DE102004038938B4 - Powder body for caseless ammunition - Google Patents

Abstract

Powder body for caseless Ammunition for use in automatically firing, in particular small and medium-caliber weapons, which forms a propellant charge, wherein the powder body (10) is wound from a powder foil (12), characterized in that the powder foil (12) has a quadrangular and a trapezoidal or a material integral with it triangular surface section has, so that in the wound state of at least one Powder film (12) through the trapezoidal or triangular surface portion certain conically widening receiving space section (24) and through the quadrangular area section a cylindrical adjacent to the tapered receiving space portion (24) Receiving space portion (26) results, the outside by a tubular cylindrical Winding collar (28) is limited.

Description

The The invention relates to a powder body according to the generic term of claim 1 for caseless ammunition.

The DE 129 328 C refers to a Prüferladung consisting of one or more powder sheets with molded teeth. The teeth had different shapes. This influences the combustion of the powder under pressure.

The FR 1 189 854 discloses a spiral powder charge. This is fixed positively in at least one base plate. The foil-shaped powder charge has knobs for spacing between two winding sections. Furthermore, the powder charge has a central void.

From the US 552,919 a compact powder body emerges. This is wound from celluloid and contains in this recesses for receiving black powder.

Of the Invention is based on the object, a powder body of to create the aforementioned type, the comparatively simple and reasonably priced can be produced, and in which the igniting and burning behavior and the intensity the ignition as desired adjustable or improved.

These Task is in a powder body of The aforementioned type according to the invention by the features of claims 1 or 2 solved.

preferred Training or further developments of the powder body according to the invention are characterized in the subclaims.

With the shape of the invention a powder film, the internal structure of the powder body is selectable. So can the powder body a consistent wound section as well as one for receiving a ignition element or a projectile of suitable section. Furthermore, it is inside the powder body a conically widening receiving space section possible, so that in the Interior of the powder body Additional charges arranged in the form of another wound propellant charge powder body become. This additional powder body may consist of another type of propellant powder, so that in a simple way a targeted propellant charge can be realized.

When has appropriate it turned out, if the / each powder film at least partially with holes is / are trained. These holes can be arranged in a specific grid grid. In this grid it can be a regular or around an irregular grid act. The surface end section the winding should be hole-free, i. the / any powder foil should on the outside Winding end without holes be formed so that the finished bobbin a hole-free closed Having outer circumferential surface.

The Number and / or the shape and / or size of the holes can be the desired Intensity of ignition in the radial direction of the wound propellant powder body accordingly be dimensioned.

As already mentioned It has been preferred that the outer portion of the / each powder foil is / are used for Forming a smooth outer circumferential surface of the wound Propellant charge powder body without holes is trained. On such a smooth outer surface can easily be provided a sealing layer. This sealing layer can, for example. Of be formed of a metal coating. In the metal coating it can be e.g. to trade a metal vapor. This is in easy way a moisture-proof and dirt-repellent surface of the powder body realizable.

at the powder body according to the invention can the / each powder film from the beginning of the winding to the winding end a constant Have wall thickness. Likewise, it is possible that the / each powder film of Winding beginning to the winding end has an increasing wall thickness. The outside Winding end of each powder film may be thin, i.e., thin. leak out like a blade, around corners and edges on the outer surface of the wound powder body to avoid.

The Number, shape and size in the / each Powder film formed holes determines the intensity the ignition of the powder body in the radial direction of the wound powder body and allows a Targeted design of the burn-up surface and burn-up.

Around between the individual mutually adjacent turns of the winding of the powder body To realize distance ignition channels, it is useful if the / each powder film is at least partially surface-structured. These surface structuring The / each powder film may, for example, be formed by knobs. Desgleiche For example, a corrugated powder foil is applicable to realize pitch ignition channels.

The / each powder film may be at least partially coated with an igniter boost amplifier be to evenly or faster the film surface for lighting and burning off.

The / each Powder film may be at least partially phlegmatized to the Burning defined to control.

At the axially spaced end faces of the wound Treibiadungs powder body can be attached to its sealing in each case a sealing powder film. This sealing powder film has preferably a relatively large one Wall thickness up. The attachment of the respective sealing powder film can by gluing, by plugging, o. The like. Made to a wound powder body to realize with a hermetically sealed outer surface.

The / each wound powder film can be partially bonded to solidify the propellant charge powder body be.

Further Details, advantages and features will be apparent from the following Description of in the drawing schematically and not to scale illustrated embodiments the wrapped invention powder body or a powder film for such a wound powder body.

It demonstrate:

1 longitudinally cut longitudinally a first formation of the powder body for caseless ammunition,

2 a longitudinal section of a second embodiment of the powder body for caseless ammunition, and

3 In sections, a powder film for a powder body, as in 1 is illustrated schematically.

1 shows a formation of a powder body 10 for caseless ammunition, for use in automatic firing, especially small and medium caliber weapons. The powder body 10 forms a propellant charge. The propellant charge powder body 10 has at least one powder film 12 on, around a central powder body axis 14 is wound. Such a powder foil 12 is in 3 Sectionally illustrated in the stretched original state schematically. This powder foil 12 has two spaced quadrilateral sections 16 and 18 with different widths b1 and b2 and between these two square area sections 16 and 18 a trapezoidal transition surface section 20 on, so that in the wound state of the powder film 12 as he is in 1 drawn longitudinally cut longitudinally, one by the square surface portion of small width b1 certain, axially correspondingly short, central cylindrical winding core section 22 results in the axial one through the transition surface portion 20 certain, conically widening receiving space section 24 connects to the axial one through the quadrangular surface section 18 the width b2 certain cylindrical receiving space section 26 followed. The cylindrical receiving space section 26 is on the outside by a tubular cylindrical winding coil 28 limited, which is a combustible ignition element 30 encloses.

At the end faces that are axially separated from each other 32 of the wound propellant powder body 10 is in each case a sealing powder film for its sealing 34 attached.

The wound powder foil 12 is for solidification of the propellant charge powder body 10 partially glued.

The 3 illustrates in stretched original condition a powder foil 12 that with holes 36 is trained. The holes 36 of which only a few are drawn are above the surface sections 16 and 20 and over a certain portion of the surface portion 18 distributed. The winding end section 38 of the quadrilateral area section 18 is formed without holes. Through this hole-free Wickelendabschnitt 38 This results in a smooth outer surface 40 of the propellant powder body 10 ,

To an unabated smooth outer surface 40 of the propellant powder body 10 To realize, it is useful if the outside winding end edge 42 (S, 3 ) is thin, ie tapering outgoing, is formed.

2 illustrates schematically one side longitudinally cut an embodiment of the powder body 10 in which a rectangular powder foil 12 with a very large "length to width" ratio applies to the application, so that in the wound state, a central cylindrical receiving space 44 for a projectile body 46 and for a combustible ignition element 30 results.

With the reference number 32 is also in 2 the respective end face of the wound propellant charge powder body 10 designated. Each face 32 is through a sealing powder foil 34 covered and sealed.

Of course, the invention is not limited to the embodiments of the wound propellant powder shown schematically in the drawings body 10 but it is determined by the following claims.

10

powder body

12

Powder foil (from 10 )

14

Powder body axis (from 10 )

16

Square area section (from 12 )

18

Square area section (from 12 )

20

Trapezoidal transition surface section (from 10 )

22

Winding core section (from 10 )

24

Conically enlarged reception room section (from 10 )

26

Cylindrical reception room section (from 10 )

28

Tubular cylindrical winding collar (from 10 )

30

Ignition element (for 10 )

32

End faces (from 10 )

34

Sealing powder foil (on 32 )

36

Holes (in 12 )

38

Winding end section (from 12 )

40

Smooth outer surface (from 10 )

42

Outer wrap end edge (from 12 )

44

Central reception room (from 10 )

46

projectile body

Claims (10)

A caseless ammunition powder body for use in automatically firing, in particular small and medium-caliber weapons, which forms a propellant charge, the powder body ( 10 ) from a powder foil ( 12 ), characterized in that the powder foil ( 12 ) has a quadrangular and a material-integrally subsequent trapezoidal or triangular surface portion, so that in the wound state of the at least one powder film ( 12 ) a conically widening receiving space section (FIG. 3) defined by the trapezoidal or triangular surface section (FIG. 24 ) and through the quadrangular surface section to the conical receiving space section ( 24 ) axially adjoining cylindrical receiving space section ( 26 ), which on the outside by a tubular cylindrical winding collar ( 28 ) is limited. Powder body for caseless ammunition for use in automatic firing, in particular small and medium-caliber weapons, which forms a propellant charge, characterized in that the one powder film ( 12 ) two spaced quadrilateral sections (FIG. 16 . 18 ) of different widths (b1, b2) and between these a trapezoidal transition surface section ( 20 ), so that in the wound state the at least one powder foil ( 12 ) through the quadrangular surface section ( 16 ) small width (b1) certain, axially short cylindrical central core section ( 22 ) at the axially one through the transition surface portion ( 20 ) certain, conically widening receiving space section ( 24 ) and at this axially through the quadrangular surface section ( 18 ) comparatively large width (b2) certain cylindrical receiving space section (b2) 26 ), which on the outside by a tubular cylindrical winding collar ( 28 ) is limited. Powder body according to claim 1 or 2, characterized in that the propellant charge powder body ( 10 ) at least one powder film ( 12 ) having. Powder body according to claim 1 or 2, characterized in that the propellant charge powder body ( 10 ) at least two powder foils ( 12 ), which has mutually different wall thicknesses and / or structures and / or energy contents. Powder body according to one of claims 1 or 2, characterized in that the receiving space sections ( 24 . 26 . 44 ) for receiving a further wound propellant powder body ( 10 ) is provided with a different type of propellant charge powder. Powder body according to claim 4, characterized in that the at least one powder film ( 12 ) at least partially with holes ( 36 ) is trained. Powder body according to one of claims 1 or 2, characterized in that a winding section ( 38 ) of the at least one powder film ( 12 ) to form a smooth outer surface ( 40 ) of the propellant charge powder body ( 10 ) is formed without holes. Powder body according to claim 7, characterized in that the outer circumferential surface ( 40 ) is provided with a sealing layer. Powder body according to one of claims 1 or 2, characterized in that the at least one powder film ( 12 ) for forming ignition channels between adjacent turns of the powder foil ( 12 ) is at least partially surface-structured. Powder body according to one of claims 1 or 2, characterized in that on the axially mutually remote end faces ( 32 ) of the wound propellant powder body ( 10 ) in each case a sealing powder film ( 34 ) is attached.