Vol.7     No.5      October1999                                                                 ISSN:0971-4413
Bulletin of Defence Research & Development Organisation



The kinetic energy projectiles, viz., Armour Piercing Discarding Sabot (APDS) and Fin Stabilized APDS (FSAPDS) are aimed at effectively destroying well-protected tanks and infantry combat vehicles. The technologies associated with the FSAPDS ammunition have been fully developed by taking ab initio R&D activities in DRDO. The technology has been extended to enhance fire power of tank guns in calibres of 105 mm, 120 mm and 125 mm.

Fin stabilized Armour Piercing Discarding Sabot

FSAPDS is a sub-calibre projectile (penetrator) successfully designed to meet the ballistic requirement in the gun and at the target. The high length-to-diameter (L/D) ratio makes this penetrator capable of defeating all triple heavy targets at a range of 2500 m. Penetration of the target depends on the behaviour of the material of both the armour and the projectile and it is governed by the kinetic energy of the projectile.

The complete round consists of two cartridges, an FSAPDS shot with main primary charge and a secondary charge. The primary charge consists of a combustible cylinder with propellant charge, a steel cup which functions as the obturator and electromechanical primer screwed on to the steel cup base. The secondary charge consists of a shot which includes the tungsten alloy penetrator, three-segmented aluminium sabots, a tail fin, a tracer and a combustible cylinder with propellant charges.

FSAPDS components are sensitive and sophisticated in nature and demand utmost care during their manufacture and assembly. The dimensional and weight accuracies in various components are maintained to very close tolerance limits to achieve optimal performance of the ammunition.

The production of these ammunition has been established by Ordnance Factory Board saving annual foreign exchange of over Rs 200 crores per annum and has enhanced Army’s self-reliance and fighting capabilities.

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Armaments,Indian Small Arms System, MultiBarrel Rocket System- Pinaka ,Fin Stabilized Armour Piercing Discarding Sabot, Illuminating Ammunition ,Bund Blasting Device,30mm HE Grenade for AGL,Charge Line Mine Clearing Equipment ,Propellant Technology, 84mm Light Weight RL Weapon ,Warheads ,Lead Zirconate Titanate Based Piezoceramics ,Armament Research Board