RU2351884C1 - Method of piercing obstacle by subcaliber armour-piercing core shell and shell to this effect - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: in compliance with the proposed method, formation of fragmentation field in piercing is provided for by decelerating load-bearing device along with its sequential destruction into separate fragments and accelerating them radially. The shell comprises a subcaliber armour-piercing core attached to the shell casing along the lengthwise axis of the latter with the help of load-bearing device furnished with tapered surfaces with their apexes facing the flight direction. Note that the said load-bearing device represents rings arranged on the said tapered surfaces and furnished with strain concentrators.

EFFECT: higher efficiency due to lower load on core and formation of extra fragmentation effect.

2 cl, 4 dwg

Description

The present invention relates to military equipment, and in particular to methods and devices for penetrating armor with shells with a sub-caliber armor-piercing core, and can be used in the construction of small-sized missile systems.

There is an analogue of the method of penetrating armor with a projectile with an armor-piercing armor-piercing core, including penetrating armor, braking the support device against the armor while the core comes out of it (armor-piercing armor-piercing shell, “Artillery and Missiles”, military publishing house of the USSR Ministry of Defense, Moscow - 1968, p. 128 , 129). The projectile has a master device, which is the support of the projectile during acceleration (projectile body), and a ballistic fairing. The sub-caliber armor-piercing core is accelerated in the barrel by a reel-type support device and flies to the target in it, when the arm hits the armor, the support device is braked, and the armor-piercing core leaves it and penetrates the obstacle.

The disadvantages of this method of hitting a target is that when braking the support device is plastically deformed along the entire length, friction forces slow down the core, thereby reducing its speed and, accordingly, armor penetration.

There is a method of penetrating an obstacle with a rocket with a sub-caliber armor-piercing core, selected as a prototype, including its penetration into the obstacle and the formation of a fragmentation field of destruction at the time of penetration (patent RU 2108537 C1, 6 F42B 12/06, 15/00 p. 10). The rocket mounted fragmentation sections for firing at structures. At the same time, the finished damaging elements of the fragmentation sections create an additional damaging effect due to the fragmentation effect. As the explosive charge, an unspent fuel charge in the engine is used. At the same time, the combat effectiveness of hitting targets increases and the missile acquires universal properties.

The disadvantages of this method of breaking through the barrier is that the fragments are scattered by the residual charge of fuel, therefore, when the fuel charge is completely burned out, the fragments will not have an additional expansion speed when breaking through thick-walled armor, because their mass is small - they will be delayed by an obstacle. At the same time, the passive mass of the rocket increases, the caliber increases, and the energy of the supporting device is used inefficiently when firing at the armor.

Known rocket, selected as a prototype (patent RU 2108537 C1, 6 F42B 12/06, 15/00), comprising a housing with a charge of solid fuel and armor-piercing rod, placed in the charge of solid fuel along its longitudinal axis. An armor-piercing rod is fastened to the front bottom of the hull by a support device in the form of struts rigidly connected to the rocket hull. The rocket mounted fragmentation sections for firing at structures. At the same time, the finished striking elements of the fragmentation sections penetrating the well punched by the rod create a powerful back-off effect. As the explosive charge, an unused solid fuel charge is used.

The disadvantage of this device is that the elements of the rocket body, support device and rocket body are randomly destroyed, which leads to a decrease in armor penetration due to interaction with the rod. The fragments are scattered by the residual charge of fuel, therefore, when the fuel charge is completely burned out, the fragments will not have an additional expansion speed even when a thick-walled armor is pierced, because their mass is small - they will be delayed by an obstacle. At the same time, the passive mass of the rocket increases, the caliber increases, and the energy of the supporting device is used inefficiently when firing at the armor.

The objective of the invention is to increase combat efficiency by reducing the impact of the supporting device and the shell of the projectile on the core and communicating additional properties, namely, fragmentation effects.

The solution to this problem is achieved by breaking through an obstacle with a projectile with a sub-caliber armor-piercing core installed in the support device, including braking the support device against the obstacle, leaving the armor-piercing core out of it and penetrating it into the obstacle, and creating a fragmentation field of destruction at the time of penetration, while braking the support devices sequentially destroy it into separate fragments, while simultaneously informing them of radial acceleration.

The proposed method is implemented by a projectile containing a sub-caliber armor-piercing core fixed along the longitudinal axis to the shell of the projectile by means of a support device, while the armor-piercing core is provided with conical surfaces whose vertices are facing in the direction of flight, and the supporting device is made in the form of rings mounted on conical surfaces, and equipped with stress concentrators.

The proposed method and device can reduce the inhibitory effect of the supporting device and tell him the radial speed, which will ensure the defeat of instruments and devices on the surface of the armor, in addition, during radial expansion destroy the body, which reduces its effect on the process of armor penetration.

The invention is illustrated in graphic materials.

The drawings show:

Figure 1 - shell;

Figure 2 - the initial moment of armor penetration by the core of the obstacle and the radial expansion of the supporting device;

Figure 3 - the moment of penetration of the core into the barrier and the radial expansion of the supporting device;

Figure 4 - reference device in the context of the voltage concentrators.

The positions in the drawings indicate:

1 - obstacle, 2 - body, 3 - armor-piercing core, 4 - supporting device, 5 - conical surfaces of the armor-piercing core, 6 - voltage concentrator.

The proposed method is implemented as follows.

When a rocket hits the barrier 1, the body 2 of the front of the projectile partially collapses and collapses, the armor-piercing core 3 enters the barrier to the front support device 4 located on its conical surface 5. The support serves to center the core and transfer lateral loads from it, thereby increasing its stability and lowering the overturning moment at the moment of penetration into the barrier. In the process of armor penetration, the core with its conical surface gives radial acceleration to the supporting device, it is destroyed by voltage concentrators 6 into fragments, fragments destroy the body, flying apart at high speed and can hit various functional blocks located on the surface of the obstacle. When the core enters the barrier, the next support device is braked against it, and the core gives its conical surface to the support device radial acceleration. As a result, the destruction of the supporting device occurs sequentially, which decreases the effect on the braking of the armor-piercing core. The supporting device creates an additional striking effect for blocks located on the surface of the barrier.

Thus, the proposed method of hitting a target with a projectile and a projectile for its implementation allows to increase armor penetration by reducing the impact of the supporting device and the shell of the projectile on the core and to increase combat efficiency, namely, the possibility of hitting fragments of the supporting device of various blocks located on the obstacle surface without increasing the caliber and passive mass.

Claims (2)

1. A method of breaking through an obstacle with a projectile with a sub-caliber armor-piercing core installed in a support device, including braking the support device about the obstacle, leaving the armor-piercing core with penetration into the barrier and the formation of a fragmentation field of destruction at the time of penetration, characterized in that the formation of a fragmentation field of destruction in the moment of penetration is ensured by successive destruction of the support device into individual fragments and simultaneous communication of radial acceleration to them when braking op molecular weight of the device. 2. A projectile containing a sub-caliber armor-piercing core fixed along the longitudinal axis to the shell of the projectile by means of a supporting device, characterized in that the armor-piercing core is made with conical surfaces, the vertices of which are turned in the direction of flight, and the supporting device is made in the form of rings mounted on conical surfaces , and is equipped with stress concentrators.

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