DE102015004306A1 - A smoke - Google Patents

Abstract

Smoke projectile with a pyrotechnic active charge, wherein the active charge is received in a plastic sheath, wherein for separating the plastic sheath at least one pyrotechnic separation means is provided, wherein the separating means (13) on the outside of the plastic sheath (11) is arranged.

Description

The invention relates to a smoke throwing body with a pyrotechnic active charge, wherein the active charge is received in a plastic casing, wherein at least one pyrotechnic separation means is provided for separating the plastic casing.

For the protection of armored and unarmoured vehicles, smoke projectiles are used, which are fired in the case of a threat situation. The smoke missile comprises a pyrotechnic active charge which, when lit, emits a mist which protects the vehicle or vehicles to be protected against detection, detection and target tracking and thus against a missile threat. The nebula emits in the infrared spectral range and is opaque in the visual spectral range. Since the threatening missiles approach at speeds of 200 to 600 m / s, after their detection, a nebulization must take place very quickly.

Such a misting body is made, for example DE 10 2006 008 309 B4 known. The active charge used there is welded in a plastic sheath in the form of a plastic film. To separate this plastic film self-adhesive black powder films, so-called tapematch, are provided which are arranged around the active charge around, so are between effective charge and plastic film. This plastic film is usually in a shrinking process, comprising the effective charge attached.

For separating the plastic film, it is necessary to ignite the black powder films, for which purpose they are to be connected to an ignition means. This is complicated to realize because of the arrangement of the black powder films around the effective charge, since the ignition means is arranged outside the plastic casing. In addition, the black powder films are also thermally stressed during the shrinking of the plastic jacket, which may affect their functionality.

The invention is therefore based on the problem of specifying a smoke throwing body, which is improved in contrast.

To solve this problem, it is provided according to the invention in a smoke throwing device of the type mentioned in the introduction that the separating means is arranged on the outside of the plastic casing.

Unlike in the prior art customary, the at least one separation means on the outside of the plastic sheath, which may be, for example, a plastic film, attached, that is, the plastic sheath is attached first, after which the release agent is positioned first. Thus, this is not affected or burdened by the attachment process of the plastic coating, so for example, the shrinking, since the release agent is attached later. In addition, the outside arrangement of the separating means makes it easier to connect it to the ignition means, as which, as will be discussed below, for example, an explosive ejection charge driving the active charge can be used.

Preferably, a plurality of circumferentially spaced separation means are arranged on the outside of the plastic casing. For example, can be arranged on the usually cylindrical outer side four offset by 90 ° separating means, that is, that the plastic casing is separated at four positions simultaneously based on the outer cylindrical surface.

The or each resolving agent used may be formed as a coating or as a release film. A pyrotechnic ignitable coating is applied to the plastic coating, for example by brushing or printing or the like. Preferably, a release film, which is preferably adhered to the plastic jacket, is used. This film can be easily applied, especially if it is self-adhesive.

Regardless of whether a coating or a release liner is used, the particular resolving agent used should be based on black powder. That is, either a black powder-based coating or a black powder-separating film, a so-called tapematch, is preferably used.

The smoke grenade usually has a housing in which the active charge is added together with plastic sheathing. In order to drive the active charge out of the housing, an ignitable ejection charge is provided on the housing side, the or each separating means, in particular separating film, being arranged on the active charge in such a way that it can be ignited by the igniting ejection charge. Due to the fact that the separating means or preferably the separating film is arranged on the outside of the plastic casing, it or it is much easier to bring into the effective range of the igniting ejection charge. The ignition happens because the hot particles that are created during the ignition are directly on the outside Can meet separating film, so that it is immediately ignitable. This is particularly improved if, as is also provided according to the invention, the ejection charge is arranged at the bottom of the housing, and the or the separating means along the underside of the active charge or the plastic casing, the ejection charge opposite, are guided. This means that the separating means, ie the separating film, is not only arranged on the cylindrical outer side of the plastic casing, but also in the region of the underside, at which either the active charge is exposed or which is also edged over the plastic casing. The underside of the discharge charge is directly opposite, so that igniting the ejection charge directly or the separating means are ignited.

Further advantages and details of the invention will become apparent from the embodiment described below and with reference to the drawings. Showing:

1 a schematic diagram in section through a smoke throwing body according to the invention, and

2 a perspective view of the welded in a plastic sheath active body together with separating means attached thereto.

1 shows a smoke throwing body according to the invention 1 with a pyrotechnic active charge 2 in a hollow cylindrical housing 3 is arranged. The pyrotechnic active charge 2 serves to generate a fog emitting in the infrared spectral range and opaque in the visual spectral range. It can be formed by means of a plurality of individual, similar active elements and mass elements, which are arranged in a disk or plate stacked together. But it is also conceivable, as effective cargo 2 to use two different active bodies of different materials. The one, possibly also a plurality of active elements and mass elements comprehensive active body causes a temporally fast fog construction, while the other, optionally also several active elements and mass elements comprehensive active body has a long burning time.

The Wirkladung 2 is, as will be discussed below, in a plastic coating, preferably in the form of a plastic film, wrapped or welded. This plastic casing is, as will be discussed below, separable when firing the active charge.

To shoot the Wirkladung is a discharge charge 4 provided in the area of the ground 5 of the housing 3 is arranged and a corresponding recess of a floor plate arranged there 6 is included. Their ignition takes place via control electronics 7 ,

For ejection is in a case back 5 arranged gas pressure disk 8th a hole 9 formed over the pressure generated on ignition of the ejection charge on the active charge 2 which is then transferred from the over a cap 10 closed housing 3 is expelled.

2 shows the Wirkladung 2 in a plastic jacket 11 , here in the form of a shrunk-on plastic film. This plastic casing 11 surrounds in the illustrated embodiment, the effective charge 2 on all sides, ie in the cylindrical outer surface as well as the top and bottom surface, wherein 2 a look at the floor area 12 shows. This floor area 12 is in the mounting position of the hole 9 arranged opposite. Alternatively, the active charge in the area of the top and bottom surfaces can also be partially exposed.

On the outside of the plastic jacket 11 In the example shown, several pyrotechnic separation agents 13 arranged here as a resolving agent here self-adhesive black powder Trennfolfolie 14 be used. These films are band-shaped and can, as self-adhesive, over the appropriate adhesive coating readily on the plastic coating 11 glued on. They extend axially along the outside of the plastic casing and are guided so that they are at least on the bottom surface 1 cross. In the assembly position is the crossing area 15 opposite the hole 9 , This results in igniting the discharge charge 4 the resulting, hot particles directly on the release films 14 in the crossing area 15 meet, so the release films 14 be ignited immediately and directly, and consequently to an immediate separation of the plastic sheath 11 in the area of the soil 12 as well as coming along the lateral surface. If the top surface is also covered with plastic film, the release films will intersect 14 also in the opposite ceiling area, so that there is the separation.

The burning black powder of the black powder separating films 14 then ignites the Wirkladung 2 itself, which as described may consist of only one active mass or one effective mass type, but also of several individual, possibly also different fog tablets and active mass blocks. This means that on the one hand an immediate and safe separation of the plastic casing is ensured, moreover but also an immediate ignition of the active body itself.

Another advantage of the external release film 14 Furthermore, it is that they eject the in the plastic casing 11 received active charge from the housing 3 improved. During ejection, the active charge still received in the plastic sheath slides on the release liners along the inside wall of the housing, resulting in a reduction of the friction between the housing 3 and the Wirkladung leads.

LIST OF REFERENCE NUMBERS

1

A smoke

2

active charge

3

hollow cylindrical housing

4

ejection charge

5

ground

6

baseplate

7

control electronics

8th

Gas pressure washer

9

drilling

10

cap

11

Plastic sheathing

12

floor area

13

severing

14

Auftrennfolie

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 102006008309 B4 [0003]

Claims (8)

Smoke projectile with a pyrotechnic active charge, wherein the active charge is received in a plastic casing, wherein for separating the plastic casing at least one pyrotechnic separating agent is provided, characterized in that the separating means ( 13 ) on the outside of the plastic casing ( 11 ) is arranged. Smoke throwing device according to claim 1, characterized in that a plurality of circumferentially spaced separation means ( 13 ) on the outside of the plastic casing ( 11 ) are arranged. Smoke throwing body according to claim 1 or 2, characterized in that the or each separating means ( 13 ) as a coating or as a release film ( 14 ) is trained. Smoke throwing device according to claim 3, characterized in that the one or more severing sheets ( 14 ) on the plastic casing ( 11 ) are glued. Smoke-throwing body according to claim 4, characterized in that the one or more severing sheets ( 14 ) are self-adhesive. Smoke-throwing body according to one of claims 3 to 5, characterized in that a coating based on black powder or a black powder separating film ( 14 ) is used. Smoke throwing body according to one of the preceding claims, characterized in that a housing ( 3 ) is provided, in which the active charge ( 2 ) together with plastic coating ( 11 ) on which housing ( 3 ) one the Wirkladung ( 2 ) expelling ignitable discharge charge ( 4 ), wherein the or each separating agent ( 13 ), in particular separation film ( 14 ) is arranged so as to be exposed by the firing ejection charge ( 4 ) is ignitable. Smoke projectile according to claim 7, characterized in that the ejection charge ( 4 ) at the bottom of the housing ( 3 ), wherein the separating agent or agents ( 13 ), in particular separation film ( 14 ) along the bottom of the active charge ( 2 ) or the plastic casing ( 11 ), the ejection charge ( 4 ) are guided opposite one another.

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