DE102005020180B3 - Munition testing device, especially for investigating priming behaviour, comprises radiation-transparent munition receiver of fiber composite material with inner liner, allowing photographic monitoring - Google Patents

Abstract

In a munition testing device comprising a housing containing a receiver (3) for a munition, the receiver comprises fiber composite material (8) with an inner liner (7) and has a suitable layer thickness (d) to make it transparent to radiation. INDEPENDENT CLAIM are also included for two measuring systems incorporating the above device, in which: (A) X-ray sources are arranged before the shooting (i.e. testing) device such that radiation beams enter through a cartridge store (3) under a defined angle and collide with a detector device at the exit side; or (B) the cartridge store is irradiated through a multi-anode tube, behind which a fluorescence screen is located, so that the X-ray radiation is converted into visible light, which is received by a high-speed camera and an image intensifier in series.

Description

The The invention relates to an ammunition tester especially for medium caliber ammunition.

Especially for the Development of novel ammunition, it is important that ignition behavior and the ignition process to know or to study this ammunition. In general, for this Task a firing device used and the results evaluated.

Is known a Munitionsprüfgerät from the DE 14 28 695 A , The usefulness of the ammunition is determined here by the measurement of a maximum gas pressure and the determination of a target image in a series of experiments. It is proposed to mount all attachments movable with the weapon barrel as well as the gas pressure gauge so that the common center of gravity lies in the axis of the tube.

A further ammunition testing device for determining inside ballistic or pipe-specific parameters occurring during the firing of the ammunition in the measuring run describes the DE 31 32 085 C2 ,

With the CH 629 891 A5 An ammunition testing apparatus with a piezoelectric pressure transducer is disclosed.

adversely with these testers, that the investigations or evaluations only on pure measurement results based.

Here the object of the invention is to show an ammunition tester which allows an optimal examination.

Is solved the object by the features of claim 1. A measuring arrangement is in the claims 9 and 10 claims.

Of the Invention is based on the idea, in particular the ignition process to be able to photographically examine an ammunition, the area in which the ignition takes place, from a material permeable to rays or material perform. Prefers it can be X-rays.

Of the for X-rays transparent and a cartridge chamber or a cargo space forming in the meter Range consists of a preferably cylindrical fiber composite body (Hygienwebe) and is in a metal case appropriate. That in the meter used cartridge chamber is due to a preferred wall thickness from a maximum of 25-30 mm for X-rays sufficiently permeable, X-ray technology for the burning process, z. B. by X-ray cinematography to document.

Especially during the exam of telescoped caseless Ammunition is subject to high pressures in the chamber. The cylindrical fiber composite body is Therefore manufactured so that this the high pressures and temperatures, the as a result of ignition and associated with the explosion can be initiated, that is, u. a. shelling pressures up to 4000 bar. The composite body has a corresponding arrangement of different layers (laminate) made of different fiber composites.

in the axially supported Cylinders also experience large tensile stresses in the circumferential direction, in particular, the inner layers a very large compressive stress Experienced. Therefore, in a preferred embodiment, besides an inner liner made of polyamide at least one crack stop layer provided in the laminate.

It has been shown to make synthetic fiber composites up to a laminate thickness of about 30 mm one for the examination acceptable permeability for the X-rays but also one sufficient pressure stability exhibit. As fiber composites are AFK (Aramidfaserkunststoff), CFRP (carbon fiber plastic) and / or fiberglass (fiberglass) at. The laminate should consist of at least two distinctly different ones Fiber orientations exist. Wrapped alternately for example, an aramid layer, a glass fiber layer and thereon again an aramid layer. The aramid fibers are for example each at an angle between 25 to 35 ° and the glass fibers in one Angle of about 45 ° wound.

The Functioning of the firing device or of the ammunition tester primarily by the specific structure of the composite, such as fiber type, Winding angle and lining of the inner surface with plastics as well the installation of the body in the Beschussgerätgehäuse, for example centered in the center with tube attachment caps. In some cases Seals that prevent gas leakage important. These seals can For example, be plastic gaskets that have a specific shape exhibit.

In the composite body, the burn-up of the ammunition is preferably photographed, for example with the aid of X-ray technology or primarily. For this purpose, during the shot at defined times, images, here x-rays, of the inner life the cartridge chamber or cargo space received by a measuring device.

In a first variant of a possible measuring arrangement a multiple anode tube radiates the firing device with chamber, behind which there is a fluorescent screen. This transforms the X-rays in visible light, which, for example, with a high-speed camera can be recorded with an upstream image intensifier.

at the preferred further variant can also several (for example four) X-ray sources involved in the measurement and the cartridge chamber in different Angles are aligned so that measurements in different Portions of the cartridge chamber are possible. Behind the chamber becomes, for example, an X-ray film placed using shields ensures that each Radiation source exposed only one area or strip of the film. For the Measurement, the radiation sources are activated with a time delay.

Based an embodiment with drawing the invention is explained in detail. It shows:

1 a representation of the firing device with a fiber-wound cartridge chamber,

2 a representation of the wound cartridge chamber in a plan view,

3 a measuring assembly with the chamber and the firing from 1 ,

1 shows a shelling or measuring device 1 with a housing 2 and one in the case 2 located cartridge chamber 3 , as well as additional components, in this case a recoilless automatic cannon, for reconstructing the firing behavior of a projectile or ammunition 10 , These additional components are a nozzle in this embodiment 4 as well as a pipe 5 ,

The cartridge chamber 3 is a fiber-wound, x-ray transparent, cylindrical body and in the firing device 1 or in the housing 2 preferably stored centered. For this purpose, the cartridge chamber 3 in each case at the front side according to the installation pipe filler caps 6 on which by centering the centered holder in the housing 2 support. As innerliner 7 In particular, an embodiment is a plastic, for example polyamide, on which the fiber composite material 8th or the layers are wound up. The production or winding is conventional.

2 shows the chamber 3 out 1 in a plan view with a Aufsetzkappe 6 , Thickness d of the bearing 3 is preferably about 25 mm.

In 3 is a possible measuring arrangement 10 with several, here four, to the firing device 1 nozzle-side arranged X-ray sources 11 demonstrated. At the exit of the firing device 1 , tube side, there is a detector assembly 12 For example, a film cassette, wherein in a known manner aperture 13 and 14 can be used as collimators and can be made of polyethylene.

For the measurement, the radiation sources 11 activated one after the other at defined time intervals. The beam paths X _1-4 thereby pass through the cartridge chamber 3 On the input side at a defined angle and on the output side again and hit the detector assembly 12 on. With the help of the X-ray images shown here (not shown in detail), the ignition process in its entirety or the burning behavior can be evaluated in particular.

The measuring or shelling device 1 is very suitable for testing the burn-off behavior of caseless telescoped ammunition 10 ,

Claims (10)

Ammunition tester ( 1 ) with a housing ( 2 ) and one in the housing ( 2 ) an ammunition ( 10 ) receiving body ( 3 ), which consists of a fiber composite material ( 8th ) with an inner liner ( 7 ), whereby the body ( 3 ) has a layer thickness (d) at which it is transparent to rays (X _1-4 ). Ammunition tester according to claim 1, characterized in that the body ( 3 ) a cartridge chamber or a cargo space of a weapon simulates. Ammunition tester according to claim 1 or 2, characterized in that as fiber composites AFK, CFRP and / or GRP can be used, which are wound alternately become. Ammunition tester according to one of claims 1 to 3, characterized in that the body ( 3 ) has at least one crack stop layer. Ammunition tester according to one of claims 1 to 4, characterized in that the inner liner ( 7 ) of the body ( 3 ) consists of polyamide, on which the layers of the fiber composite ( 8th ) are wound up. Ammunition tester according to one of the claims 1 to 5, characterized in that the body ( 3 ) has a layer thickness (d) of about 30mm. Ammunition tester according to one of the preceding claims, characterized in that the beams (X _1-4 ) are X-rays. Ammunition tester according to one of the preceding claims, characterized in that for simulating a recoilless machine gun a nozzle ( 4 ) as well as a pipe ( 5 ) and with the body ( 3 ) are functionally connected. Measuring arrangement using the ammunition tester ( 1 ) according to one of claims 1 to 7, characterized in that X-ray sources ( 11 ) so in front of the firing device ( 1 ) are arranged so that the beam paths (X _1-4 ) through the chamber ( 3 ) on the input side at a defined angle and on the output side to a detector arrangement ( 12 ). Measuring arrangement using the ammunition tester ( 1 ) according to one of claims 1 to 7, characterized in that by a multi-anode tube, the chamber ( 3 ), behind which there is a fluorescent screen, wherein the X-ray radiation is converted into visible light, which is recorded with a high-speed camera and an upstream image intensifier.