[Drecas]

[Drecas]

Caesar x K9 x Boxer RCH155

https://twitter.com/TotherChris/status/1579874849128054784?s=20&t=MWeaLUN-KAbw9gBZpJympA

[Drecas]

Bom........espetacular
Irá entrar ao serviço do exército português no ano 3000 haha

[HSMW]

The Weakness of Russian VDV Airborne Force Structure

How Ukraine's Tank Forces are Organized & Equipped

[Lusitano89]

[HSMW]

Com ERA (Kontakt 5)

Sem ERA

Simulation of a M1A2 Abrams projectile hitting the frontal armor of T-80U.

120mm M829A2 APFSDS (4.9kg projectile, 4.6kg DU penetrator, ~21mm dia) at 1630 m/s

 vs

T-80U hull front armor:

Kontakt-5 ERA (15mm HHA plate, 8 x 4S22 explosive elements)
+
50mm SHA + 35mm Glass Textolite + 50mm SHA + 35mm Glass Textolite + 50mm SHA at 68 degrees
 

120mm  muzzle velocity (M829A2) - 1680 m/s. 1630 m/s refers to a distance of approximately 1 km.

SHA - Semi Hardened Steel (+400 BHN RHA)

[Cabeça de Martelo]

[Lusitano89]

[Lusitano89]

A NATO sniper's mindset

[HSMW]

Simulation of a AMX-10 RC projectile hitting weakened area of the hull frontal armor of T-72B 85'


105mm OFL-105-F3 APFSDS (~2.1 kg tungsten alloy penetrator) at 1360 m/s

 vs

T-72B 85' lower hull front armor:

80mm/60mm RHA* plates connection.
+10mm HHA
+10mm HHA
+20mm HHA
+20mm HHA
+50mm RHA* (68 degrees)
 
105mm F2 gun muzzle velocity (OFL-105-F3) - 1400m/s. 1360 m/s refers to a distance of approximately 0.65 km.

RHA* - Semi Hardened Armor (+400 BHN)

[Drecas]

[HSMW]

The simulation presents the impact of the T-62's 3BM6 Armour-Piercing Fin-Stabilised Discarding-Sabot (APFSDS) projectile against the upper glacis of the M60A1 at ~2000m.

While over 100mm thick, and at a steep angle of 65°, the M60A1 featured cast armour with a low hardness of ~220BHN.

Even for plates of equal hardness, Cast Homogenous Armour (CHA) is inherently weaker than Rolled Homogenous Armour (RHA) due to porosity, impurities, and its grain structure.
At this impact velocity, 3BM6 is right on the perforation limit for a RHA plate of this angle, hardness and thickness, whereas it passes through the CHA with some reserve.

If the plate was made of medium-hardness RHA of 250-300BHN, penetration would have been resisted.

For the simulation the velocity was approximated, based on a slightly increased velocity drop from 3BM3 & 4 (as it is lighter), with L-O calculations agreeing with the performance over range detailed on Tankograd.

[Drecas]

[Lusitano89]

[Lusitano89]