To provide protection class Br1, С and S2 (not less than 550 m/s) GOST 34286-2017 "Armor clothing. Classification and general technical requirements "use soft armored packages, consisting of several layers of aramid fabric of various surface densities and types of weaving. The most promising are armored packages consisting of fabric weaving, with a surface density of 0.130 kg/m2 and higher.

Keywords: soft armor pack, protection class Br1, protection class C, protection class S2 (not less than 550 m/s) armor protection, ballistic protection, aramid fabric, individual armor protection equipment

Abstract: armor plates made of armored steel or combined armor plates made of hard ceramic material and an aramid or polyethylene substrate are used to provide Br4 and Br5 levels of protection according to GOST 34286-2017 “Armored clothing. Classification and general technical requirements.” The most promising armor plates are those that include a ceramic layer and an aramid substrate. Steel armor plates are currently the most common in the Russian army, however, their heavy weight is a significant drawback. This paper describes the selection of composite structures and the manufacture of their prototypes for ballistic purposes. The paper also presents the results of the ballistic tests.

Keywords: ceramic composite armor panel, Br4 level of protection, Br5 level of protection, armor protection, ballistic protection, aramid fabric

The article is devoted to the study of abrasion resistance of special textile materials in conditions of cyclic freezing. A research technique has been developed for special water-repellent textile materials to identify their strength characteristics to abrasion, depending on their density and the effect of freezing. Experimental studies of three groups of material samples are presented taking into account their surface density and fibrous composition (natural, mixed and synthetic). The influence of cyclic freezing time on the abrasion resistance of special textile materials is investigated.

Keywords: textile materials, abrasion resistance, wear, cyclic freezing

Because the issues related to the calculation and design of the cable properties of the products, determining the impact of various factors on their physical and mechanical properties, has hardly been mentioned in the literature, it is of interest consider these questions with regard to features braided and twisted ropes.

Keywords: woven products, strands, woven products, ropes, weave