Russian development of a bulletproof vest using` `liquid armor '' should be in service with the arrival of the “ Centurion '' military equipment. in the army. According to the information available, the training of the technical task will end in 2021, and the equipment can begin to arrive for the tests and for the troops. AiF.ru analyzed the principle of operation, analyzed the principle of operation and features of the application of this technology in bulletproof vests. & Nbsp;
Softly, but firmly
Earlier in the state company Rostec promised that the equipment of the future soldier “ Sotnik '' due to the 'liquid armor' technology will receive a record weight and the ability to adapt to the anatomical features of the fighter. Because of this, the protection will not hinder movement and allow you to gain the extra weight needed to carry out special missions. & Nbsp;
In this case, the equipment will have increased protection compared to the existing types of bulletproof vests. In the future “ Centurion '' Not only will stop a flying shard at a speed of up to 670m/s, but also extinguish a shock pulse which can cause severe damage to internal organs even without piercing the shield.
What is liquid armor?
The basis of the so-called “liquid armor” & mdash; they are non-Newtonian fluids. A hallmark of these fluids is their ability to acquire the properties of solid materials when exposed to sudden impact. Since the obstacle material undergoes high speed shear deformation under impact, such liquid can be used as a kind of “liquid armor”, hardening under impact – action penetrating knives, sharpening or ballistic impact of bullets or fragments. Since the liquid is very problematic to use as a structural material for the construction of protective structures, it is impregnated with porous multilayer textile armor casings made of high strength, high modulus synthetic materials such as Kevlar, Twaron.
Under normal conditions, an armored package impregnated with a suspension of textile armor remains soft and flexible and does not restrict movement, and when impacted by a bullet or bullet. a fragment, the liquid it contains hardens and thus improves the protective ability of the textile weave. package. Improving the characteristics of bulletproof vests using this technology is only possible with the simultaneous use of Kevlar bags and liquid.
How did it all start?
Beginning of work on “liquid armor” (refer to the mid-1990s, while he was in the United States in the Composite Materials Center at the University of Delaware) under the supervision of teacher. Norman Wagner began researching the ballistic resistance of a textile armor impregnated with a shear thickening (hardening) fluid, briefly referred to as STF. In 2000, this research began to be carried out in collaboration with the Materials Research Laboratory of the US Army Research Laboratory, headed by Dr. Eric Wetzel. The goal of the research was to improve the ballistic resistance of textile armor by drawing on advances in nanotechnology. The first encouraging results were obtained in 2002. Over the next two years, the increased resistance of STF impregnated textile armor to the impact penetration effect of fine and sharp hammers was established, and a STF's production technology and methods for its introduction into a textile weave package has been developed. The US patent for the new armor was obtained in May 2003. & nbsp;
When comparing Russian and Western developments, it should be remembered that most of the characteristics of the armor and the results of its tests are kept secret. However, according to open sources, the UK, US and Poland have developments in this area. As for the UK, their prototype bulletproof vest is known to have the same level of personnel protection as Kevlar, with less weight and more flexibility. Russian developments, like the experiments in the United States, have similar characteristics. Both technologies have been tested for bullets, shrapnel and armor-piercing weapons. Experiments have shown that ours and the US armor have a similar penetration limit (in terms of projectile speed) for a single layer of Kevlar fabric impregnated with 'liquid armor'. & mdash; about 220 m/s. At the same time, in the same experiments, both fabrics showed excellent resistance to stabbing. And from the above, we can conclude that in the near future we should expect a significant increase in the US Army bulletproof vest against small arms and stabbing weapons. According to experts, an increase in the protective properties of British Army bulletproof vests to the appropriate level is to be expected later than in our country and in the States.