RU2555560C1 - Section of extended mine clearing charge - Google Patents

Abstract

FIELD: weapon and ammunition.

SUBSTANCE: sections of the extended mine clearing charge are made using links the housings of which are filled with explosive by a pouring method. Power threads are formed by two plaits, and the detonating cable - by two detonating cords. Plaits of power threads and detonating cords are grouped symmetrically in pairs. The power threads and the detonating cable in each link are rigidly connected in a moulding composition of explosive with providing of their structural adhesion. Housings of links are rectangular in sections. Inside the housing the detonating cords have a slack compared with threads therefore the cords are completely surrounded with explosive. For technological effectiveness of explosive pouring the side of the mouth of ammunition of all cases alternates.

EFFECT: improvement of safety of filling of charge section with explosive, increase of weight and length of the extended mine clearing charge, decrease of labour input and time of laying of extended charge, providing initiation of charge blasting along the whole length without using intermediate detonators.

2 cl, 5 dwg

Description

The present invention relates to the field of military equipment, in particular to devices of long elongated clearance charges supplied from rocket launchers to landmine fields by air by jet engines in order to make passageways for armored vehicles and other equipment in them.

The Russian Federation and foreign armies are armed with mine clearance systems for making passages in the enemy’s anti-tank minefields (see, for example, Russia's Arms. Catalog. T.VII. High-precision weapons and ammunition. AOZT Military Parade. M. - 1997, p. 658, 657 - demining units UR-77, UR-83P), the TAMRAR demining system (Turkey), the extended mine clearance charge "M58 (M58 MICLIC)" (USA) and others.

Known clearance charges have a length of about one hundred meters, a mass of at least 1 ton and, according to the conditions of production and operation, consist of successively assembled sections (for example, sections DKR-4, DKRP-4 (Prototype) “Means of overcoming mine-explosive barriers”, 15 Central Research Institute Russian Defense Ministry named after D.M. Karbyshev, 2004 Russia).

The developers of this type of weapon are faced with the task of constantly improving it in the direction of increasing the main tactical and technical characteristics, which primarily include the linear mass, explosive power and the length of the mine clearance charge.

In demining installations, charges are stacked in cassettes, the volume of which, ultimately, determines the length and mass of the charge.

For structural and technological reasons, the known mine clearance charges were made from pressed and plastic explosives. At present, prospects have opened up for the use of more powerful and, in the current conditions, more technologically advanced injection explosives with increased explosive action, but which have also demanded new solutions for the design of the elongated charge section.

Known designs of sections for elongated clearance of mine contain links from the housings, each of which has an end filler neck, end-to-end power threads that perceive the dynamics of reactive feed, a through detonating cable, section bend nodes with flexible nozzles between the links, end sections of the connection sections and the transfer of detonation between sections with knots of termination of power threads and through detonating cable.

In the presented design, the sections of the elongated mine clearance charge are made of links, the casings of which are loaded with explosives by pouring, while the power threads in the form of two power harnesses and the detonating cable in the form of two detonating cords inside each link are inseparable from the explosive, and after the equipment power harnesses and detonating cable is walled up in the injection explosive to ensure their structural adhesion. The power threads made of two bundles and the detonating cable made of two detonating cords are grouped in pairs symmetrically. Inside the case, they are fastened in places, and in between the detonating cords are weak in relation to the power harnesses, due to which the cords deviate from the axis and are completely surrounded by explosive, which is necessary to ensure reliable detonation of the explosive from the detonating cord.

To ensure the technological effectiveness of filling explosives into the shells, at the same time, the sides of the equipment neck of each of the shells alternate along the length of the section, and when folding to the contact of the shells, the neck of the equipment is on one side with a minimum distance from each other.

Cases of charges have a rectangular cross section.

The design of the elongated mine charge section is illustrated by drawings and photographs.

Figure 1 shows a General view of the section of the extended charge of clearance.

Figure 2 shows in longitudinal and transverse sections of the casing of the links of the charge section and adjacent bend nodes.

Figure 3 shows the stacking of a double-strand mine clearance charge in the launcher cartridge. Section connection nodes are conditionally not shown.

Figure 4 presents a photograph of the section as part of a single-line mine clearance charge (without a mine clearance cassette) before starting launch.

Figure 5 presents a photograph of the section as part of a single-line mine clearance charge when the charge is launched into the minefield.

The section of the elongated clearance charge (Figure 1, Figure 2) contains the end body 1 (head) and 2 (tail), the intermediate body 3, 4, 5, filled with explosive 6, the nodes of the fold 7, 8, 9 with flexible nozzles 10 , 11 between the section housings, through power harnesses 12, 13 and through detonating cords 14, 15, end nodes 16, 17 of terminating power harnesses, detonating cords and connection parts of the sections.

Each housing 1, 2, 3, 4, 5 on the front side is equipped with a neck of equipment 18, 19.

Power harnesses 12, 13 and detonating cords 14, 15 are grouped (Figure 2, aa) pairwise symmetrical. Along the length of the section, power harnesses 12, 13 and detonating cords 14, 15 are fastened together in places to fix this symmetry, while inside the case they are fastened in one to three places at intervals of 20, in which the detonating cords 14, 15, having a long length 0.02 ... 0.1 (by 5 ... 10%) than the power harnesses 12, 13, form slack and arbitrary bends in the space near the power harnesses (even before the equipment). The lengths of the detonating cords 14, 15 are selected based on minimizing the total length of the cords, increasing the total area of contact between the explosive 6 and the detonating cord to ensure reliable detonation and manufacturability of the assembly of the elongated mine clearance section as a whole.

The space of the buildings 1, 2, 3, 4, 5 is filled with explosive 6 by the filling method, after its subsequent curing, the penetration of the explosive into the surface structures of the bundles and cords and, accordingly, their structural adhesion to the explosive.

The mouths of the equipment 18, 19 of the buildings 1, 2, 3, 4, 5 are arranged sequentially along the length of the section and are made alternately from different end sides: head, tail, head, tail, and so on.

The shells of the charges and, accordingly, the explosive charges themselves are (Figure 2, aa) rectangular, for example a square section and are made by known methods.

The section of the elongated explosive clearance mine is equipped at the last stage of assembly, when all mechanical assembly work was carried out on parts relatively light in weight with a minimum level of handling explosive products.

To equip with molten explosive, all the sections of the section are folded up and placed in a vertical position, so that all the filling necks of the sections, due to their alternating arrangement, are in the upper position, at the same level and at a minimum distance from one another. This simplifies the equipment process, primarily the design of filling devices, and increases the density and continuity of charge. In a particular development, the filling neck is made in the form of two holes for filling and unobstructed release of air when filling explosive.

When laying an extended mine clearance charge into the mine clearance launcher cassette, the rectangular section of the cases not only geometrically provides a more complete use of the free space of the cartridge (Figure 3), but when using standard mine clearance facilities it provides the possibility of a direct increase in the weight and length of the clearance charge, facilitates the complexity of stacking the charge and reduces the standard charging time of the mine clearance unit.

When an elongated mine clearance charge is fed by jet engines from the launcher cartridge into the section, dynamic longitudinal and transverse loads of significant magnitude arise. The cohesion of the power harnesses with an injection-molded explosive composition and their reinforcement in it provide a solution to the strength issues of securing the charge links without the use of additional special tools and without an external nylon sleeve or power braid.

Placing the detonating cords directly in the explosive, the contact of the detonating cord and the explosive over a large area ensures that the demining charge is failsafe to initiate the injection composition without intermediate detonators.

The implementation of the detonating cable in the form of a symmetrical pair of detonating cords provides a symmetrical expansion of the products of the explosion and minimizes local failures of the parameters of explosive clearance (pulse of the explosion and pressure).

During the experimental development of the present invention, full-scale prototype (inert) sections of an elongated clearance charge were manufactured and polygon charges were launched at regular distances from the mine clearance unit. The issues of transmission and detonation completeness were tested on samples under stationary conditions. The test results are positive.

Callout number on the presented figures and its interpretation

1 - head case

2 - tail housing

3 - case

4 - case

5 - case

6 - explosive

7 - fold node

8 - fold node

9 - fold node

10 - pipe

11 - pipe

12 - power harness

13 - power harness

14 - detonating cord

15 - detonating cord

16 - terminal node

17 - terminal node

18 - neck of equipment

19 - equipment neck

20 - interval

Claims (2)

1. The section of the elongated clearance charge containing explosive charges, each in the case, for example, with the end mouth of the equipment, through power threads, through detonating cable, section bend nodes with flexible nozzles between the links, connection sections and detonation transmission units with embedment units power filaments and detonating cable, characterized in that the explosive of the links is made of cast composition, power filaments and detonating cable are made walled into the cast composition along the axis of the section with Through their structural adhesion to the molding composition during the solidification of the melt, the power threads are made of two bundles, and the detonating cable is made of two detonating cords, the bundles of threads and detonating cords are grouped symmetrically in pairs and fastened inside the case in one to three places at intervals moreover, the detonating cords in the intervals have a slack of 0.02 ... 0.1 with respect to the length of the harnesses, and the necks of the equipment of the hulls are made along the section length alternately from different end sides. 2. Section according to claim 1, characterized in that the housing of the charges have a rectangular cross section, for example square.

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