber projectile in which simple way a better stabilization of the projectile within the gun barrel and thus better ballistics and accuracy than comparable floors is achieved.

This object is achieved according to the invention by the features of claim 1. Further, particularly advantageous embodiments of the invention disclose the subclaims.

The invention is essentially based on the idea of an in Circumferential direction segmented guide ring, the outer diameter of which is smaller than that Inner diameter of the weapon barrel is to be fastened in such a way that the guide ring segments when a predetermined launch acceleration occurs in the corresponding one Detach the gun barrel from the projectile and, due to the dynamic pressure, axially to the cylindrical one Leading area be pushed onto the floor until the radially spaced guide ring segments on the inner wall of the barrel and support it on the floor. The guide ring then extends the one hand cylindrical guide area and on the other hand reduces the guide play in this Range practically at zero.

In an advantageous embodiment of the invention, the adjacent guide ring segments are connected in such a way that after detaching from the projectile can move in the radial direction to the outside that it is radial But no axial displacement of the guide ring segments against each other can come.

This is e.g. thereby achieved that one of the adjacent guide ring segments at least one tongue-shaped extension extending in the circumferential direction has a positive fit in a recess of the adjacent guide ring segment intervenes. It is preferably provided that in each of the guide ring segments one end with a tongue-shaped extension and the other End with a tongue-like extension of the adjacent guide ring segment adapted recess is provided.

To detach the guide ring outside the barrel even on projectiles that can be fired from smooth tube cannons to ensure the guide ring should open preferably have an air pocket on its side facing the projectile tip.

For fastening the guide ring to the projectile, it has proven to be advantageous if the guide ring extends radially inwards and is provided with predetermined breaking points Fastening parts that non-positively in corresponding radial grooves of the projectile intervention. Alternatively, the guide ring can also be glued to the projectile, welded or be connected with the help of encircling straps.

Fig.1 den Längsschnitt eines in einem Waffenrohr befindlichen flügelstabilisierten Geschosses mit einem auf der Geschoßspitze befestigten Führungsring;

Fig.2 eine vergrößerte Darstellung des in Fig. 1 mit II bezeichneten Bereiches und

Fig.3 eine Seitenansicht der Geschoßspitze des in Fig. 1 dargestellten Geschosses.

Further details and advantages of the invention result from the following exemplary embodiments explained with reference to figures. Show it:

1 shows the longitudinal section of a wing-stabilized projectile located in a weapon barrel with a guide ring attached to the projectile tip;

2 shows an enlarged view of the area designated II in FIG. 1 and

3 shows a side view of the projectile tip of the projectile shown in FIG. 1.

In Figure 1, 1 denotes a full-caliber wing-stabilized projectile, which is in a is only indicated by dashed weapon barrel 2. With 3 are the cargo space and designated 4 the caliber tube.

The projectile 1 has a cylindrical guide area 5 which is connected to the rear side with a Sealing tape 6 is provided, and an ogive-shaped projectile tip 7.

According to the invention on the bullet tip 7 is a segmented guide ring in the circumferential direction 8 made of a deformable plastic with three cup-shaped Guide ring segments 9 attached, the outer diameter of which is smaller than the inner diameter the weapon barrel 2. The attachment of the guide ring 8 on the floor 1 takes place over several, each evenly distributed over the circumference radially inwardly extending fasteners 10 (Fig.2), which in corresponding Engage grooves 11 of the projectile 1 in a force-locking manner (snap into place). The fasteners 10 are provided with predetermined breaking points 12.

In each of the guide ring segments 9, this is one end, viewed in the circumferential direction 13 with a tongue-shaped extension 14 and the other end 15 with one the tongue-shaped extension 14 of the adjacent guide ring segment 9 adapted Provide recess 16 (Fig.3).

The guide ring 8 has an air pocket on its side facing the projectile tip 7 17 on (Fig.2).

The mode of operation of the invention is discussed below:

After the corresponding cartridge has been ignited, the projectile 1 settles in the caliber tube 4 moving. If the launch acceleration reaches a predetermined value, the tearing the predetermined breaking points 12. The guide ring segments 9 shift in the further Pipe passage of the projectile 1 relative to this to the rear and between the Storey 1 and the inner wall 18 of the barrel 2 clamped. This will be the leading game almost zero and the guide length of the projectile 1 by the axial length of the Guide ring extended.

Due to the engagement of the tongue-shaped extensions 14 in the recesses 16 of the adjacent guide ring segments 9 becomes an axial offset of the guide ring segments 9 prevented against each other.

As soon as the projectile 1 has left the weapon barrel 2, the guide ring segments 9 laterally pushed away from the floor 1 by the dynamic pressure or the air attack forces.

The invention is of course not based on the embodiment described above limited. For example, the guide ring does not necessarily need one deformable plastic. Rather, another is deformable Material such as Lead, brass or copper can be used. A disadvantage of these However, materials are the high densities, because they also accelerate Dead load percentage and the load due to axial forces on the parts to be carried increased. Plastic should therefore because of its low density and low manufacturing costs (Molded part) are preferably used.

LIST OF REFERENCE NUMBERS

1

Bullet

2

barrel

3

cargo space

4

caliber pipe

5

guide region

6

sealing tape

7

nosecone

8th

guide ring

9

Guide ring segment

10

Fasteners

11

groove

12

Breaking point

13

End (guide ring segment)

14

tongue-shaped extension

15

End (guide ring segment)

16

recess

17

air pocket

18

Inner wall (barrel)

Claims (10)

1. A full-calibre projectile with a cylindrical guide area (5) and an ogive-shaped projectile nose (7), having the features:

   a) on the projectile nose (7) there is attached a guide ring (8) segmented in the circumferential direction, with at least two dished guide ring segments (9), the external diameter of which is smaller than the internal diameter of a weapon barrel (2) of the same calibre;

   b) attachment of the guide ring (8) to the projectile (1) is so selected that the guide ring segments (9) become detached from the projectile (1) in the event of a predetermined final acceleration in the corresponding weapon barrel (2) and are pushed by the dynamic pressure axially towards the cylindrical guide area (5) onto the projectile (1) until the guide ring segments (9), which are moving radially apart from one another, come to rest against the internal wall (18) of the weapon barrel (2) and against the projectile (1).
2. A projectile according to claim 1, characterised in that the adjacent guide ring segments (9) are connected together in such a manner that, although they may move outwards radially after detachment from the projectile (1), no axial offset of the guide ring segments (9) relative to one another occurs during this radial displacement.
3. A projectile according to claim 2, characterised in that one of the respectively adjacent guide ring segments (9) comprises at least one tongue-like extension (14) extending circumferentially, which extension (14) engages form-fittingly in a recess (16) in the adjacent guide ring segment (9).
4. A projectile according to claim 2 or claim 3, characterised in that, in the case of each of the guide ring segments (9), the one end (13), viewed in the circumferential direction, is provided with a tongue-like extension (14) and the respective other end (15) is provided with a recess (16) conformed to the tongue-like extension (14) of the adjacent guide ring segment (9).
5. A projectile according to one of claims 1 to 4, characterised in that the guide ring (8) comprises an air pocket (17) on its side facing the projectile nose (7).
6. A projectile according to one of claims 1 to 5, characterised in that the guide ring (8) consists of a deformable material.
7. A projectile according to claim 6, characterised in that the guide ring (8) consists of a deformable plastics material.
8. A projectile according to one of claims 1 to 7, characterised in that the guide ring (8) comprises radially inwardly extending attachment elements (10), which engage frictionally in corresponding radial channels (11) in the projectile (1).
9. A projectile according to claim 8, characterised in that the attachment elements (10) comprise predetermined breaking points (12).
10. A projectile according to one of claims 1 to 7, characterised in that the guide ring (8) is adhered or welded to the projectile (1) or connected thereto by means of encircling retaining strips.

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