DE3202948A1 - DAMPING DISC - Google Patents

Description

-2 ~ ²⁹ January 1982

Fi) HKNADK FABRJ KSVEHKEN

S-631 87 Eskilstuna "F.2343 Al / ra

Sweden

Description 10

Damming washer

The present invention relates to a damming washer, which is a solid rear wall in a combustion chamber in a barrel of a recoilless gun or in an in The tube is inserted ammunition propellant charge case, which is dimensioned such that it is at a predetermined Gas pressure in the combustion chamber bursts and thereby a gas flow from the combustion chamber after back through the tube.

Ammunition for recoilless guns is generally provided with a propellant charge or cartridge case which contains a propellant charge and an ignition charge disposed behind it to ignite the propellant charge. The cartridge case forms a closed combustion chamber for these charges. In order to achieve freedom from recoil, the floor is The cartridge shell is shaped like a disk, a so-called damming disk, which is also called the base disk The purpose is to close the combustion chamber backwards until the combustion reaches a certain pressure generated, in which the pane bursts and allows the combustion gases to flow backwards or backwards. The disc is dimensioned so that it is approximately simultaneous with the launch of the projectile from the cartridge case burst. This ensures the required recoil

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Instead of forming the bottom of the cartridge sleeve, at hullless ammunition, the damming disk in the barrel of the weapon can be attached behind the propellant charge of the projectile. In this case the combustion chamber consists of a pipe section which is bounded at the front by the projectile and at the rear by the damming disc.

Regardless of which of the above damming washers is used, it should have the following properties:

The splinters that are thrown back should not endanger the soldier (it becomes a little more dangerous Aimed for area behind the gun).

The base disk should be moisture-proof.

Should you be the same? Have strength within the entire temperature range from -100 ⁰ C to +100 ⁰ C, ie they should be at a certain gas pressure regardless of the prevailing temperature rupture or burst.

it should have a long shelf life.

Known base disks generally consist of rubber, plastic, Bakelite, paper or cardboard laminates or the like burstable material. However, none of these materials have all of the properties mentioned above.

Although these self sheep ton long been known for toughened glass are, you have not previously thought possible, the use of this material at Abdämmungsschei- ⁰ ^ ben before strike, especially because it could hardly be expected that glass would be strong enough to withstand the initial pressure that the propellant charge builds up in the combustion chamber. Toughened glass is therefore up to

] Ϊ "Η ·. · Γ has only been proposed as MdLcr ial eg in movable Ιοίκ.-η Rt-.Γκ t ionsr.ij ^. 'Un or the like, soft by the Vurbronnungr.gaoe of the propellant charge through the rear toilet of the Rohrf's are forced out, where they are splintered against a stop, see, for example, US Pat. No. 4,132,148. In contrast to this, it has not been considered logical to propose glass as the material for a damming pane which is fastened or fixed in a combustion chamber and must withstand a certain initial pressure in the fixed state and then splinter.

The present invention is based on the surprising Realization that toughened glass, contrary to existing and accepted theories, is also defined as a material in or attached insulation washers can be used can.

Further advantages, features and possible applications of the present invention emerge from the following Description of exemplary embodiments in conjunction with the drawing. Show in it:

1 shows an embodiment of the present invention,

in which the disc the bundle part in a Forms cartridge case, which is included in an ammunition for a recoilless gun, and Fig. 2 shows an embodiment in which the disc in The barrel of a recoilless gun for ammunition without a cartridge propellant is clamped. 30th

Fig. 1 shows schematically a recoilless gun of the conventional type Type with a tube 1 into which a projectile is inserted in the loaded position. Floor 2 is in a Trcibladungshülse 3 fentlogt, well known in Way a propellant charge 4 and ohio 7, ünd 1 contains udumj 5, wrlche from the side by nine /.ündoi iir i c.ht ung 6 g ^ -iindet can be. The rear wall of the sleeve 3, which is in the sleeve 3 is attached, seen from a damming sheet 7,

which consists of toughened glass.

Fig. 2 schematically shows a recoilless gun in FIG conventional type with a barrel 11 into which a projectile 5 without a casing propellant is inserted in the loading position.

A combustion chamber is provided behind the projectile 12, which is sealed gas-tight and at the front by the projectile 12, on the ropes through the tube 11 and at the rear by a Damming washer 17 made of toughened glass, which is in the tube is attached, is limited. A propellant charge 14 and an ignition charge 15 are arranged in the combustion chamber, which can be ignited from the side by a conventional ignition device 16.

The various components of the recoilless gun and the ammunition are of a conventional type and, with the exception of the damming washer, do not form part of the present The above schematic description is therefore considered to be adequate.

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Claims (1)

P AI Γ Ν Τ - Ii ND Π f; CJ3 Γ S AN \ V Ä1 2 Γ * Ε '- "' • V ·. ·. 4L T JOCHEiN PAGhNRLRG:. » ..j «, Ii '' »· ■ ·. WOLFGANG A. DOST _lh .l.pl UDO W. ALTENBURG cpl. _Ph POST BOX 86 06 20, 8000 MUNCHtN 86 GAULEIPUVTZ 1.8000 MLJNCHHN 80 TELEPHONE (0 89) 98 03 61
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CABiE FADF ¹ JRO MUNICH DATE January 29, 1982 F 2343 Al / ra Claim q Damming washer, which is a solid back wall in a combustion chamber in a barrel of a recoilless gun or in an ammunition propellant case inserted into the barrel forms, which is dimensioned such that it is at 5 bursts at a predetermined gas pressure in the combustion chamber and thereby allowing gas to flow rearward, through the tube, from the combustion chamber, therethrough marked that the damming disc (7, 17) is made of toughened glass. 10 15 V. .f lASS-tNE Vf ^ " RS ^: SEMATlVtS BCF ORE THE EUROPEAN PATE NT O- HCE