RU2210723C2 - Shaped warhead - Google Patents

Abstract

FIELD: blasting operations, applicable for piercing of complicated obstacles. SUBSTANCE: the shaped warhead has a body, at least two explosive charges with a protective screen between them installed for movement under the action of the explosion products; at least one of the charges is provided with an explosive device with a contact firing panel located between the protective screen and the charge, the protective screen has a different thickness with a thinning to the warhead axis. The protective screen may be made in the form of a truncated cone, the smaller base of the truncated cone faces the warhead nose compartment. The contact firing panel of the explosive device is made in the form of a truncated cone facing the warhead nose compartment. EFFECT: enhanced armor piercing of obstacles. 4 cl, 2 dwg

Description

 The invention relates to the field of blasting and can be used to break through complex obstacles.

Known warhead (warhead) (patent RU 2062439 "Cumulative tandem warhead", published 06/20/96, Bull. 17, F 42 V 12/18), including two cumulative charges (main and additional), each of which is installed separately case, with a protective screen between them. Part of the warhead housing between charges is made in the form of a truncated cone. The angle between the generators of these cones is 100-150 ^o , and a protective shield is installed in the area of their joint by means of a cut-off shank. The screen is moved by the products of the explosion of the additional charge and closes the contact device to undermine the main charge.

 Known for another tandem cumulative warhead, selected as a prototype, according to the patent of Germany 3605580, published 04.06.87, F 42 B 12/10.

 This warhead contains a housing with two cumulative explosive charges (explosives), one of which is primary, the other is secondary. The explosive charges are separated by a protective shield that moves under the action of the explosion products of the additional explosive charge and closes the contact contact of the explosive explosive device to detonate the main explosive charge. A contact contactor is located between the protective shield and the base of the cumulative lining of the main explosive charge.

 The disadvantages of the known solutions is that the protective screen has a significant thickness and weight, since the main charge must be reliably protected from explosion products. This leads to loss of armor-piercing action of the cumulative jet of the main charge when passing through a protective shield.

 The challenge to which the present invention is directed is to further increase the power of the cumulative warheads.

 The technical result of the proposed solution is to increase the armor penetration of the warhead.

 The claimed technical result is achieved by the fact that in a cumulative warhead including a housing and at least two cumulative explosive charges, separated by a protective screen mounted to move under the action of the explosion products of one of the charges, while at least one of the explosive charges is equipped with an explosive a device with a contact closure located between the protective screen and the charge, the protective screen is made of different thickness, with thinning to the axis of the warhead. A delay in the detonation of another explosive charge is created due to deformation of the thinned zone of the protective shield and its closure of the contact closure of the explosive device of this charge after some time (delay time). The distance along the warhead axis between the protective shield and the contact closure of the explosive explosive charge device provides the necessary delay time. The protective screen is made in the form of a truncated cone, the smaller base of which is facing the bow compartment of the warhead. The contact closure of the explosive device is made in the form of a truncated cone, with a smaller base facing the nose of the warhead.

 The use of a screen of different thicknesses with thinning to the axis of the warhead makes it possible to reduce the loss of armor-piercing action of the cumulative jet of the main charge, since the latter moves along the axis of the warhead, where the thickness of the screen is less and less its negative effect on the jet. In addition, the thickness of the protective screen with thinning to the axis of the warhead allows you to achieve a certain front distribution of the explosion products of one of the explosive charges. This distribution makes it possible, due to the explosion products, to carry out the movement and deformation of the protective shield in the zone of the warhead axis and to close the contact closure of the explosive device. At the same time, the non-deformable part of the protective shield allows you to protect other components of the warhead from exposure to explosion products.

 The implementation of the protective screen in the form of a truncated cone makes it possible to reduce the effect of the explosion products along the warhead axis by cutting the front of the explosion products and moving them from the warhead axis to the explosive charge housing, where the thickness of the shield is greater.

 The rotation of the truncated cone of the protective shield with a small base towards the nose compartment of the warhead allows for a more optimal dissection of the front of the explosion products while ensuring the required deformation of the protective screen.

 This embodiment of the screen allows you to increase the armor-piercing effect of warheads in general.

 The execution of the contact closure of the explosive device in the form of a truncated cone, with a smaller base facing the nose compartment of the warhead makes it possible to accurately set the gap between the protective screen and the contact contact of the explosive device itself, thereby ensuring the required delay time between the operation of explosive charges, which is directly related to an increase in armor-piercing action of warheads.

Figure 1 presents a General view of the inventive device cumulative tandem warhead, where the following positions are indicated:
1 - case;
2 - additional explosive charge;
3 - the main explosive charge;
4 - a protective screen;
5 - a piezoelectric generator;
6 - contact closure of the explosive device;
7 - ring;
8 - explosive device of the main explosive charge;
9 - explosive device of an additional explosive charge;
10 - fairing;
11 - shaper detonation wave.

 An example of a specific implementation of the claimed device is a tandem cumulative warhead, comprising a housing (1) with two (primary and secondary), located one after another cumulative explosive charges. The additional charge (2) is activated by the explosive device of the additional charge (9), which receives an electrical impulse from the piezoelectric generator (5) when the warhead hits the target. To protect the main explosive charge (3) from fragments and explosion products of an additional explosive charge (2), a protective shield (4) is mounted on the housing (1). The protective screen (see figure 2) is made of steel, with thinning to the axis of the warhead. The thickness of the screen (4) in the case (1) is 2.2 times greater than that of the axis of the cumulative warhead (for the axis of the warhead-1.35 mm, in the case of the warhead-3 mm). The contact closure of the explosive device (6) is mounted on the ring (7), which is located at the base of the cumulative lining of the main explosive charge. The contact closure of the explosive device has a convex shape in the form of a truncated cone and is made of aluminum alloy.

The operation of the warhead is as follows:
- the use of an additional explosive charge (2) occurs after the destruction of the fairing (10) when it hits a target, the piezoelectric generator (5) is triggered, and an electric pulse is supplied to the explosive device of an additional explosive charge (9). After undermining the additional explosive charge (2, under the action of the explosion products, the protective shield (4) moves. The protective shield acts as the main charge (3), after its movement, the contact closure of the explosive device (6) is closed and through the ring (7) and the body ( 1) an electric signal is supplied to the explosive device of the main explosive charge (8). The detonation pulse of the explosive device of the main explosive charge (8) initiates the main explosive charge (3) through the detonation wave former (11), as a result of which it triggers whining and the formation of a cumulative jet.

 The thickness difference of the protective shield (4) (its smaller thickness along the axis) allows to reduce the energy loss of the cumulative jet when it is pierced.

 Thus, the presence of a different thickness protective shield (4) with thinning to the axis in the warhead design allows increasing the value of armor penetration and ensuring the stability of its achievement.

Claims (4)

 1. Cumulative warhead, comprising a housing, at least two explosive charges with a protective shield between them, installed with the ability to move under the action of explosion products, while at least one of the charges is equipped with an explosive device with a contact closure located between the protective screen and the charge, characterized in that the protective screen is made of different thickness, with thinning to the axis of the warhead.  2. The cumulative warhead according to claim 1, characterized in that the protective shield is made in the form of a truncated cone.  3. The cumulative warhead according to claim 2, characterized in that the smaller base of the truncated cone of the protective shield faces the bow compartment of the warhead.  4. The cumulative warhead according to claim 1, 2, or 3, characterized in that the contact closure of the explosive device is made in the form of a truncated cone, the smaller base facing the bow compartment of the warhead.

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