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Shell 105 mm FD High-Explosive Squash Head
Регіон
India
Категорія
Ammunition, Missiles and precision weapons
The Shell 105 mm FD High-Explosive Squash Head is the body of the 105 mm L43A3 HESH has very thin walls and a short rounded ogive, which provides the projectile with a squat appearance that cannot be confused with the L31 HE series and other similar projectiles. The shell nose is closed by an aluminium alloy plug and there is a single driving band pressed into a ribbed groove machined into the end of the body. The rear of the body is internally screw threaded to accommodate an anodised aluminium alloy fuze
subassembly which comprises the shell base, into which is fitted the L58A1 base percussion fuze. Four cavities in the base each accommodate an L9A1 tracer together with its retaining plug; the tracers are ignited by the propelling charge. The base is strengthened by an aluminium plate screwed into the outside of it. The ogive of the shell is filled with inert bitumen (composition RD 1061), separated from the main filling of 2.098 kg of RDX/WX8 and sealed at the rear by a waxed felt disc. On impact the nose of the 105 mm L43A3 HESH projectile collapses so that the filling is spread as a 'plaster' across the target. Once the spreading action is complete, the base fuze detonates to transfer the detonation wave directly onto and through the target armour. The maximum charge used with this projectile is Charge 4 ½. This is formed by removing the Charge 3 increment from the Full Charge 5. The 105 mm Shell, Practice Squash Head (Prac SH) L41A1 is filled with 2.626 kg of an inert high-explosive substitute inside the body of the obsolete L41A1 service shell. The Shell, Practice Squash Head (Prac SH) L41A2 uses the shell body of the L41A2 (obsolete) or L41A3 service shell. These training projectiles have no base fuze but retain the four tracers. Neither of these training rounds remain in production in the UK. The 105 mm L43 series HESH was originally developed for the FV433 Abbot 105 mm self-propelled gun which has been withdrawn from service with the British Army. However, a number of Value Engineered Abbots (68) was supplied to India where ammunition similar to the L43 series HESH is still produced. The 105 mm L43A3 HESH is not used with the RO Defence 105 mm L118 Light Gun and is no longer in production in the UK.