DE102012005743A1 - Tail stabilized full caliber training projectile - Google Patents

Abstract

In order to ensure the impact resistance of a full-caliber training projectile (1) comprising a solid head part (3) and a tubular tail body (5) adjoining the head part (3) at a low cost, the invention proposes that the tail body (5 ) in such a way that the firing charge gases formed during the launching of the training projectile (1) also act on the outer side (6) of the side wall (7) of the tubular tail body (5). To avoid an outside bypassing the propellant charge gases on the practice floor (1) within the gun barrel, a sealing system (10) in the region of the solid head part (3) of the training projectile (1) is provided, wherein a sealing ring (11) in a preferably formed as a conical annular groove (12) in the rear region of the head part (3) engages.

Description

The invention relates to a leitwerkstablilsiertes full-caliber practice projectile can be fired from a gun barrel with a solid headboard and a tubular Leitwerkskörper subsequent to the headboard, the training projectile is circumferentially provided with a sealing system.

Such a full-caliber practice bullet is from the document DE 10 2010 034 33 A1 known. It is a large caliber, for example, from a tank cannon with the caliber 120 mm shootable training projectile. In contrast to comparable known full-caliber practice projectiles, which usually comprise a head part with an adjoining projectile casing and a shaft with fin assembly adjoining the projectile casing, the projectile casing itself is designed as a tubular fin body in the aforementioned training projectile, so that a separate shank may be omitted with attached fin assembly. The resulting at the launch of the practice projectile projectile charge gases reach in this full-caliber training projectile in the interior of the tubular tail body and act to accelerate the practice projectile on the rear-side region of the headboard, which limits the interior geschosskopfseitig.

To ensure that when shooting down in the DE 10 2010 034 33 A1 disclosed training projectile no propellant gases between the inner wall of the gun barrel and the outer wall of the practice projectile can flow past this, is about the outside of a sealing system arranged in the rear third of the tubular portion of the tail body. This consists essentially of a recessed into the outer surface of the tail body annular groove into which engages an existing plastic sealing ring.

When launching large-caliber practice bullets, a high internal pressure of the propellant charge gases occurs within the tubular tail body, which strongly acts on the side wall of the tubular tail body, in particular in the region between the sealing system and the head part. This can have an effect on the firing resistance, in particular when using a lighter body of a light metal.

The invention has for its object to provide a full-caliber practice bullet of the type mentioned, the firing resistance is ensured in a cost effective manner.

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

The invention is essentially based on the idea to dispense with a sealing system in the tubular portion of the tail body, so that the propellant gases formed at the launch of the practice projectile also act on the outside of the side wall of the tubular tail body and thus acting on the outside of the tubular tail body pressure the counteracts the acting on the inside of the side wall of the exercise projectile internal pressure. To avoid an outside passing the propellant charge gases on the training projectile within the gun barrel, a sealing system is arranged in the region of the massive head part of the training projectile, wherein a sealing ring engages in an annular groove in the rear-side region of the head part or in a region of the tail body overlapping the head part.

Preferably, the sealing system is a conical seal, wherein the annular groove of the sealing system has a greater width than the sealing ring, so that the sealing ring is axially displaceable towards the projectile tip when pressurized by the propellant gases.

To ensure that the launch of the training projectile within the gun barrel, the outside of the tail body is acted upon by the propellant charge gases, it is provided that the tubular tail body spaced apart, knob-shaped guide elements, via which the tail body is supported on the gun barrel, wherein the knob-shaped guide elements form a Fürungsring arranged around the tail body, and wherein the propellant charge gases can flow between adjacent guide elements.

The sealing ring is preferably made of plastic.

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 through an inventive, consisting of a head part and a tubular Leitwerkskörper full-caliber training projectile, wherein on the outside of the head part, a sealing system is arranged, which comprises an annular groove and a sealing ring;

2 the enlarged view of a cross section through the in 1 illustrated training projectile along the there designated II-II cutting line.

In 1 is with 1 one from a gun barrel, not shown occlusive superscript stabilized full caliber practice bullet called. With the practice floor 1 is a sleeve cover 2 connected, the connection of the training projectile 1 forms with a propellant charge containing, not shown, the propellant charge.

The practice floor 1 includes a solid headboard 3 with a rear side arranged tracer body recording 4 and a back to the headboard 3 Anechließenden tubular fin body 5 ,

The tubular tail body 5 is inventively designed such that when launching the practice projectile 1 resulting propellant gases on the outside 6 the side wall 7 of the tubular tail body 5 Act.

For this purpose, the tail body 5 formed unterkalibrig and is supported by mutually beabetandete, knob-shaped guide elements 9 on the inner wall of the gun barrel, not shown. Here are the knob-shaped guide elements 8th such around the tail body 5 arranged around that they have a guide ring 9 form ( 2 ), wherein the propellant gases between adjacent guide elements 8th can flow through.

To avoid the propellant gases inside the gun barrel on the outside of the entire practice floor 1 can flow past, is a sealing system 10 in the area of the massive headboard 3 of the practice floor 1 arranged.

It engages a plastic existing sealing ring 11 in a circumferential groove-shaped recess (annular groove) 12 in the rear area of the headboard 3 a, wherein for ease of installation of the sealing system, the annular groove 12 the rear side through the front end face of the tail body 5 is limited.

In the sealing system 10 it is a conical seal, wherein the width B of the annular groove 12 is greater than the width b of the sealing ring 11 so that the sealing ring 11 at a pressurization by the propellant gases within the annular groove 12 axially displaceable towards the projectile tip. Due to the conical configuration of the groove bottom of the annular groove 12 causes the axial displacement of the sealing ring 11 also a radial expansion of the sealing ring 11 , making it a permanent statement between the practice floor 1 and the inner wall of the barrel comes.

The sealing ring 11 can either be on the headboard 3 pressed or sprayed on and then turned off to measure and / or without twisting directly on the headboard 3 be raised.

Of course, the invention is not limited to the embodiment described above. For example, the massive headboard does not necessarily have to be a solid body. Rather, it can also be a hollow body, if the wall thickness and / or the material (steel, etc.) of the head part are chosen such that the propellant charge gases cause no or no significant deformation of the head part when shooting in the barrel.

Furthermore, the annular groove of the sealing system need not necessarily be arranged on the tail body itself, but it can also be provided that, in a training projectile, in which the tail body engages over the front side of the head part (cf. 1 ), the annular groove is arranged in this wall region of the tail body.

LIST OF REFERENCE NUMBERS

1

Full-caliber practice floor, training floor

2

casing cover

3

headboard

4

Tracer body shot

5

tail body

6

outside

7

Side wall

8th

guide element

9

guide ring

10

sealing system

11

sealing ring

12

groove-shaped recess, annular groove

B

Width of the groove-shaped recess

b

Width of the sealing ring

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10201003433 A1 [0002, 0003]

Claims (4)

Can be fired from a gun barrel stabilized full-caliber training projectile ( 1 ) with a solid headboard ( 3 ) and one at the rear of the headboard ( 3 ) subsequent tubular tail body ( 5 ), whereby the practice floor ( 1 ) peripherally with a sealing system ( 10 ), having the features: a) the tubular tail body ( 5 ) is designed so that the at the launch of the practice projectile ( 1 ) formed propellant gases on the outside ( 6 ) of the side wall ( 7 ) of the tubular tail body ( 5 ), and b) the sealing system ( 10 ) is in the area of the head part ( 3 ) of the training projectile ( 1 ), wherein a sealing ring ( 11 ) in an annular groove ( 12 ) in the rear region of the head part ( 3 ) or in an area of the headboard ( 3 ) overlaying tail body ( 5 ) intervenes. Exercise projectile according to claim 1, characterized in that it is in the sealing system ( 10 ) is a cone seal, wherein the annular groove ( 12 ) has a greater width than the sealing ring ( 11 ), so that the sealing ring ( 11 ) upon pressurization by the propellant gases within the annular groove ( 12 ) Is axially displaceable towards the projectile tip. Exercise projectile according to claim 1 or 2, characterized in that the tubular tail body ( 5 ) spaced apart, nub-shaped guide elements ( 8th ), one around the tail body ( 5 ) arranged around guide ring ( 9 ) form. Exercise projectile according to one of claims 1 to 3, characterized in that the sealing ring ( 11 ) consists of plastic.

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