Palliser, who, with the Palliser shot, invented a method of hardening the head of the pointed cast-iron shot. The first solution to this problem was effected by Major Sir W. This armour was practically immune to both the round cast-iron cannonballs then in use and to the recently developed explosive shell. The late 1850s saw the development of the ironclad warship, which carried wrought iron armour of considerable thickness. History Steel plates penetrated in tests by naval artillery, 1867 Modern penetrators are long rods of dense material like tungsten or depleted uranium (DU) that further improve the terminal ballistics. AP rounds smaller than 20 mm are intended for lightly armoured targets such as body armour, bulletproof glass, and lightly armoured vehicles.Īs tank armour improved during World War II, anti-vehicle rounds began to use a smaller but dense penetrating body within a larger shell, firing at very high muzzle velocity. From the 1920s onwards, armour-piercing weapons were required for anti-tank warfare. The first major application of armour-piercing projectiles was to defeat the thick armour carried on many warships and cause damage to their lightly armoured interiors. – Bourrelet (front) and driving band (rear)Īrmour-piercing ammunition ( AP) is a type of projectile designed to penetrate armour protection, most often including naval armour, body armour, vehicle armour. – Base- fuse (set with delay to explode inside the target) – Desensitized high explosive bursting charge Lower right: Diagram of capped armour-piercing shell:.Lower left: Perforated 110 mm (4.3 in) armour plate, penetrated by 105 mm (4.1 in) armour-piercing solid shot projectile.Top right: Projectile penetration animation.Top left: Solid shot armour-piercing projectiles stuck in armour plate.
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