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Armour-piercing fin-stabilized discarding sabot (APFSDS), long dart penetrator, or simply dart ammunition is a type of kinetic energy penetrator ammunition used to attack modern vehicle armour. As an armament for main battle tanks , it succeeds armour-piercing discarding sabot (APDS) ammunition, which is still used in small or medium caliber ...
The next generation ammunition, called 120 mm APFSDS-T M829A2, entered service in 1994 and is the armor-piercing ammunition currently being produced by General Dynamics Ordnance and Tactical Systems for the 120 mm M256 gun of M1A1 and M1A2 tanks. It is a technology improvement over the M829A1.
Armour piercing discarding sabot munitions were developed to increase penetrating performance of anti-tank projectiles by generating higher impact velocity.A larger projectile would require a completely new weapon system, but increasing velocity faced the limitation that steel armour-piercing (AP) projectiles shattered at velocities above about 850 m/s when uncapped.
A sabot (UK: / s æ ˈ b oʊ, ˈ s æ b oʊ /, US: / ˈ s eɪ b oʊ /) is a supportive device used in firearm/artillery ammunitions to fit/patch around a projectile, such as a bullet/slug or a flechette-like projectile (such as a kinetic energy penetrator), and keep it aligned in the center of the barrel when fired.
APFSDS – Armor-Piercing Fin-Stabilized Discarding Sabot; APFT – Army Physical Fitness Test (U.S. Army) APFU – Army Physical Fitness Uniform (U.S. Army) APO – Army Post Office; See Also FPO; APPN – Appropriation Number (U.S. Military) APRT – Army Physical Readiness Test (U.S. Army) ARCENT/TUSA – US Army Central/HQ Third US Army ...
Armour-piercing fin-stabilized discarding sabot (APFSDS) using a sabot and tracer (APFSDS-T). Typically used against other modern tanks. There are different ways to measure penetration value. NATO uses the 50% criteria against 260BHN Steel, while the Soviet/Russia standard is higher (80% had to go through). [citation needed]
The M256 based on the L/44 when firing M829A1 Armor Piercing, Fin Stabilized, Discarding Sabot - Tracer (APFSDS-T) ammunition can attain a Peak Chamber Pressure of 661.9 MPa (96,000 psi) at 49 °C (120 °F) and 569.85 MPa (82,650 psi) at 21 °C (70 °F).
Twenty-two 75 mm ready rounds (11 APFSDS and 11 HE respectively) could be carried in a magazine and thirty-three more could be carried in hull storage. [8] A 40 mm grenade launcher was originally included, but removed during a review of the proposal. [6] The AAI proposal called for sixty 75 mm rounds.