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In warfare, high-explosive incendiary (HEI) is a type of ammunition specially designed to impart energy and therefore damage to its target in one or both of two ways: via a high-explosive charge and/or via its incendiary (fire-causing) effects. Each round has both capabilities.
The triggering of the explosive charge is dependent upon the resistance of the target. If the target offers little resistance then the lack of frictional heating will prevent the incendiary from igniting and the high explosive from detonating. Exploding ammunition was used by both Allied and German forces during World War II.
Some explosive projectiles, such as high-explosive incendiary bullets, contain an incendiary charge intended to ignite explosives within the shell. [9] Although not intended to start fires, tracer bullets can have a mild incendiary effect. This is particularly dangerous when they strike flammable substances or dry brush.
The GAU-13/A uses the same range of PGU-13 High Explosive Incendiary (HEI) and PGU-14 Armor-Piercing Incendiary (API) rounds (which contain a depleted uranium penetrator) as the Avenger. Despite its somewhat lower rate of fire compared to the seven-barreled Avenger, it is an immensely powerful weapon.
An explosive charge would then ignite the incendiary material, often starting a raging fire. The fire would burn at extreme temperatures that could destroy most buildings made of wood or other combustible materials (buildings constructed of stone tend to resist incendiary destruction unless they are first blown open by high explosives).
R1AFA = 120 rounds of 20 mm High Explosive-Incendiary M97 (T23) Cartridge with M75 (T71E5) Point-Detonating Fuze. 10 rounds per moisture-sealed fiberboard container, 12 containers per wooden packing crate. Net Weight = 68.4 lbs. Gross Weight = 95 lbs. Volume = 1.45 cubic feet.
German authorities have warned businesses that packages containing incendiary devices had caught fire en route across Europe and that more such parcels could be circulating, a letter to companies ...
FZAB - high-explosive incendiary bomb. They are a combination of FAB and ZAB in one body. When a bomb is detonated, the incendiary part detonates first, and then the high-explosive part. ZB - incendiary tank. They are ZAB in a thin-walled casing without a stabilizer and without an explosive charge.