RU2706771C2 - Ribbed armor protection - Google Patents

Abstract

FIELD: weapons.

SUBSTANCE: present technical solution is intended for protection of armoured vehicles, mainly tanks, against their destruction by all types of shells, including cumulative, when they hit the front armour of the tank. Front armour of the tank is a ribbed armoured plate, the ribs of which are directed towards the action of the projectile, and takes into account the features of the design of the shaped projectile and the shape of the ballistic curve along which the shell is moving. Calibre of projectile is taken into account by height of ribs which are less than or equal to 0.5 of projectile gauge. Upon projectile hitting the frontal armour, the funnel-shaped shape of the shell explosive and its neutralization are destroyed. Distance between ribs takes into account shape of ballistic curve, along which projectile moves, and should be equal to 1.4–2.5 of projectile calibre. When sub-calibre shells fall they have to pierce armour with thickness of approximately 250 mm, which is unlikely. Missile of hard steel plug type from ribbed armour ricochets downwards.

EFFECT: technical result is protection of tank body and its crew from cumulative, sub-calibre projectiles and projectiles of hard steel plug type.

1 cl, 2 dwg

Description

This technical solution is intended to protect armored vehicles, mainly tanks, from hitting them with all types of shells, including cumulative, when they hit the frontal armor of the tank.

A known method of protecting armor of a tank from cumulative and passive shells. [RU (11) 68675 (13) U1] In accordance with this technical solution, a removable panel is made of armored steel, suspended by the upper part of the side armor of the tank. This panel in its design has armor plates that provide projectile rebound up or down. In addition, there is a free-hanging “bulwark”, which provides protection for the side of the tank from cumulative shells.

This panel is a complex design and is of little use for protecting the frontal armor of a tank. (51 IPC F41H 7/04 (21) 2007122019/22 (24) 06/15/2007) In addition, it is extremely difficult to use it in the field.

Another technical solution, taken as a prototype, is also known: multilayer armor protection (RU (11) 68674 (13) 41 BIPM No. 33, 11/27/2007) It represents a multilayer armor protection consisting of several layers of high-strength steel, mild steel substrate, ceramic elements a certain form, connected by a highly plastic substance such as polyurethane or another similar substance and 4-30 layers of materials such as Twaron, Xevlar, Rusar, Tevsar. This design of the armor of the tank, although it is suitable for the manufacture of frontal armor, is extremely difficult to manufacture and repair.

The proposed technical solution takes into account the design features of the cumulative projectile and the ballistic curve along which it moves.

The striking essence of the cumulative projectile is the funnel-shaped form of the explosive of the projectile. It is assumed that the cumulative projectile moves along a ballistic curve close to a parabola.

The protective properties of the ribbed armor are carried out due to the destruction of the funnel-shaped form of the explosive of the projectile at the moment of contact with the armor plate.

Since the armor plate is made ribbed, with a height of ribs of 0.5 (or less) caliber of the projectile, then at the moment of impact the inevitable destruction of the funnel-shaped explosive of the projectile will occur.

For a more complete destruction of the explosive, it is necessary that the width of the rib of the armor plate be greater than the conical part of the projectile, i.e. it should be 1.4-2.5 caliber projectile. Even if a cumulative projectile is triggered, then with this ratio of the sizes of the ribs of the armor plate, a cumulative jet is not formed.

When used against such armor, sub-caliber shells, they will have to penetrate armor 140-250 mm, which is unlikely.

The use of the proposed technical solution does not exclude other methods of protecting the frontal armor of tanks.

The work of the proposed technical solution is illustrated by drawing No. 1 and 2, which shows a diagram of the destruction of the funnel-shaped explosive form of a cumulative projectile, where:

in FIG. 1 is a view of a ballistic curve along which a projectile (parabola) moves,

in FIG. 2 - destruction of the cumulative charge of the projectile at the moment of contact with ribbed armor protection.

Claims (1)

The frontal armor of the tank, designed to protect the hull of the tank and its crew from the effects of all types of shells, including cumulative, characterized in that its outer surface is ribbed with a height of ribs less than or equal to

the caliber of the cumulative projectile acting on it, the distance between the ribs is equal to 1.4-2.5 caliber of this projectile, and the ribbed surface is directed towards the projectile acting against it and makes the armor contact with the upper "cheek" of the projectile at the moment of their contact.

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