UA134068U - ARMY ARMY COMBINED - Google Patents

Abstract

The military helmet combined has a relief surface in the form of a set of regular hollow pyramids with a square base, made of bullet-resistant substance, and a shock-absorbing layer. Between the shock absorber layer and the relief surface of the helmet there is an additional inner protective surface in the form of a Kevlar or metal surface of the helmet.

Description

A military helmet, as a means of protection, belongs to the field of non-lethal weapons, and can be used during military operations, anti-terrorist operations, work of special forces, etc.

Well-known helmets and armored helmets (1-4), made of armored steel, ultra-high molecular polyethylene (NVMPE), or para-aramid material "Kevlar. Helmets protect against small arms bullets, shrapnel and their ricochets. The disadvantage of these helmets and armored helmets is their heavy weight (1 .8 kg - armored steel, and 1.4-1.5 kg - Kevlar), as well as a complex structure with a large number of protective layers, high price.

The famous Kevlar helmet "Kaska 1M" (5), taken as an analogue. It consists of 5 layers and has a low protection class 1a according to NATO. It has the 1st layer - anti-impact plastic, the 2nd layer - Kelar, the 3rd layer - (NVMPE), the 4th intermediate binding intermediate layer, the 5th polyurethane anti-traumatic damper. The disadvantage of this helmet is a complex structure, a low level of protection and a high price.

The well-known military helmet with increased protection |b) is taken as an analogue. On the outer surface of the helmet there are regular pyramids with square bases, made of bullet- and shrapnel-resistant material. In this case, a bullet or fragment, hitting the side inclined surface of the pyramids, undergoes multiple reflections between the surfaces of the pyramids, without reaching the main surface of the helmet. That is, the presence of pyramids on the surface of the helmet reduces the effect of a bullet or fragment on a military helmet, or ricochets, reduces their energy and momentum. With repeated reflection from the surfaces of the pyramids, the energy of the bullet or fragment decreases to a safe value. The disadvantage of this helmet is that the pyramids on the surface of the helmet are monolithic, have a large total weight, which affects the total weight of the helmet. This, in turn, creates inconvenience for helmet users.

There is a well-known relief military helmet |7/|, in which the specified defect has been eliminated, and which is taken as the closest analogue. The helmet has a relief surface in the form of a set of regular pyramids with square bases and made of a bullet-resistant substance and a shock-absorbing layer. Unlike the analogue, the pyramids are hollow inside. The proposed original design of the military helmet makes it possible to reduce the weight of the helmet while maintaining the protection class of the helmet and simplifying its structure. In this case, a bullet or fragment, hitting the lateral inclined surface of the pyramids, undergoes repeated reflection between the surfaces of the pyramids without reaching the shock-absorbing layer. At the same time, the energy and momentum of the bullet or fragment, which act on

From the pyramid or ricochet. The protective shock-absorbing layer, made of elastic material, smoothes the mechanical effect of the helmet on the human body. The normal component of the impulse - Рi, which is transmitted to the body of the pyramid, will depend on the angle of incidence (c) of the ball or fragment on the inclined surface of the pyramid, and is determined by the formula ( 1) |Z, 4):

Ры-(Ро--Р2)soza; (1) where, Po is the momentum of the body - t before the collision with the pyramid,

Ra is the impulse received by the body of the pyramid,

P" - momentum of the reflected body - t,

It can be seen from formula (1) that the normal component of the impulse - P", which is transmitted to the body of the pyramid, will depend on the angle of incidence (c) of the ball or fragment on the inclined surface of the pyramid.

The disadvantage of this helmet is that in case of piercing the side surface of the pyramid, a bullet or a fragment can create a danger to human health and life.

The purpose of the useful model is to increase the protection class of the helmet. The task is solved by the fact that in the military combined helmet, which has a relief surface in the form of a set of regular hollow pyramids with a square base, made of a bullet- and shrapnel-resistant substance, and a shock-absorbing layer, an additional internal protective surface is placed between the shock-absorbing layer and the relief surface of the helmet in the form of Kevlar or metal helmet surface. In addition, the function of the inner protective surface can be performed by a metal mesh.

In this case, the energy and momentum of the bullet or fragment will decrease gradually. First, when punching or bouncing off the inclined surfaces of the pyramids, and then when interacting with an additional internal protective surface. The probability of a bullet or shrapnel hitting a person's body decreases. That is, the level of danger to human health and life decreases.

In Fig. 1 shows the construction diagram of the proposed military combined helmet.

The following designations are introduced: the relief surface of the helmet in the form of a set of regular pyramids made of bullet- and shrapnel-resistant substance, which are hollow inside - 1, the protective shock-absorbing layer - 2, the additional inner protective surface of the helmet - 3.

In Fig. 2 shows a possible diagram of the trajectory of a bullet or fragment upon impact with the pyramids and an additional internal protective surface.

The increased protection of the helmet occurs as follows: a bullet or fragment, moving at a high speed, hits and can penetrate the inclined surfaces of the pyramids - 1. At the same time, the momentum of the bullet or fragment - Po before the collision, decreases gradually. First, when piercing the inclined surfaces of the pyramid -1, (P), and then when interacting with the inner protective surface -

Z, (R).

Rz-(Ro-Ri); (2)

In case of reflection of a ball or fragment from the inclined surfaces of the pyramid-1, the normal component of the impulse - P", which is transmitted to the body of the pyramid, is determined by formula (1). The protective shock-absorbing layer - 2, made of elastic material, smoothes the mechanical effect of the body armor on the human body. At the same time, the energy of the bullet or fragment is reduced to a safe value. That is, the presence of an internal protective surface-3 reduces the effect of a bullet or fragment on the human body, the probability of a bullet or fragment hitting the human body decreases. This leads to an increase in the level of protection of the helmet. This is also facilitated by the possible multiple reflection of a bullet or fragment between the inclined surfaces of the pyramids.

Thus, the proposed design of the military combined helmet makes it possible to increase the level of protection of the helmet. This is achieved by the fact that the helmet has a relief surface, in the form of a collection of regular hollow pyramids - 1, made of a bullet- and shrapnel-resistant substance, and also by the fact that an additional internal protective surface, in the form of thin Kevlar or metal, is placed between the shock-absorbing layer and the relief surface of the helmet surface

In addition, the function of a protective surface can be performed by a metal mesh. As a result, it will lead to the preservation of human life.

Sources:

PI. Kevlar helmet With protection class - Access mode: rgot.tsa/Kemiagomaua-Kkazka. sweat -

Name from the screen. (2. Kevlar helmet zpybey - Access mode: m/mly.toipegdip.sot.tsa/paeh.ryr?rgodiki ia-1798goshe-rgodysurgodisi - Title from the screen.

IZI Kevlar helmet Mk-6. Misp. - Access mode: rgot.tsa/Kemiagomu|-5PIet.piti - Name from the screen.

HER. Armored helmet Israel - Access mode: aptoiiipe.sot.tsa/r48950782-5pIet-razai-eiaIpo). Niti - Name from the screen.

IBI Kevlar helmet "Caska 1M" - Access mode: rgot.tsa/Kemiagomu|-5PIet. Niti - Name of

From the screen.

I6Y. Bernatsky V.A. Military helmet with increased protection. Patent of Ukraine for a utility model Mo 99558 dated 06/10/2015. Bul. Mo 11.

ГІ/. Bernatsky V.A. The military helmet is embossed. Patent of Ukraine for a utility model Mo 111895 dated November 25, 2016. Bul. May 22.

Claims (1)

USEFUL MODEL FORMULA Combined military helmet, which has a relief surface in the form of a set of regular hollow pyramids with a square base, made of bullet- and splinter-resistant substance, and a shock-absorbing layer, which is distinguished by the fact that an additional internal protective surface is placed between the shock-absorbing layer and the relief surface of the helmet in in the form of a Kevlar or metal helmet surface.