RU99140U1 - SECURITY MODULE - Google Patents

Abstract

 A bulletproof module consisting of consecutively located protective blocks, characterized in that the rear block (shock-absorbing and damping) is made according to the combined scheme and consists of: 10 layers of high-modulus non-spun fiber fabric glued with a polyethylene film and impregnated with a polymer binder; 10 layers of microfilament para-aramid yarns with a linear density of 29.4 tex impregnated with a polymer binder; plates made of impact polystyrene with a thickness of 8 mm with a ten-layer bag fastened on an adhesive basis from the high-modulus fabric TSVM-2, while the rear unit is placed in a waterproof case.

Description

The proposal for a utility model relates to the field of armored vehicles and equipment. The proposal is aimed at increasing the armor-protective parameters of protective structures due to the implementation of directional changes in the trajectory of the striking high-speed element.

Known bulletproof flexible design (Russian patent No. 2116607 MKI F41H 1/02), the essence of which is that it contains protective elements in the form of parts made of solid material with the reflecting side facing outward. Protective elements are located in the elastic base material. They are not interconnected and are located in the base in several layers with overlapping gaps between the elements in the layer by subsequent layers of protective elements. The reflecting side of the protective element is made in the form of a cylindrical surface. The disadvantage of this bulletproof flexible design is that unsecured protective elements do not significantly change the trajectory of a high-speed bullet. To achieve the desired effect, the protective elements must be rigidly fixed to the base, or otherwise, the number of layers from these protective elements should be large enough, which will lead to a significant increase in the mass parameters of the structure

The closest solution to the technical nature and the achieved result of the proposed utility model is a bulletproof barrier (Russian patent No. 84099 MKI F41H 1/02), the essence of which is that it contains three blocks: the front one, consisting of a matrix having cellular geometry with through holes; an intermediate block made in the form of a metal (or ceramic) plate with non-through hemispherical holes that are filled with glue on an adhesive basis with abrasive chips and a rear block made in the form of an aluminum substrate with a twenty-layer bag made of high-modulus TSVM-2 fabric fastened on an adhesive basis. Despite the sufficient protective properties of this bulletproof barrier, its shock-absorbing and damping properties require improvement.

The essence of the proposed model is illustrated in the drawing (figure 1). The bulletproof module consists of three block blocks: frontal, consisting of a matrix of a viscoelastic alloy (1), having a cellular geometry with through holes (2). The holes in the matrix are made at an angle of 30 degrees, as indicated in the drawing. The diameter of the holes is 10 mm, the thickness of the matrix is 30 mm. The second (intermediate) block is made in the form of a metal (or ceramic) plate (3) with a thickness of 15 mm with through holes not hemispherical, which are filled on an adhesive basis with abrasive chips (4). The diameter of the holes is 10 mm, they are made according to cellular geometry. Block 2 with block 1 is aligned with the holes. The back block (5) (depreciation-damper) is made according to the combined scheme and consists of 10 layers of high-modulus fabric (5a) of untwisted fiber glued with a film of polyethylene and impregnated with a polymer binder; 10 layers of microfilament para-aramid filaments (5b) with a linear density of 29.4 tex impregnated with a polymer binder; impact polystyrene plates (5c) with a thickness of 8 mm. with a ten-layer package (5 g) fastened on an adhesive basis from the high-modulus fabric TSVM-2. The back unit is housed in a waterproof case.

Distinctive features of the prototype is the overall design of the rear (depreciation-damper) unit and its components.

When a bullet enters the proposed design, a directed change in its path occurs in block 1. Next, the bullet interacts with abrasive chips, where part of its kinetic energy is lost. With further movement of the bullet, its nose is poked into the concave hemisphere of block 2 and a further turn of the trajectory of movement. In block 3, further dissipation of the bullet energy occurs due to the absorption of shock waves.

The results of the experimental shooting at the bulletproof barriers of the proposed design confirm their high protective and shock-absorbing-damping functions for the whole range of bullet speeds of typical small arms, which allows us to recommend them as protective elements of equipment and objects.

Claims (1)

A bulletproof module consisting of consecutively located protective blocks, characterized in that the rear block (shock-absorbing and damping) is made according to the combined scheme and consists of: 10 layers of high-modulus non-spun fiber fabric glued with a polyethylene film and impregnated with a polymer binder; 10 layers of microfilament para-aramid yarns with a linear density of 29.4 tex impregnated with a polymer binder; plates made of impact polystyrene with a thickness of 8 mm with a ten-layer bag fastened on an adhesive basis from the high-modulus fabric TSVM-2, while the rear unit is placed in a waterproof case.