RU2558760C1 - Method of increasing fragmentation efficiency of cassette shot hitting element - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: proposed method consists in making localizers of crushing case into splinters in the form of annular grooves made on cylindrical part outer surface and bottom part outer surface. Cassette shot hitting element comprises case with cylindrical and bottom parts, explosive, fuse and case fragmentation localizers. Case is composed by two shells, solid inner shell and composite outer shell consisting of several isolated parts. Outer shell parts are composed of separate isolated rings to be fitted on said inner shell so that their side surface contact with each other. Annular grooves between outer shell parts are made by fitting extreme rings of outer shell parts so that they are spaced apart. Outer shell rings are composed of rings of several cylindrical spirals fitted coaxially one in the other to allow interaction there between.

EFFECT: higher fragmentation efficiency.

10 cl, 3 dwg

Description

The invention relates to cluster munitions, the shell of which contains many individual damaging elements, mainly fragmentation-cumulative effects.

Known damaging element of cluster munition, containing a housing consisting of a cylindrical and bottom parts, as well as localizers crushing the body into fragments made in the form of annular grooves on the outer surface of the cylindrical part, while the grooves have a conical shape (RF patent No. 2137087, IPC: F42B 12/58).

The disadvantages of this striking element are the presence of a “dead zone” of expansion of fragments in the gap between the fragmentation fields of the lower cylindrical and bottom parts, which leads to a decrease in the reduced area of damage, a small number of fragmentation locators, which leads to heterogeneity of the fragmentation field and an insufficient number of “killed” fragments, t .e. having the required energy to defeat.

There is a method of increasing the fragmentation efficiency of a cluster munition containing a shell, including cylindrical and bottom parts, an explosive, a fuse and localizers of crushing the shell into fragments, comprising localizing crushing the shell into fragments in the form of circular grooves on the outer surface of the cylindrical part of the shell and on the outer surface the bottom part and the striking element of the cluster munition for the implementation of this method, comprising a case including a cylindrical and bottom hour and, an explosive, a fuse and localizers of crushing the body into fragments made in the form of annular grooves on the outer surface of the cylindrical part of the body, characterized in that the annular grooves are additionally made on the outer surface of the bottom part, which has an animated shape and a length greater than the length of the cylindrical part, while the annular grooves are made with a depth of 35-60% of the thickness of the body (RF patent No. 2277692, application No. 2004124601/02 of 08.08.2004, IPC: F42B 12/66 - prototype).

The specified method is implemented as follows.

The meeting of the striking element with an obstacle causes the fuse to fire. In this case, through the hole in the end of the bottom of the body, the detonation pulse is transmitted to the explosive charge placed in the body, where a symmetrical blast wave is formed. As a result of the explosion, high pressures act on the inner surface of the casing, which leads to the expansion of its walls. Intense stresses arise in the material of the walls, the concentrators of which are annular grooves of rectangular cross section. As a result of this, the housing is divided into rings along the grooves. Further expansion of the rings leads to their spontaneous separation into fragmentation elements. As a result, a fragmentation field is formed, consisting of ring groups of fragments. The casing consists of a cylindrical part and a bottom part of an animated shape, therefore, the ring groups of fragments are evenly distributed in the meridional plane, which leads to the exclusion of the "dead zone" between the ring groups of the cylindrical and bottom parts. The ring groups of fragments of the cylindrical part move towards the surface of the barrier and provide damage in the near zone of the striking element. The ring groups of fragments of the bottom part scatter with elevation angles and provide damage at an ever greater distance as the transition from the cylindrical part of the body to the end of the bottom part.

The disadvantages of this method is that after an organized separation of the housing into rings along the grooves with the formation of several ring groups of fragments of approximately the same mass and size, further separation of the rings occurs arbitrarily, in a chaotic order. This leads to the subsequent formation of fragments of different mass and size and, accordingly, various destructive forces, which ultimately leads to a decrease in the effectiveness of the destructive action of the damaging element of cluster munitions.

The objective of the invention is to remedy these shortcomings and create a method for increasing the fragmentation efficiency of cluster munitions, the use of which will ensure the receipt of fragments of approximately one optimal mass and speed with the technological suitability of the striking element for manufacture.

The solution to this problem is achieved by the fact that in the proposed method for increasing the fragmentation efficiency of a cluster munition containing a body including cylindrical and bottom parts, an explosive, a fuse and localizers for crushing the shell into fragments, which consists in performing localizers for crushing the shell into fragments in the form of ring grooves on the external the surface of the cylindrical part of the body and on the outer surface of the bottom part, according to the invention, said body is made of at least two shells, alloy the inner and composite outer, consisting of several parts isolated from each other, and parts of the said outer shell are formed by separate insulated rings that are mounted on the inner shell so that their side surfaces are in contact with each other, while the annular grooves between the parts of the outer shell form by installing the extreme rings of the mentioned parts at a distance from each other.

In an application of the method, annular grooves are formed by installing smaller spacers between the extreme rings.

In an application of the method, stress concentrators in the form of corrugations are performed on the surface of the rings forming the outer shell.

In an application of the method, the rings forming the outer shell are mounted on the inner shell with interference.

In an application of the method, the annular grooves between the parts of the outer shell perform a depth of 35-60% of the thickness of the housing.

The optimized range of geometric parameters of the annular grooves of the outer shell of the housing created a new aggregate effect that is not inherent in the signs of their disunity.

The implementation of the annular grooves with a depth of 35-60% of the thickness of the body allows you to reduce the number of fragments of small fractions that are not "slaughter". At a depth of less than 35%, an uneven distribution and division into heterogeneous fractions occurs, and at a depth of more than 60%, the strength of the hull decreases.

The set of essential features of the invention allowed guaranteed to obtain a given crushing fragmentation shell of the shell of a cluster munition with semi-finished striking elements that have the necessary technical characteristics of their main action.

The invention is illustrated by drawings, where in FIG. 1 shows a General view of the inventive device for implementing the proposed method, FIG. 2 - the housing of the claimed device, in FIG. 3 is a cross section of a ring.

The proposed method can be implemented using a striking element of cluster munition, comprising a housing 1, including a cylindrical 2 and bottom 3 parts. The housing 1 is made of at least two shells, a continuous inner 4 and a composite outer 5, consisting of several parts isolated from each other. The parts of the composite outer shell 5 are formed by separate insulated rings made in the form of rings of several cylindrical spirals 6 and 7, mounted coaxially one into the other, while the rings of these spirals interact with each other.

On the surface of cylindrical spirals 6 and 7, localizers of crushing rings 8 are made.

Outside the casing 1, at the end of the bottom part 3, a fuse 9 is installed. An opening 10 is made in the bottom part 3 of the casing 1. The fuse 9 is attached to the casing using rolling elements of the fuse 9. Inside the casing 1 there is an explosive charge 11.

Annular grooves - crushing localizers 12 - between the parts of the outer shell 5 are formed by installing the extreme rings of the spirals 6 and 7 mentioned above at a certain distance from each other.

The proposed housing as part of the striking element of a cluster munition can be implemented as follows.

The meeting of the striking element with an obstacle leads to the operation of the fuse 9. In this case, through the hole 10 in the end of the bottom part 3 of the housing 1, the detonation pulse is transmitted to the explosive charge 11, located in the housing 1, where a symmetrical blast wave is formed. The explosion on the inner surface of the inner shell 4 of the housing 1 is affected by high pressures of the detonation products, which lead to the expansion of the walls of the housing. Due to the fact that the housing 1 is made of at least two shells, a continuous inner 4 and a composite outer 5, consisting of several parts isolated from each other, the rings of cylindrical spirals 6 and 7 act as power bandages. In this case, a specific predetermined point in time, the continuous inner shell 4 and the outer shell 5, made in the form of several parts formed by the said rings, inflating together, work simultaneously as a single shell with stiffeners, while the inner continuous shell 4 ensures the tightness of the housing 1 and the outer 5 - strength characteristics of the housing 1. At the same time, due to the fact that the outer shell 5 is made in the form of rings of cylindrical spirals 6 and 7, equipped with crushing locators of the rings 8, seemed rings serve as tires and power to a point in time prevent the destruction of the inner 4 and outer shells 5, which improves the kinetics of the separation of the fragments. Upon reaching the specified pressure of the detonation products inside the housing 1, the inner wall 4 of the housing 1 is destroyed by crushing locators 12 formed by spiral rings 6 and 7, and the rings themselves by crushing locators 8 with guaranteed fragmentation of the fragmentation shell of the munition shell by a specified number of semi-finished striking elements having necessary technical characteristics of their main action. Due to the fact that the outer shell 5 is made in the form of separate isolated from each other rings equipped with crushing locators 8, the rings of the spirals 6 and 7 are not connected with each other and with the inner shell 4. In this case, there is no need to expend part of the energy of the detonation products for their separation from each other and from the shell 4, which allows you to additionally use part of the energy of the detonation products, which was previously used to break the walls of the body and parts of the outer shell into fragments, for increased their kinetic energy without increasing the explosive charge 11.

As a result of this, a fragmentation field is formed, consisting of fragments having approximately equal given mass and geometric dimensions. The casing consists of a cylindrical part 2 and a bottom part 3 of a lively shape, so the groups of fragments are evenly distributed in the meridional plane. There is no "dead zone" between the groups of cylindrical 2 and bottom 3 parts. Groups of fragments of the cylindrical part 2 move towards the surface of the barrier and provide damage in the near zone of the striking element. Groups of fragments of the bottom part 3 scatter with elevation angles and provide damage at an ever greater distance as the transition from the cylindrical part 1 of the body to the end of the bottom part 3.

Using the proposed technical solution will allow you to create a striking element of cluster munitions with the receipt of fragments of approximately the same optimal mass and speed with the technological suitability of the striking element for manufacture.

Claims (10)

1. A method of increasing the fragmentation efficiency of a cluster munition containing a barrel, including a cylindrical and bottom part, an explosive, a fuse and localizers for crushing the shell into fragments, comprising locating crushing the shell into fragments in the form of annular grooves on the outer surface of the cylindrical part of the shell and on the outer the surface of the bottom, while the said body is made of at least two shells, a continuous inner and a composite outer, consisting of several insulators parts from each other, the parts of the said outer shell forming separate insulated rings that are mounted on the inner shell so that their side surfaces are in contact with each other, while the annular grooves between the parts of the outer shell are formed by placing the outer rings of the said parts at a distance from each other from each other, characterized in that the rings of the outer shell are made in the form of rings of several cylindrical spirals, which are installed coaxially one into the other, while ensuring There are interactions of the rings of the mentioned spirals with each other. 2. The method according to p. 1, characterized in that the cross section of the spiral, at least one, preferably all, perform profiled. 3. The method according to p. 1, characterized in that the cross section of the spiral is in the form of a rhombus. 4. The method according to p. 1, characterized in that the cross section of the spiral is made in the form of a parallelogram. 5. The method according to p. 1, characterized in that the cross section of the spiral is made in the form of a square. 6. The method according to p. 1, characterized in that the cross section of the spiral is made in the form of a zigzag. 7. The method according to p. 1, characterized in that at least one surface, preferably on all surfaces of at least one spiral, preferably on all spirals, is applied transverse riffles. 8. The method according to p. 1, characterized in that the cross-section of the spiral is performed in such a way that after installing the spiral, part of the cylindrical surface of the subsequent coil interacts with the cylindrical surface of the previous coil, while the thickness of the layer of the coil is equal to the thickness of the spiral. 9. The method according to p. 1, characterized in that the spirals are installed in such a way that the turns of each subsequent spiral are located with an offset preferably equal to half the thickness of the ring relative to the turns of the previous spiral. 10. The method according to p. 1, characterized in that the spirals are made with different thicknesses in the radial direction, with a decrease from the center to the periphery.

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