RU2262059C2 - Shell-shaping charge - Google Patents

Abstract

FIELD: devices forming the affecting components of the rocket warheads.

SUBSTANCE: the shell-shaping charge has an explosive charge placed in the body, system of its initiation and a liner accelerated by the explosive blast, made bimetallic of materials with different density, the layer of material with a higher density is positioned before the layer of material with a lower density adjoining the explosive. The geometric dimensions, material of the liner layers and the position of the points of the initiation are selected proceeding from the condition of provision of implantation at a burst of the explosive with a higher density to the head of the shaped affecting component and control of the process of shaping of the affecting component due to the asymmetry of the output of the detonation wave to the liner surface.

EFFECT: improved kinematic and aerodynamic characteristics of the affecting component.

2 dwg

Description

The invention relates to military equipment, and in particular to devices for the formation of striking elements (PE) of warheads of missiles.

There are three main methods for forming PE from an axisymmetric sphere-shaped shell. It:

1 - folding of the peripheral part forward (along the flight), for example, R. Fong, B. Raye and W. Ng "Calculations of axisymmetric explosive-formed warhead tips using the 3D program", 2-481, Ballistics, 1998;

2 - folding the peripheral part back, for example, R. Jach, M. Mroczkowski, A. Sarzynski, R. Swierczynski and E. Wlodarczyk "3D free particle computer modeling of explosive formation of projectiles", 16-th international symposium on ballistics, San Francisco, 1996;

3 - leakage of the shell material on the axis of symmetry (ibid.).

Known projectile charge according to US Pat. US No. 5744747, publ. 04/28/98 (closest to the execution scheme), which consists of an explosive charge in the shell and a metal liner set in motion during detonation of the explosive. The metal liner has a thickness that decreases from the central to the peripheral part and is in contact with the shell. The liner and the explosive charge are separated from each other by a metal plate having a diameter equal to the inner diameter of the shell. This metal plate is in contact with at least the thinned peripheral portion of the liner. The material and geometrical parameters of this plate are chosen in such a way that it reduces the speed imparted to the peripheral part of the liner by the explosive when it detonates, relative to the central part. As follows from the description and figures here, the formation of the damaging element occurs according to the second type. After detonation, the metal plate is separated from the liner. The disadvantage of this projectile-forming charge is the loss of the kinetic energy of the PE, due to the fact that the additional mass in the form of a metal plate that separates when throwing is not an integral part of the striking element, but is involved only in the formation of its geometry, which does not provide a stable position of the PE during flight.

As a prototype, a shell-forming charge was selected according to the patent US 3025794 A, 03.20.1962, NKI 102-24, p. 4, containing an explosive charge (BB) placed in the housing, its initiation system and a shell-forming liner accelerated by the explosion of explosives, which is made of bimetallic, of layers of different densities, the layer adjacent to the explosive charge is made of zinc or aluminum, and the layer in contact with the above is made of copper or steel (i.e., a layer of material with a higher density is located in front of a layer of material with a lower density )

The technical problem to be solved is to expand the capabilities of controlling the process of formation of damaging elements.

The expected technical result from the implementation of the invention is to expand the range of forms of the resulting damaging elements.

The indicated technical result can be obtained by a projectile-forming charge consisting of an explosive (BB) placed in a charge case, its initiation system and a projectile-accelerating liner accelerated by the explosion of explosives made of bimetallic materials of different densities, while a layer of material with a higher density is located in front of the adjacent layer to explosive material with a lower density. According to the invention, it is proposed that the geometrical dimensions, materials of the liner layers and the arrangement of points of the initiation system be chosen from the conditions for ensuring implantation of an explosive material with a higher density located in front of the head of the formed projectile and the ability to control the formation of the damaging element due to the asymmetry of the detonation wave output to the liner surface .

The thickness of the layer of material with a higher specific density is made decreasing from the center to the periphery. The bimetallic liner can be made in such a way that a layer of material of lower specific density is in contact with another layer, at least in the peripheral part. The location of the initiation points can be selected from the condition of ensuring the asymmetry of the exit of the detonation wave to the surface.

In the projectile-forming charge we propose, the formation of the damaging element occurs according to option three, when the radial components have the strongest influence on the formation, as a result of which the shell material goes into a plastic state. In this case, a material with a higher specific gravity, precipitating onto a material with a lower specific gravity, interacts with it (mixing turbulently along the dividing line), forming a solid bimetallic element.

The implementation of the liner is bimetallic, with the dimensions and materials selected in accordance with the specified condition, allowing its entire mass to be transferred to the composition of the striking element, that is, all kinetic energy selected from the explosive charge is completely transferred to the striking element. The introduction of a material with a higher specific density in the head part of PE is a stabilizing factor that improves the aerodynamic characteristics of PE.

The location of the explosive charge initiation points selected from the condition of ensuring the asymmetry of the detonation wave exit to the liner surface allows controlling the process of PE formation.

Figure 1 shows the projectile-forming charge with a bimetallic liner. The projectile-forming charge comprises a housing 1, explosive charge 2, an initiation system 3, and a projectile-forming bimetallic liner 4, consisting of a layer of material with a high specific gravity 4, for example tantalum, alloys of tungsten, depleted uranium, and a layer of material with a lower specific gravity 5, for example iron, copper. Layers 4 and 5 can contact each other either on the entire surface or on the peripheral part. In the latter case, the central part of the layer 5 can directly contact the explosive charge. The thickness of the layer 5 may decrease from the central to the peripheral. The initiation points can be placed in such a way that the formed detonation wave front will facilitate the advance movement of the heavier central part of the liner to the head part of the PE, including the formation of asymmetric PE. The formation of the projectile (striking element) is as follows.

The explosive charge 2 is blasted using the initiation system 3. After the detonation wave passes through liner 4 due to heating and acting loads, it goes into a plastic state and takes the desired shape. The accepted form of PE depends on the different masses of the various sections of the liner, their different dynamics, as well as on the shape of the detonation wave front (its curvature), determined by the location of the initiation points. In the advanced mode, a material with a higher specific density, located in the central zone, whose mass is greater than the mass of the peripheral zone of the liner, is involved in the formation of the head part of the PE (projectile). The peripheral part of the liner moves at a lower speed due to the lower mass and due to the delay in the moment the detonation wave emerges on the surface of this zone. As a result of this, the center of gravity of the projectile is shifted in the direction of its warhead, providing better aerodynamic performance during flight.

Thus, the problem of expanding the range of forms of the resulting damaging elements is solved. Possible design options are shown in figure 2.

Claims (1)

A projectile charge containing an explosive (explosive) charge placed in the housing, its initiation system, and an explosive accelerated airliner, made of bimetallic materials of different densities, while a layer of material with a higher density is located in front of a layer of material with a lower density adjacent to the explosive, different the fact that the geometric dimensions, the material of the liner layers and the location of the points of the initiation system are selected from the condition of providing implantation in the explosion of an explosive material with a higher density in the part of the formed striking element and the ability to control the process of formation of the striking element due to the asymmetry of the detonation wave output to the liner surface.

Images