DE2745469C2 - Area-symmetrical cutting charge - Google Patents

Description

The invention relates to a surface-symmetrical cutting charge with a roof-shaped or channel-shaped, in particular lined cargo cavity.

The known cutting charges of the type mentioned at the beginning have a central initiation point in the Plane of symmetry in common. As a measure to increase performance, they use the hollow charge technology derived detonation wave steering application. To this end, in such a Cutting charge from the charge side facing away from its roof-shaped or channel-shaped cavity, an in Inert material in the direction of the apex of the cavity is embedded in the middle

The resulting loss of volume is compensated for the cutting explosive charge by increasing the height of the charge accordingly. Except this increase in the overall height becomes something other than disadvantageous with this type of increase in performance viewed. What is meant by this is the requirement of an increased, cost-intensive one for reasons of accuracy Care in assembling the inert material

inlay.

The invention is therefore based on the object of improving the performance in the case of cutting charges of the type mentioned at the beginning to improve in a simpler way than before.

According to the invention, this object is achieved by two initiation sites for simultaneous charge initiation in an arrangement that is mirror-symmetrical to the plane of symmetry on the forehead facing away from the cavity.

Two initiation sites are already known from DE-AS 11 72 591, but not in the case of charges from are designed from the outset as area-symmetrical cutting charges, but with rotationally symmetrical ones Shaped charges. Said initiation sites are also not located on the end face of the charge facing away from the cavity. Rather, they are arranged laterally, specifically laterally with respect to the axis of symmetry, i. H. the longitudinal axis of the load. Ultimately, the purpose it pursues is none other than rotationally symmetrical Shaped charge designs the otherwise lack of possibility to achieve cutting effects at all to be provided. But this is different from an increase in the cutting effect that can be achieved from the outset with cutting charges.

With the simple measures taken according to the invention, it is now possible to use cutting charges Achieve the same performance-increasing effect with regard to the cutting effect as with the known detonation wave steering. What distinguishes it above all from the latter is the fact that it leads to its realization does not require any inert material inlay in the cutting charge. Namely, this leaves out already mentioned Reasons a saving in height. If this is not done, however, there is also the high expenditure of time and money, which must be operated in order to insert such an inert substance into the cutting charge with the or channel-shaped charge cavity to incorporate the required degree of precision.

For reasons of simplicity, it is advisable to use the initiation sites to be designed as connection points according to the design feature of the invention

for one of two detonation or cutting cords, in particular those of the same quality and length, which are united at the other end to form an initiation point, or
for a transfer charge with a central initiation point at the end facing away from the cutting charge and an inert barrier for detonation wave guidance at the end facing the cutting charge.

In a further development of the invention, the initiation points are in one case points on the in the cutting direction seen the front end face of an explosive plate on the roof- or gutter-shaped cargo cavity opposite side of the cutting charge with a higher detonation speed than the latter and in In another case, points on the front end faces of two cutting or cutting edges, as seen in the cutting direction Detonation cords with a higher detonation speed than the cutting charge, which on the the side of the cutting charge facing away from the roof-shaped or channel-shaped cavity on the in the direction of the Cavity apex extending charge edges are arranged. This proves itself with the simultaneous initiation the cutting charge at the points provided for it as advantageous, as it creates a so-called Drag ignition, d. H. the receipt of a drawn

U 3 4

'- a detonation wave, it is ensured that the charge lines parallel to the cavity apex 6

5 'on the lining of the cargo cavity high to which they are attached, they represent connection points

<■ Spike tip speeds and thus high for two cutting cords 7a and 7b of the same quality

Cutting performance produces ^{length and} length. At their the cutting charge 1 removed

The invention is based on the 5 ends in the drawings, these cutting cords la and Tb to an In-

schematically shown and subsequently descriptive itüerungspunkt combined

NEN exemplary embodiments explained in more detail. In FIG. 2 is a surface symmetrical cutting charge. 1 also has this cutting charge with a channel-shaped charge cavity. Cutting charge 11 in a mirror-symmetrical arrangement As already mentioned, Fig. 1 shows a surface-symmetrical to its plane of symmetry two initiation points 14a trical cutting charge 1 with roof-shaped charge and 146 for a simultaneous charge initiation, and cavity 2, for example, a metal Aus- although on the front end face of a cover plate 15 made of clothing 3 This cutting charge 1 15 is an explosive with, compared to the cutting charge, with two initiation points Aa and 4b for a simultaneous detonation speed

* to their plane of symmetry. Said initiation points for a transfer charge 16 with a central ^ are located on the front end faces of two deto initiation points 17 on the cutting charge 11

* national cords 5a and 5b with the end facing the cutting charge 20 and an inert barrier 18 for detonation charge with high detonation speed, the end facing away from the cutting charge 11 facing the charge cavity 2 on the charge side facing away from the cutting charge 11.

1 sheet of drawings

Claims (5)

- Patent claims: 1. Area-symmetrical cutting charge with roof-shaped or channel-shaped, in particular lined, charge cavity, characterized by two initiation points (4, 4b, 14a, i4b) for simultaneous charge initiation in an arrangement on the plane of symmetry that is mirror-symmetrical to the plane of symmetry * the end face facing away from the cavity (2, 12). 2. cutting charge according to claim 1, characterized in that the Initüerungsstellen as end-side connection points (4a, 4b) a are formed by two cutting or detonation cords (7a, 7b) for in each case, wherein the cords (7a, 7b), in particular those of the same composition and length and at their ends remote from the cutting charge (1) are combined to form an initiation point (8). 3. Cutting charge according to claim 1, characterized in that the initiation points as the end face Connection points (14a, 146) of a transfer charge (16) with a central initiation point (17) at the end remote from the cutting charge (11) and an inert barrier (18) for guiding the detonation waves are formed at the end facing the cutting charge (11). 4. Cutting charge according to one of claims 1 to 3, characterized in that the initiation sites Positions (14a, 146) on an explosive plate (15) on the one facing away from the charge cavity (12) Side of the cutting charge (11) with a high detonation speed compared to the latter. 5. Cutting charge according to one of claims 1 to 3, characterized in that the initiation points (4a, 4b) are each one of two cutting or detonation cords (5a, 5b) with a high detonation speed compared to the cutting charge, the two cutting - or detonation cords (5a, 5b) are attached to the cutting charge side facing away from the charge cavity (2) in the area of the charge edges parallel to the cavity apex (6).