DE102012005741A1 - 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). In order to avoid an outside passing of the propellant charge gases on the training projectile (1) within the weapon barrel, a sealing system (10) is provided in the region of the solid head part (3) of the training projectile (1), which has a sealing ring (11) acted upon by a wedge ring (12). includes. Both the axially displaceable wedge ring (12) and the sealing ring (11) are arranged in an annular groove (13) located in the rear region of the head part (3). In this case, in the weft direction of the exercise projectile (1) in front of the wedge ring (12) arranged sealing ring (11) has a rear conical inner cavity (14) into which the front portion of the wedge ring (12) positively and positively engages, such that at an axial pressurization of the wedge ring (12) thereof is axially displaced and acts as a sealing lip outer side wall portion (15) of the conical inner cavity (14) of the sealing ring (11) radially against the inner wall of the gun barrel.

Description

The invention relates to a ladder-stabilized full-caliber practice projectile which can be fired from a weapon barrel and which has a solid head part and a tubular tail body adjoining the head end on the rear side, the training projectile being provided peripherally with a sealing system.

Such a full caliber training projectile is out of 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 well-known full-caliber practice projectiles, which usually comprise a head part with a subsequent projectile casing and a shaft with flange assembly adjoining the projectile casing, the projectile projectile itself is designed as a tubular tail body, so that a separate shaft 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 Treibladungagase between the inner wall of the gun barrel and the outer wall of the training projectile can flow past this, is about the outside of a known 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 training 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 training projectile internal pressure. To avoid an outside bypassing the propellant charge gases on the entire exercise floor within the gun barrel, a sealing system in the region of the massive head portion of the exercise projectile is arranged, which comprises a sealing ring acted upon by a wedge ring. Both the axially displaceable wedge ring and the sealing ring are arranged in an annular region situated in the rear region of the head part or in a region of the tail body which overlaps the head part. In this case, arranged in the weft direction of the exercise projectile in front of the wedge ring sealing ring has a rear conical inner cavity, in which the front portion of the wedge ring frictionally and positively engages, such that when an axial pressurization of the wedge ring this is moved axially and acting as a sealing lip outer Side wall portion of the conical inner cavity of the sealing ring radially presses against the inner wall of the gun barrel.

To ensure that the launch of the training projectile within the gun barrel the outer side of the tail body is beaufachlagt from the propellant charge gases, it is provided that the tubular tail body spaced apart, knob-shaped guide elements over which the tail body is supported on the gun barrel, wherein the knob-shaped guide elements form a guide ring arranged around the tail body, and wherein the propellant gases can flow between adjacent guide elements.

The sealing ring and / or the wedge ring consist / 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 3 shows the longitudinal section through a full-caliber invention comprising a head part and a tubular tail body. Übungsgsschoss, wherein on the outside of the head part, a sealing system is arranged;

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

3 an enlarged view of the head part of in 1 shown exercise floor.

In 1 is with 1 designates a leitwerkstabilisiertes full-caliber practice bullet fired from a gun barrel, not shown. 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 Sand a back to the headboard 3 subsequent tubular tail 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 spaced, nopper-shaped guide elements 8th ( 2 ) 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, 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 shot 1 ordered.

In this sealing system 10 engage, seen in the weft direction, front, for example made of plastic existing sealing ring 11 and a rear side of the sealing ring 11 impinging wedge ring 12 in a common ring groove 13 in the rear area of the headboard 3 one. It is for ease of assembly, the annular groove 13 on the rear side through the front end of the tail body 5 limited.

The sealing ring 11 has a rear cone-shaped interior cavity 14 ( 3 ), in which the front portion of the wedge ring 12 engages positively and positively, such that when axial pressurization of the wedge ring 12 this shifts axially towards the projectile tip and acting as a sealing lip outer side wall area 15 of the conical interior cavity 14 of the sealing ring 11 radially presses against the inner wall of the gun barrel, not shown.

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 part 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

wedge ring

13

ring groove

14

internal cavity

15

Sidewall region

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 (3)

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 ), b) the sealing system ( 10 ) is in the area of the head part ( 3 ) of the training projectile ( 1 ), wherein the sealing system ( 10 ) one of a wedge ring ( 12 ) on the rear side acted upon sealing ring ( 11 ) and wherein the wedge ring ( 12 ) and the sealing ring ( 11 ) in a common annular groove ( 13 ) in the rear region of the head part ( 3 ) or in an area of the headboard ( 3 ) overlaying tail body ( 5 ), and c) the sealing ring ( 11 ) has a rear conical inner cavity ( 14 ), in which the front portion of the wedge ring ( 12 ) positively and positively engages, such that upon axial pressurization of the wedge ring ( 12 ) is displaced axially and acting as a sealing lip outer side wall region ( 15 ) of the conical interior cavity ( 14 ) of the sealing ring ( 11 ) presses radially against the inner wall of the gun barrel. Exercise projectile according to claim 1 or 2, characterized in that the tubular tail body ( 5 ) spaced apart, knob-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 ) and / or the wedge ring ( 12 ) consist of plastic / consists.

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