War Thunder

T-64A/B, T-72A, and T-80B glacis armor performance against long rod APFSDS

warthunder 6 - T-64A/B, T-72A, and T-80B glacis armor performance against long rod APFSDS
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With the recent changes to how monoblock APFSDS penetration mechanics work
perfcalc - T-64A/B, T-72A, and T-80B glacis armor performance against long rod APFSDS
(projectile penetration capabilities are dictated by Lanz-Odermatt calculations) I wanted to take a look at how projectile armor interaction was affected, particularly with the tier 6 Soviet tanks. Overall what I found was that the change in penetration mechanics resulted in a substantial indirect buff to the T-64B, T-72A, and T-80B Glacis protection capabilities.

First of all, Let's start out with some projectile penetration figures derived from the L-O calculator using the same input parameters
pubhtml?gid=2087102741&single=true - T-64A/B, T-72A, and T-80B glacis armor performance against long rod APFSDS
provided by Gaijin:

  • The 105mm DM23/M111 will penetrate 425.3mm of LOS Armor at 10 meters, at an impact angle of 69 degrees from vertical (listed armor construction angle of the specified tanks).

  • The 120 mm DM23 will penetrate 513.6mm of LOS Armor at 10 meters, at an impact angle of 69 degrees from vertical.

The following are the in game armor compositions and of the specified tanks and their corresponding protection capabilities against the threats referenced previously (I've added the 120mm DM13 for comparison). The LOS RHA equivalency of each tank was calculated using the armor angle of inclination and KE armor coefficients detailed in
pubhtml?gid=2087102741&single=true - T-64A/B, T-72A, and T-80B glacis armor performance against long rod APFSDS
this list:

So what does this all mean? For some reason it appears that the glacis armor on the T-64B/72A/80B act as a flat slab of armor equivalent to their respective sloped LOS RHAe thickness when impacted by monoblock APFSDS projectiles, taking advantage of their lower 0 degree penetration capabilities. However the armor also acts as sloped armor when impacted by sheathed APFSDS projectiles, taking advantage of their degraded angled performance. This results in the T-64B/72A/80B having optimum protection capabilities against both types of APFSDS projectiles, making them more resilient than they really should be, especially to monoblock projectiles.

TL:DR High tier Soviet Glacis armor is literally magic. Except for the T-64A… That poor poor T-64A.

Source: Original link


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