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Determination of Aerodynamic Co-Efficients of Fin Stabilized Armour Piercing Penetrator using Yaw Cards

BORA MURALIDHAR, ROHITENDRA BHANDARI

Abstract


The main battle tank, form one of the most important, and at the same time most difficult, groups of targets to be defeated on the battlefield. The modern development of anti armour kinetic energy projectiles has been in the direction of long rod and fin stabilised penetrators. This configuration is very much sensitive for in bore balloting and perturbations during discarding of sabot. These disturbances mainly affect the lethality due to sinusoidal motion of penetrator in its flight. FSAPDS (Fin Stabilised Armour Piercing Discarding Sabot) ammunition is the Primary Ammunition for all kind of tanks. Design of ammunition with minimum yaw plays an important role in achieving desired lethality and goals. The experimental data was utilized with a mathematical model to determine aerodynamic coefficients of penetrator in flight.

Keywords


FSAPDS, sabot, penetrator, tail, discarding, pitching motion, moment

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