DE102012020541A1 - Cartridge and method for its production - Google Patents

Abstract

The invention relates to a cartridge with a consisting of a sleeve casing and a sleeve cover (5) incombustible propellant charge sleeve and a stabilizer stabilized projectile (1) with a solid projectile body (2) and a rear side of the projectile body (2) adjoining tail assembly (3) the transition region between the projectile body (2) and tail unit (3) has a frustoconical outer edge contour (4) tapering towards the rear end of the projectile (1), on which the sleeve cover (5) provided with a corresponding inner edge contour (7) by means of a Adhesive (6) is positively connected. In order to achieve that damage to the propellant charge through the full-caliber bullet is avoided in environmental pollution, the invention proposes to form the adhesive (6) between the projectile (1) and the sleeve cover (5) of the propellant charge tube as a damping element.

Description

The invention relates to a cartridge having a combustible propellant charge sleeve consisting of a sleeve jacket and a sleeve cover and a stator-stabilized projectile with a solid projectile body and a tail unit adjoining the projectile body, wherein the transitional area between projectile body and tail unit tapers to a rear end of the projectile, having frustoconical outer edge contour, at which the provided with a corresponding inner edge contour sleeve cover is positively connected by means of an adhesive. In order to achieve that damage to the propellant charge through the full-caliber bullet is avoided in environmental pollution, the invention proposes to form the adhesive between the projectile and the sleeve cover of the propellant charge tube as a damping element.

In the case of the known cartridges, the mass forces of the relatively heavy projectiles occurring in the context of environmental pollution (vibrations, dropping of the cartridge) must be absorbed essentially by the combustible propellant charge tubes. It is not possible for internal ballistic reasons, to increase the strength of the propellant charge tubes whose wall thickness at a given outer diameter significantly.

The invention has for its object to provide a cartridge of the type mentioned, in which the likelihood that it comes due to environmental pollution to damage the propellant sleeve through the full caliber bullet, compared to comparable known cartridges is substantially reduced. In addition, a method for producing such a cartridge is to be specified.

This object is achieved with respect to the cartridge by the features of claim 1 and in terms of the method by the features of claim 8. Further, particularly advantageous embodiments of the invention disclose the dependent claims.

The invention is based essentially on the idea to arrange a damping element between the projectile and the sleeve cover of the propellant charge sleeve. This is realized in a simple manner by appropriate choice and arrangement of the existing of an elastic material adhesive, which connects the sleeve cover to the floor. At the same time, the adhesive serves as a damping agent. It has proven to be advantageous if a silicone adhesive, preferably a silicone rubber, having a layer thickness of at least 300 microns is used as the adhesive. However, the layer thickness (s) themselves is (are) dependent on the bonded surface, so that the preferred layer thickness (s) is (are) only as a guide and empirical value (s) are (are).

Cartridges with a combustible propellant charge case, in which the respective sleeve cover is connected to a frustoconically tapering, frustoconical edge contour of a fin-stabilized projectile (eg, 120 mm tank bullet) by means of an adhesive, are known from such projectiles. In this case, the stabilizer-stabilized projectiles are sub-caliber balancing projectiles in which the sabot identifies the frustoconical edge contour (cf. DE 197 41 842 A1 ). Due to the detachment behavior of the sabot and thus for the accuracy of the hit thinly applied adhesive silicone layer is used here only as an adhesive. The function of a damping layer can not fulfill them.

The use of adhesives is known as such. So revealed the DE 10 2009 009 772 A1 a non-positive adhesive connection between a segmented receiving device and a driving element. An adhesive bond between knob-shaped extensions with a support wall is in the DE 10 2008 029 397 A1 mentioned. The sticking of serving as a sealing ring portion of a sleeve cover on the projectile sees the DE 10 2008 015 421 A1 in front. On the other hand leads away from these adhesive joints DE 10 2007 037 741 A1 , which proposes to connect the connection between sleeve casing and projectile by friction welding.

To maintain a defined layer thickness of the adhesive - even with the function of a damping means - circumferentially at least or preferably three evenly spaced spacers are provided between the frusto-conical outer edge contour of the projectile and the opposite inner edge contour of the sleeve cover, which are, for example, corresponding rubber sheets Wall thickness acts.

To produce the cartridge according to the invention, the spacers are glued to the frusto-conical inner edge contour of the sleeve cover or on the frustoconical outer edge contour of the projectile. Subsequently, the sleeve cover is then pushed onto the projectile and the remaining space between the sleeve cover and the projectile completely filled with a silicone adhesive. Finally, the silicone adhesive is cured.

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

In the figure, the longitudinal section of a Vollkalibergeschosses is shown, the tail body is connected to the sleeve cover of a (not fully shown) propellant charge sleeve.

The stabilizer stabilized full caliber bullet is with 1 denotes and comprises a solid projectile body 2 and one at the rear of the projectile body 2 subsequent tail unit 3 , In this case, the transition region between projectile body 2 and tail unit 3 a frustoconical outer edge contour tapering towards the rear end of the projectile 4 on.

In the area of this edge contour 4 is the bullet 1 with the sleeve cover 5 a propellant charge case with the help of an adhesive 6 positively connected, wherein the sleeve cover 5 one of the outer edge contour 4 of the projectile 1 corresponding frustoconical inner edge contour 7 has.

According to the invention it is now provided that the adhesive 6 both a frictional connection between sleeve cover 5 and projectile 1 causes as well as the function of a damping element takes over damage to the propellant charge through the full-caliber bullet 1 to avoid environmental pollution.

For this purpose, first on the frustoconical inner edge contour 7 of the sleeve cover 5 or on the frustoconical outer edge contour 4 of the projectile 1 spacers 8th made of rubber with a wall thickness of 800 μm evenly over the circumference of the sleeve cover 5 or the projectile 1 glued.

Then then the sleeve cover 5 on the floor 1 deferred and then the remaining space between the sleeve cover 5 and the projectile 1 completely with a silicone adhesive, preferably a silicone rubber (for example Elastosil E43 Wacker Chemie, Munich), poured out.

Finally, the between sleeve cover 5 and tail unit 3 silicone adhesive 6 hardened.

Elastosil silicone adhesives are one-component adhesives that cure by absorbing moisture - from the air. The hardening time specified for further handling is at least 6 hours. If you use, however, two-component adhesive, z. As Loctite, the specified curing time is at least 50 min. As a result, the curing time can be significantly reduced.

LIST OF REFERENCE NUMBERS

1

Projectile, full-caliber bullet

2

projectile body

3

tail boom

4

outer edge contour

5

casing cover

6

Glue, silicone glue

7

inner edge contour

8th

spacer

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 19741842 A1 [0006]
• DE 102009009772 A1 [0007]
• DE 102008029397 A1 [0007]
• DE 102008015421 A1 [0007]
• DE 102007037741 A1 [0007]

Claims (8)

Cartridge with one of a sleeve jacket and a sleeve cover ( 5 ) existing combustible propellant charge sleeve and a stabilizer-stabilized projectile ( 1 ) with a solid projectile body ( 2 ) and one at the rear of the projectile body ( 2 ) adjoining tail unit ( 3 ), the transition area between projectile bodies ( 2 ) and tail unit ( 3 ) one to the rear end of the projectile ( 1 ) tapered, frusto-conical outer edge contour ( 4 ), on which the with a corresponding inner edge contour ( 7 ) provided sleeve cover ( 5 ) by means of an adhesive ( 6 ) is frictionally connected, characterized in that it is in the adhesive ( 6 ) is an elastic material, wherein the adhesive ( 6 ) simultaneously serves as a damping agent. Cartridge according to claim 1, characterized in that the layer thickness of the adhesive ( 6 ) is between 200-800 μm. Cartridge according to claim 2, characterized in that the layer thickness of the adhesive ( 6 ) is preferably 300 microns. Cartridge according to one of claims 1 to 3, characterized in that to maintain a defined layer thickness of the adhesive ( 6 ) between the frusto-conical outer edge contour ( 4 ) of the projectile ( 1 ) and the opposite inner edge contour ( 7 ) of the sleeve cover ( 5 ) circumferentially at least three uniformly spaced spacers ( 8th ) are provided. Cartridge according to claim 4, characterized in that it is in the spacer parts ( 8th ) is about rubber tiles. Exercise cartridge according to one of claims 1 to 5, characterized in that it is in the adhesive ( 6 ) is a silicone adhesive. Exercise cartridge according to claim 6, characterized in that it is in the silicone adhesive ( 6 ) is silicone rubber. Method for producing the practice cartridge according to one of claims 1 to 7, characterized in that initially on the frustoconical inner edge contour ( 7 ) of the sleeve cover ( 5 ) or on the frustoconical outer edge contour ( 4 ) of the projectile ( 1 ) Spacers ( 8th ) are glued, then that the sleeve cover ( 5 ) on the floor ( 1 ) is pushed and then that the remaining space between the sleeve cover ( 5 ) and the projectile ( 1 ) completely with a silicone adhesive ( 6 ) and then the silicone adhesive ( 6 ) is cured.

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