Practice weapon for a carried recoilless anti-tank weapon

Details Practice weapon for a carried recoilless anti-tank weapon Practice weapon for a carried recoilless anti-tank weapon

1996-07-11

1998-09-22

Johnson, Stephen M.

Ordnance

Practice barrels

89 1705, F41B 2110

Patent

active

058117156

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to a practice weapon for a hand-held recoilless anti-armour weapon. Such weapons take the form either of expendable one-shot anti-armour weapons or of assault rifles, and they are in use in many countries, including Sweden. The expendable one-shot anti-armour weapon and the assault rifle are equivalent types of weapon from the point of view of their field of use and effect but the assault rifle is reloadable. In Sweden they are represented by the 84 mm light anti-armour weapon AT4 (in Sweden called pansarskott 86) and the RCL Carl-Gustav M2 (in Sweden called the m/48 Carl-Gustav) respectively.


BACKGROUND OF THE INVENTION

When practice firing these weapons the infantryman cannot fire many full-calibre rounds, if any at all, since inert full-calibre rounds, i.e., rounds without a high explosive (HE) charge, are virtually as expensive as rounds with a high explosive charge. Until now, therefore, practice weapons with a sub-calibre barrel mounted within the weapon have been used. In the case of the expendable recoilless anti-armour weapon a special practice weapon with a permanently assembled sub-calibre barrel for 9 mm ammunition has been used. For the assault rifle the sub-calibre barrel, for 20 mm ammunition, is mounted in a special fixture resembling the live round which is loaded into the weapon in the same fashion as an HE round is loaded.
The marksman fires a sub-calibre round instead of an expensive round and this is entirely satisfactory for studying the marksman's success in hitting the target. He normally rapidly learns to fire accurately. It has, however, proved to be the case that marksmen who have the opportunity of firing full calibre rounds after successful training do not succeed as well as is desirable.
The reason for this is that the marksman who has been trained to aim and fire with his accustomed practice weapon tenses himself and is affected by the powerful disturbance he is subjected to when firing the full calibre round despite the fact that it is a recoilless weapon. The marksman experiences severe noise and pressure effects.
Clearly it is necessary for the marksman to have the opportunity of repeated practice to be subjected to these effects.
Weapons with marker charges are previously known from the German patent 2 059 202, the British patent 936 502 and the American patent 3,489,058. None of these shows, however, a practice weapon which in a simple way can be used both for initial firing practice without marker charge and final practice with such a charge.


SUMMARY OF THE INVENTION

The present invention solves this problem to a fraction of the cost of firing full calibre rounds by being designed as is evident from the following main claim.


BRIEF DESCRIPTION OF THE DRAWINGS

In the following the invention will be described in greater detail with reference to the appended drawings, in which
FIG. 1 shows in principle, mostly in longitudinal cross section, the design of a recoilless anti-armour weapon equipped with a practice fixture according to the invention,
FIG. 2 shows on an enlarged scale a part of FIG. 1 with special attention to the breech block and a part of the firing mechanism,
FIG. 3 shows a section through a marker charge with distance piece according to one embodiment of the invention,
FIG. 4 shows one embodiment of the part of the invention called the striker housing as seen from the front.


DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the present invention a sub-calibre cartridge or round 20 including barrel 2 for a sub-calibre projectile, and a marker charge 3 dimensioned to subject the marksman to a realistic effect of firing a full calibre round, is mounted in the barrel 1 of the recoilless anti-armour weapon or the assault rifle.
The marker charge 3 is located behind the barrel sub-calibre, as viewed from the direction of fire, and is arranged to be ignited by the jet of flame from the charge of the practice round 20. To achieve satisfactory function 4 is very important that the jet of flame from t

REFERENCES:
patent: 2970519 (1961-02-01), Musser et al.
patent: 3144808 (1964-08-01), Stapp et al.
patent: 3489058 (1970-01-01), Wallberg et al.
patent: 3618250 (1971-11-01), Grandy
patent: 4676136 (1987-06-01), Kalin

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