DE102007045721A1 - Gun barrel for firing spin-stabilized projectiles - Google Patents

Abstract

The invention relates to a gun barrel (1) for firing spin - stabilized projectiles (2) with a guide strip (7) and a rear side behind the guide strip (7) arranged sealing ring (8), wherein the gun barrel (1) has a charge space (3), a drawn Pipe part (4) and arranged between the cargo space (3) and the drawn pipe part (4) transition cone (5). In order to achieve a safe initial seal between bullet (2) and the field-pull profile of the drawn pipe part (4) against hot propellant gases in such a gun barrel (1) and thus to minimize erosion damage to the cargo space side end of the drawn pipe part (4) suggests The invention proposes to arrange a section (6) designed as a smooth tube between the transition cone (5) adjoining the charge space (3) and the drawn tube part (4) whose inner diameter (D0) is greater than or equal to the outer diameter (D1) of the guide strip (7), but approximately equal to the outer diameter of the sealing ring (8) of the projectiles to be fired (2), wherein the length of the smooth pipe section (6) at least the length (L0) of the guide strip and the length (L1) of the sealing ring (8) of the respective projectile (2).

Description

The The invention relates to a gun barrel to shoot spin-stabilized projectiles with a guide band and a rear side behind the leader band arranged sealing ring, with the specified in the preamble of claim 1 Features.

such gun barrels have long been known and usually include a cargo space, a drawn pipe part and a between the cargo space and the drawn pipe part arranged transition cone. For loading a projectile this is through the cargo space pushed so far into the rear area of the drawn pipe part, until the leader band of the projectile at the field-pull profile of the drawn pipe part located. The rear side of the guide band arranged sealing ring, the usual a slightly larger outer diameter has as the guide band, located while still in the transition cone of the gun barrel and should at firing at the beginning of the gas pressure build-up in the cargo space prevent the hot ones Propellant gases between guide band and directly at the transition cone subsequent Pass the field-pull profile of the drawn pipe part.

In However, practice has shown that depending on depth of application of the bullet the sealing ring frequently not on the side walls of the transition cone exactly abuts and at firing a complete initial seal the sealing ring is not ensured. Is not an initial seal given, stream the hot ones Propellant gases between the leader tape and the field-train profile in the region of the transition between the cargo space and high-speed caliber part over and cause severe erosion damage to the cargo compartment side End of the drawn pipe part. These erosion damages then lead to segregation of the barrel.

Of the Invention has for its object to provide a gun barrel, in which a Initial sealing between bullet and the field-pull profile of the pulled Rohrtei les against hot Propellant charge gases is ensured so that erosion damage to the charge side Minimized end of the drawn pipe part.

These The object is achieved by the Characteristics of claim 1 solved.

The Invention is based essentially on the idea between the adjoining the cargo space transition cone and the pulled Pipe part to arrange a section formed as a smooth tube, its inner diameter is larger or equal to the outside diameter of the leader, but slightly smaller than the outside diameter the sealing ring of the projectiles to be fired is, being the length the smooth tube section at least the length of the guide band and the sealing ring (together) of the respective projectile.

As Shot tests have shown behind the leader tape arranged sealing ring when firing in the smooth pipe section for an excellent Initial seal until the leader tape Completely is pressed into the field-tensile profile of the drawn pipe part.

In addition, will through the insertion of the smooth tube, the beginning of the field-tensile profile of the drawn tube part from the known gun barrels Highly susceptible to erosion Area at the transition cone displaced out.

Further Details and advantages of the invention will become apparent from the following explained with reference to figures Embodiment. Show it:

1 the longitudinal section of a gun barrel according to the invention in the region of the transition between the cargo space and drawn pipe part without projectile;

2 one 1 corresponding longitudinal section with a charged bullet and

3 one in 2 with III designated enlarged detail.

In the 1 and 2 is with 1 a gun barrel for firing a spin-stabilized projectile 2 designated. The gun barrel 1 includes a cargo space 3 , a pulled pipe part 4 with a per se known field-train profile and one between the cargo space 3 and the drawn pipe part 4 arranged transition cone 5 ,

According to the invention it is now provided that between which to the cargo space 3 directly adjoining transition cone 5 and the drawn pipe part 4 a trained as a smooth tube section 6 is arranged. Here, the designated D0 inner diameter of this smooth tube section 6 chosen so that it is slightly larger than the outer diameter D1 of the guide band 7 of each projectile to be fired and is approximately equal to the outer diameter of a rear side of the guide band 7 of the projectile 2 arranged sealing ring 8th ,

The length of the smooth pipe section 6 On the other hand, it is chosen such that it is at least the length L0 of the guide band 7 and the length L1 of the sealing ring 8th of the respective projectile 2 equivalent. This will ensure that after loading the bullet 2 the sealing ring 8th within the smooth tube section 6 located and the front of the leader band 7 of the projectile 2 located area 9 the transition between the smooth pipe section 6 and the drawn pipe part 4 at firing against those in the cargo area 3 generated propellant gases is securely sealed.

1

gun barrel

2

bullet

3

cargo space

4

drawn pipe part

5

Transition cone

6

Section, Smooth pipe section

7

guide band

8th

seal

9

Area

D0

Inner diameter (Smooth tube)

D1

outer diameter (Guide band

L0

Length (guide band)

L1

Length (sealing ring)

Claims (1)

Gun barrel for firing spin-stabilized projectiles ( 2 ) with a guide tape ( 7 ) and one rear side behind the guide band ( 7 ) arranged sealing ring ( 8th ), whereby the gun barrel ( 1 ) a cargo space ( 3 ), a drawn pipe part ( 4 ) and one between the cargo space ( 3 ) and the drawn pipe part ( 4 ) arranged transition cone ( 5 ), characterized in that between which to the cargo space ( 3 ) subsequent transition cone ( 5 ) and the drawn pipe part ( 4 ) formed as a smooth tube section ( 6 ) is arranged, the inner diameter (D0) is greater than or equal to the outer diameter (D1) of the guide band ( 7 ), but approximately equal to the outer diameter of the sealing ring ( 8th ) from the gun barrel ( 1 ) to be fired bullets ( 2 ), and that the length of the smooth pipe section ( 6 ) at least the length (L0) of the guide band ( 7 ) and the length (L1) of the sealing ring ( 8th ) of the projectiles to be fired ( 2 ) corresponds. The leader band ( 7 ) and the sealing ring ( 8th ) can be arranged directly behind one another, also in one piece, or the sealing ring ( 8th ) can occur in a separate groove in the projectile ( 2 ) further behind the leader band ( 7 ) are located.