Subcaliber ammunition

[andretalbert059]

<br><br>BPS with non-detachable ballistic pan<br><br>Subcaliber ammunition – ammunition, the diameter of the warhead (core) of which is less than the diameter of the barrel. Most often used to combat armored targets. The increase in armor penetration compared to conventional armor-piercing ammunition occurs due to an in the initial speed of ammunition and specific pressure in the process of penetrating armor. For the manufacture of the core, materials with the highest specific gravity are used – based on tungsten, depleted uranium and others. To stabilize the flight of modern sub-caliber ammunition, as a rule, the plumage is used.<br>Description<br>Subcaliber armor-piercing projectiles are designed to destroy heavily objects, in particular tanks. Such a projectile, as a rule, has neither a fuse nor an explosive charge; its armor-piercing effect is entirely due to the kinetic energy of the projectile.<br><br>A sub-caliber armor-piercing of a reel-to-reel or other shaped body (pallet), into which a heavy core is inserted with a diameter usually about three times smaller than the caliber of the gun. The material for the core is sintered carbide alloys with high strength and hardness. In the middle of the 20th century, this role was mainly played by tungsten carbide; later, heavy-alloy cores made of depleted uranium or tungsten alloys became widespread. The pallet ensures the retention of the core in the barrel, and serves as a kind of piston, taking on the gas pressure when fired, thereby ensuring the acceleration of the entire projectile. Due to the lower than that of a conventional armor-piercing, projectile mass, the muzzle velocity of the sub-caliber ammunition increases significantly (according to some sources, up to 1700 m / s versus 800-1000 m / s), which provides an increase in armor penetration.<br><br>When a projectile hits the armor, a massive core punches a hole in it with a small diameter, while its kinetic energy is partially spent on destroying the armor, but most of it turns into heat. Fragments of the core and armor heated to high temperatures fly into the armor space in a diverging cone, striking the tank’s crew, incapacitating mechanisms and equipment and creating numerous sources of ignition. In addition, depleted uranium cores, due to their high pyrophoricity, ignite spontaneously during destruction.<br><br>In terms of their action, APCR shells have significantly higher armor penetration than APCR shells. During Operation Desert Storm, tank units of the US Armed Forces as part of the coalition forces used the M829 armor-piercing projectile – a depleted uranium sub-caliber projectile – to hit targets at distances of up to 3000 m.<br>Varieties<br>There are different types of design of sub-caliber ammunition:<br>With a non-detachable pallet (English Armor-piercing, composite rigid, abbreviated APCR) – is a body of a projectile made of light metal with a hard-alloy core. The entire flight to the target, such a projectile passes as a single whole, and in the process of penetrating the target’s armor, only the core is involved, which is separated from the pallet when it collides with the armor. Comparatively high aerodynamic resistance (as in a conventional armor-piercing projectile) with a low mass leads to a significant drop in armor penetration and accuracy with distance.With a non-detachable pallet, for use with a tapered barrel (Armor-piercing, composite non-rigid, abbreviated APCNR) – the design of the pallet ensures its crushing when passing along a special tapered barrel, thereby reducing the cross-sectional area of ​​the projectile and reducing the .With a detachable pallet (English Armor-piercing, discarding-sabot, abbreviated APDS) – the design of the projectile after the barrel ensures that the pallet is stripped from the core by the oncoming air flow or, in the case of a rifled weapon, by centrifugal force. Due to the small diameter of the core, low air resistance during flight is provided.Armor-piercing, fin-stabilized, discarding-sabot, abbreviated APFSDS) is an APFSDS projectile, where the core is provided with a small tail to ensure flight stability and increase accuracy.

[Autor]

Příspěvky