RU2486456C1 - Method of increasing fragmentation efficiency of cassette shot hitting element - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: cassette shot hitting element comprises case with cylindrical and bottom parts, explosive, fuse and case fragmentation localisers. Proposed method consists in making localisers of crushing case into splinters in the form of annular grooves made on cylindrical part outer surface and bottom part outer surface. Case is composed by two shells, solid inner shell and composite outer shell consisting of several isolated parts. Parts of outer shell are formed by separate isolated rings. Rings are fitted on inner shell to allow their side surfaces heat in contact there between. Annular grooves between outer shell parts are made by fitting extreme rings of outer shell parts so that they are spaced apart.

EFFECT: higher fragmentation efficiency.

5 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.

A known method of increasing the fragmentation efficiency of a cluster munition containing a shell, including cylindrical and bottom parts, an explosive, a fuse and localizers for 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 tee, explosive, fuse and localizers crushing the body into fragments made in the form of annular grooves on the outer surface of the cylindrical part of the housing, 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 08/12/2004, 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 a greater distance as the transition from the cylindrical part of the body to the end of the bottom part.

The disadvantage of this method is that, after an organized separation of the body 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, reduces 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 a cylindrical and bottom part, an explosive, a fuse and localizers for crushing the body into fragments, which consists in performing localizers for crushing the body 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, sp 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 figure 1 shows a General view of the inventive device for implementing the proposed method, figure 2 - the housing of the claimed device, figure 3 is a cross section of the 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. Localizers crushing the housing 1 into fragments is performed in the form of annular grooves 6 on the outer surface of the housing.

The parts of the composite outer shell 5 are formed by separate insulated rings 7 mounted on the inner shell 4 so that their side surfaces are in contact with each other. The annular grooves 6 between the parts of the outer shell 5 are formed by installing the extreme rings 7 at a certain distance from each other. On the surface of the rings 7 perform localizers crushing rings 8.

Outside the casing, 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. An explosive charge 11 is placed inside the casing.

The proposed method can be implemented using the proposed striking element of cluster munition as follows.

The meeting of the striking element with an obstacle leads to the operation of the fuse 9. At the same time, 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 7 act as power bandages. In this case, a certain predetermined point in time, the continuous inner shell 4 and the outer shell 5, made in the form of several parts formed by rings 7, swelling 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 7, provided with crushing locators of the rings 8, the rings 7 act as power bandages minutes until 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 shell 1, the inner wall 4 of the shell 1 is destroyed by crushing locators 6 and rings 7 by crushing locators 8 with guaranteed crushing of the fragmentation shell of the munition shell for a given number of semi-finished striking elements having the necessary technical characteristics of their main action. Due to the fact that the outer shell 5 is made in the form of separate rings 7 isolated from each other, provided with crushing locators of the rings 8, the rings 7 are not connected with each other and with the inner shell, but, at the same time, play the role of power bandages. In this case, there is no need to expend part of the energy of the detonation products to separate them 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 into fragments, to increase their kinetic energy without increasing the explosive charge power substances 11.

As a result of this, a fragmentation field is formed, consisting of fragments having approximately equal given mass and geometric dimensions. The housing 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 (5)

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 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 the bottom surface, characterized in that the said body is made of at least two shells, a continuous inner and a composite outer, consisting of several their parts isolated 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 apart from each other. 2. The method according to claim 1, characterized in that the annular grooves are formed by installing smaller spacers between the extreme rings. 3. The method according to claim 1, characterized in that on the surface of the rings forming the outer shell, perform stress concentrators in the form of corrugations. 4. The method according to claim 1, characterized in that the rings forming the outer shell are mounted on the inner shell with interference. 5. The method according to claim 1, characterized in that the annular grooves between the parts of the outer shell perform a depth of 35-60% of the thickness of the housing.

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