In all higher muzzle velocity imparted more kinetic energy and therefore greater penetration, enabling the destruction of thicker armoured vehicles at greater distances. Once the projectile leaves the barrel, the outer sheath (Sabot) is discarded leaving the smaller projectile with less drag to travel to its target. Due to the large surface area for the gases to impinge upon the lighter projectile a far higher average acceleration within the gun barrel was achieved, in turn imparting a higher muzzle velocity. HESH rounds stand a greater chance of destroying conventional armour at longer distances than AP and other rounds that rely on kinetic energy to punch their way through, they are, however ineffective against tanks fitted with spaced armour.ġ05mm APDS Armoured-Piercing Discarding SabotĪ full bore sized round was found to be too heavy to accelerate to sufficient velocity so to get around this problem a smaller projectile was encased in a lightweight full diameter, discardable carrier shell called a Sabot, the projectile was about half the weight and diameter and the Sabot made up the difference needed to fit the bore exactly. This effect is called spalling and the resultant shrapnel moves through the vehicle at high speed killing or injuring the crew and destroying equipment. On impact with armour the plastic tip squashes onto to the armour forming a disc and preventing the warhead from skidding off and, owing to its relatively large and direct contact area with the armour, when detonation occurs, milliseconds later, a shock wave travels through the armour causing fragments to break off with high energy on the inside with a devastating effect. HESH rounds are a high explosive round encased in a thin outer shell with a soft plastic tip and a delayed- action fuse in the base. Their armour-piercing capabilities are somewhat limited and they are used mainly against soft targets, lightly armoured vehicles and buildings. High-Explosive rounds (HE) as distinct from High-Explosive Armour Piercing rounds rely more on blast and are usually detonated on impact or with a timed or chemical fuse. They are generally used against tank armour, concrete or other defences, depending on the calibre of the round being used.Īrmour piecing rounds contain no explosive instead they rely solely on the massive amount of kinetic energy delivered by the explosive propellant and gun barrel design, to penetrate the armour. Generally the round is made from special, high chromium steel which is forged into shape, rather than cast, and then annealed this imparts extremely high tensile strength into the round. The Armour-piecing round must be able to withstand the shock wave of punching through armoured plate without disintegrating, to enable the shell to archive this, a greatly strengthened case with a specially hardened and shaped nose had to be developed. At the end of the First World War the army started using armour-piecing rounds for Anti-tank operations. LAW 66, M72, L1A1 Light Anti-Tank WeaponĪrmour-piecing rounds were developed in the 1860s to defeat armoured plate and were originally used by the Navy.Halloween Sci-fi special 28th & 29th October. ![]() Annual Easter Egg Hunt is back! Saturday 8th April 2023.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |