Transparent Armor

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Transparent armor (or bulletproof glass) - armor obtained by combining layers of silicate glass (tempered, hardened by chemical etching) with layers of films of polyurethanes, methyl methacrylates, and polycarbonates. The purpose of transparent armor is to protect people, weapons and military equipment from the effects of damaging means - bullets and fragments of ammunition.

Transparent Armor
Transparent Armor
The requirement of optical transparency and the desire to provide increased resistance to impact determine the use of tempered silicate glass or other highly hard transparent materials (for example, sapphire) in the manufacture of transparent armor.

At the same time, a decrease in the tendency to brittle fracture of such materials is achieved, in part, in a constructive way - by compiling a glass block from a number of layers of material joined into a monolith by a transparent polymer adhesive film.

The transparent armor used on military aircraft should have two mandatory qualities: when breaking through with a striking agent, to give a minimum of secondary fragments; when interacting with these agents, to ensure the preservation of transparency on the maximum possible area.

Transparent Armor in a Plane
Transparent Armor in a Plane
The first requirement, which also applies to the glazing of the cockpit canopy, is aimed at eliminating the possibility of defeat or injury of the crew by secondary fragments.

Loss of transparency of bulletproof glass, in particular on single-seat aircraft, is almost equivalent to their incapacitation. According to modern concepts, transparent armor, along with the opaque armor of the cockpit, is one of the elements to ensure the combat survivability of aircraft.

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