Disc shaped modular propellant charge

The invention relates to a disk-shaped propellant charge module constructed from a several such modules composable layered propellant.

An increase in the power of large-caliber tank guns normally requires an increase the loading density of the propellant charge powder. is With the increase in charge density However, a homogeneous lighting of the entire charge more problematic because remaining in the cargo space for the spread of flames or hot Plasmas are too low. Non-homogeneous ignition, however, tend to form asymmetric pressure waves in the cargo space lead, which can destroy the weapon.

From DE 39 23 046 A1, a ring tablet for gas generators is known which particular is used for air-bag generators. To increase the optimum conversion rate , the respective tablet a central axial ignition channel on, from the is arranged on the top and bottom of the tablet radial firing channels to the tablet edge towards extending.

The invention is based on the object of providing a propellant charge module of the aforementioned specify type, having a uniform and symmetrical ignition of the propellant charge a cartridge with increased loading density (> 1.2 g / cm³) Ensured.

This object is achieved by the features of claim 1. Further, particularly advantageous embodiments of the invention disclosed in the subclaims.

The invention is essentially based on the idea that the propellant charge module with at least three, preferably six, equally spaced on a circle lying axial Priming channels and at least three, preferably six also in the interior of the Propellant module to its outer surface extending radial firing cues to provided, wherein each of the radial firing channels at least one of the axial firing cues cuts. Preferably, the center of the circle on which the axial ignition channels are formed by the center axis of the propellant charge modules.

To obtain a good ignition by the total propellant charge, the individual Propellant modules are stacked in such a way in the corresponding cartridge that its axial Ignition channels form a continuous ignition channel. provide the radial ignition channels for better propagation of the flame or plasma (in a plasma ignition) in total cargo space. In addition, the radial firing cues make possible breaking points . These predetermined breaking points allow the powder disks represents an uncongested Passage of the charge through the transition area from the cargo space for the gun barrel, since the radial firing cues a defined structure of the corresponding powder-fragments is achieved.

As it has proven advantageous if the propellant modules in each case a fluted having surface so that in the finished propellant charge between adjacent modules even a small distance for the lateral spread of the flames throughout the cargo space remains.

To increase the progressivity of the erosion, the use of multi-perforated Powder discs found to be appropriate, the number of perforations per the desired progressivity or wall thickness of the propellant charge modules, between ca. should be approximately 1000 and 4000th The perforations may in extruding the powder be introduced or through holes in a CNC machine.

Further details and advantages of the invention will become apparent from the following reference figures mentioned embodiments. Show it:<sl><li>Fig.1 shows the longitudinal section of a cartridge with a sabot projectile shown schematically and one composed of propellant charge modules invention Propellant charge;</li><li>2 is a plan view of a magnified shown propellant charge module according to the invention;</li><li>3 shows a cross section of the propellant charge module shown in Figure 2 along the there with III-III section line denoted and</li><li>4 is a greatly enlarged view of the surface of the magnifying glass shown in Fig.2 Propellant charge module.</li></sl>

In Fig.1 numeral 1 designates a cartridge, the one filled with a propellant charge 2 cartridge case 3 and a sabot projectile 4 with the cartridge case 3 towering Bullet base 5 comprises. The propellant charge 2 consists essentially of a plurality adjacently stacked, disc-shaped constructed propellant modules 6 together. In the area of ​​the bullet Hecke 5, the propellant modules 6 each have a central Recess 7, is inserted in which additionally loose bulk powder eighth

The individual propellant charge modules 6 are matched to the propellant charge sleeve 3 and have for example, an outer diameter of about 150 mm and a width of 5 to 20 mm. they have six equally each on a symmetry to the center axis 100 of the Propellant Modules 6 liegenden- circle arranged axial ignition channels 9 (Fig.2) and six lying in the interior of the propellant charge modules 6 radial firing channels 10 (Figure 3) on which extend up to the outer surface 11 of the respective propellant module. 6 Here each radial firing channel cuts 10 two axial ignition channels 9. The propellant modules 6 are stacked such in the propellant charge sleeve 3, that the axial ignition channels 9 a continuous ignition channel 12 form (Fig.1).

serve the radial firing channels 10 both for better flame front and widening Firing up the powder disks defined 6 from the inside as well as predetermined breaking points to to produce fragments which a congestion-free passage from the cargo space of the corresponding allow gun in the gun barrel.

The outer surface 11 of the propellant charge modules 6 is slightly corrugated, so that between adjacent propellant charge modules 6, there remains a gap-shaped interspace, by which, after ignition of the propellant charge 2 is a lateral extent of not from the can be carried out lighter flames coming shown.

To increase the progressivity of the propellant charge 2 is for the individual Propellant charge modules 6 to multi perforated powder discs, eg 3000 perforations 13 (Figure 4) are present per propellant Lesson 6.

LIST OF REFERENCE NUMBERS

<dl tsize="2" compact="compact"><dt>1</dt><dd>cartridge</dd><dt>2</dt><dd>propellant</dd><dt>3</dt><dd>Cartridge case</dd><dt>4</dt><dd>Sabot projectile</dd><dt>5</dt><dd>bullet base</dd><dt>6</dt><dd>Propellant charge module, powder disc</dd><dt>7</dt><dd>recess</dd><dt>8th</dt><dd>bulk powder</dd><dt>9</dt><dd>axial ignition channel</dd><dt>10</dt><dd>radial ignition channel</dd><dt>11</dt><dd>outer surface</dd><dt>12</dt><dd>ignition channel</dd><dt>13</dt><dd>perforation</dd></dl><dl tsize="3" compact="compact"><dt>100</dt><dd>Center axis</dd></dl>