On the battlefield, traumatic brain injuries caused by bullets and fragments have always been the most fatal injuries. Therefore, with a good helmet, it is possible for soldiers to avoid death because of this-even more than once. Like body armor, helmets also face conflicts between weight and protection capabilities; unlike body armor, the weight of the helmet is completely borne by the cervical spine, so the human body's tolerance to the weight of the helmet is far less than that of the body armor.
Picture: The K6 titanium alloy helmet used by the Soviet/Russian special forces for a long time. Because the protective mask resembles the welding mask, it is nicknamed the welding helmet
. Early modern helmets are often made of steel. Due to the weight, it is impossible to make very thick. Therefore, the protection capability is quite limited. Therefore, in some occasions that are willing to spend money, such as the wealthy countries of Northern Europe and the special forces of certain countries, they have generally been equipped with titanium alloy helmets-such as the famous Soviet welding helmet. However, the processing cost of titanium alloy is too expensive, and its performance in weight reduction is not particularly good. Therefore, the later helmet materials eventually developed in the direction of high-performance composite materials.
is now the world of plastic helmets
helmet design is good, the suspension system is one of the most influential links
in the 1970s, with the successful development of DuPont’s Kevlar-29 fiber, a new generation Reinforced plastic helmets began to replace metal helmets as the development direction of mainstream military helmets. Beginning in 1983, the U.S. Army first issued PASGT helmets in military operations against Grenada.
However, due to the use of an enhanced double-layer suspension system (improving the comfort and firmness of the soldier’s helmet, and effectively buffering the impact when hit), especially the increased protection area (the ears and part of the neck are also included Due to the scope of protection), the new M88 helmet of the US military is actually 0.2 kg heavier than the original M1 helmet, reaching 1.5 kg.
shooter uses a .45 caliber high-power pistol shooting helmet
Picture: The IIIA helmet is hit by a .45 caliber (11.43 mm) bullet, partially deformed and sunken, but will not be penetrated by the layer of
Pull fiber
flattened pistol warhead, there are still broken Kevlar fiber
on it. Starting from the M88 helmet, the bulletproof capability of modern Kevlar helmets has basically not been greatly improved, generally at the IIIA level; even if it is used The same is true for a new generation of fibers with better ballistic performance than the original. The improvement of the new generation of helmets mainly focuses on weight reduction, enhanced wearing comfort, and increased accessory expansion capabilities-such as providing standardized installation support capabilities for peripheral equipment such as night vision devices, communication equipment, and nuclear, biological and chemical protective masks. The
IIIA level represents the military and police pistol and ammunition that can defend the mainstream at close range, but cannot defend against rifle shooting at close range. The reason for this design is that 75% of battlefield casualties are caused by anti-personnel fragments (cannonballs, bombs, grenades, mines, etc.), and most of the time, the flying speed of such fragments is only half that of rifle shells; the IIIA design is adopted, It can keep the weight within a reasonable range while ensuring that the protection capability requirements are met in most cases.
Picture: The shooter prepares to shoot the helmet with a 5.56mm rifle. In fact, there is no suspense. The IIIA protection standard can only block pistols and submachine guns that fire traditional low-speed pistols at close range. It cannot deal with the genuine rifle
helmet is pierced by high-speed bullets. After penetration, there is only a small hole
on the outside, but the inside has been penetrated, and the broken Kevlar fiber turned out
Picture: After the rifle bullet penetrated the helmet, a shallow pit was punched on the steel target. Such a remnant Kinetic energy is fatal to people.
