Ammunition and explosives – Mines – Igniting means
Patent
1996-09-13
1998-08-18
Tudor, Harold J.
Ammunition and explosives
Mines
Igniting means
102401, 102428, F42B 2300
Patent
active
057960305
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a mine which comprises a triggering arrangement provided with a trigger and fuze, a primary charge, explosive and impact body in the form of a liner for generating the shaped charge effect. The fuze initiates the explosive via the primary charge.
BACKGROUND OF THE INVENTION
There is a general need to increase the impact of mines which function in accordance with the shaped charge principle. The mine should not just provide impact upon striking against the track of the tank, but also upon striking the belly of the tank, a so-called full-width attack. The liner should in this case assume the form of a projectile which penetrates the belly of the tank at great speed. Secondary splinters generated at the belly of the tank are hurled into the vehicle and cause great damage to parts which are vital to the functioning of the tank.
In known mines operating in accordance with the shaped charge principle, the initiation takes place centrally in the explosive with the aid of a large primer.
SUMMARY OF THE INVENTION
The object of the present invention is to produce a mine which provides increased impact, for example in the form of greater penetration through armour plate, compared with present-day mines.
The object of the invention is achieved by a mine which is characterized in that the primary charge is placed in close proximity to the bottom of the mine, and a spacing member is arranged between the primary charge and the liner. By lowering the point of initiation, the energy of the explosive is better utilized upon transfer to the liner. This is due, on the one hand, to the greater angle of incidence with respect to the liner and, on the other hand, to the fact that the detonation distance is extended and thereby the detonation velocity increased. Trial explosions and calculations have confirmed the increased impact from the explosive.
The spacing member can be of solid design or can have air gaps. Appropriate damping can be achieved by the possibilities of varying the design of the spacing member.
In a preferred embodiment, that part of the spacing member facing towards the bottom of the mine has a shape which is essentially of the circumferential surface of the frustum of a cone, with the base facing towards the bottom of the mine. This shape contributes to further lowering of the point of initiation.
The spacing member can be a separate unit, but it can also advantageously be made integral with the holder for the triggering arrangement, as a result of which coupling arrangements in the form of screw connections or the like can be simplified, and the number of components included can be minimized.
In a further preferred embodiment, the triggering arrangement is arranged to act on the top side of the primary charge. In this way, the triggering arrangement can be placed at a higher position nearer to the top of the mine, and at the same time the primary charge is concentrated at the bottom.
According to another alternative embodiment, the fuze of the triggering arrangement is arranged to act on the primary charge from a hole which is disposed at the center of the primary charge. This arrangement ensures effective and symmetrical initiation of the primary charge and provides for an optimal angle of incidence with respect to the explosive and, consequently, maximum impact.
The invention will be described in greater detail below by way of example, with reference to the attached drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an example of a known mine design;
FIG. 2 shows a first example of a mine design according to the invention, with a low point of initiation;
FIG. 3 shows a second example of a mine design according to the invention, with a low point of initiation;
FIG. 4 shows a third example of a mine design according to the invention, with a low point of initiation;
FIG. 5 shows a fourth example of a mine design according to the invention, with a low point of initiation, and has been inserted.
FIG. 6 shows a fifth example of a m
REFERENCES:
patent: 3216354 (1965-11-01), Bearce
patent: 3399620 (1968-09-01), Pecksen et al.
patent: 3411445 (1968-11-01), Madlener et al.
patent: 3521563 (1970-07-01), Bekcer
patent: 4252062 (1981-02-01), Auge
Bofors AB
Tudor Harold J.
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