One of those bug reports covering ERA has a complete page, where it states “ХСЧКВ 25” (saw it myself).
Wouldn’t be so sure about it. I have never seen any proof of model 25 being a prototype of 34, so I take that statement with a heavy grain of salt. There might be some other page stating that, but AFAIK there is none.
Model 25 is overall a mysterious one. Of all sources ever pulled out concearning ERA, or Oplot in general, UAE trials doc is the only mention of it.
I guess we would have to wait and see if this report ever becomes available publicly.
Even still, the penetration reduction should be at least 78% of BM42. I know ralin said in the other thread that the penetration reduction in the test footage matches 60% of BM42 but idk how he did his calculations. Clearly the turret ERA stopped 78% of penetration if the round left a 60mm impact on the normal according to the footage info.
Obviously a dampener between ERAs was used. We don’t know for sure which dampener was used in trials, but because we have that “60%” number for Duplet, and “50%” for Nizh that is supported with 15mm steel plate, devs simply pilled up numbers together via calculations and the only problematic thing – dampener – was a product of guesstimation because patent does state materials bit doesn’t state thickness, as well as developer of ERA doesn’t state composition of ERA complex except of ERA tiles themselves.
Even disregarding the dampener/50mm plate as shown in blueprint, tests show 78% reduction of BM42 penetration. Ralin was claiming that tests align with in game values, but they clearly do not. KE protection should be around 430mm including front cover and dampener on the turret armour.
Well, that’s for the turret section. You can’t know for sure how many tiles actually affected projectile: 1, 2 or 3. After all, ERA block on the turret has up to 6 of them tiles, and even then, it would hit at least a couple of those.
In-game, if APFSDS hits 2 of such tiles, it also looses quite a lot of pen. Probably not as much as it actually should, but again, hull armor layout ≠ turret armor layout
From where the shell came and where it hit, 2 tiles were hit by the shell, look at the image where residual penetration is shown, it’s at the bottom of the ERA mount, it could not have hit 3 tiles on its way. To hit 3 tiles, the shell has to be fired from a very high angle above the target tank.
From line of sight, the entire front arc of the BM Oplot tank is designed to have 2 tiles hit the shell before it makes contact with base armour, the probability of hitting more than two tiles is very less.
78% reduction is for two tiles plus covers and dampeners in the turret ERA mount. This again matches with the brochure values stating 80-90% reduction in penetration including these elements.
For the hull, the reduction should be at least 78% because it has the same ERA at the same angle. As stated before regardless of whether you consider the 50mm RHA plate as a dampener or not, the armour is underperforming.
However, isn’t it weird that an entire section disappeared, not just 2 tiles?
If even one tile is struck, at least the one next to it will fuse, and so will the ones below and above them (from the photo, the lower twin row was struck), and the one below the lower line was also fused, thus influencing the thing as well.
Ofc the upper ones did 0 influence to it, but the fact is the same: not just 2 tiles fused, but an entire section
I mean sure yeah the entire section broke off and probably fused. But that doesn’t really mean anything in regards to how much degradation of penetration should be observed.
I think it is, the tested module used in hull contains the 50mm steel armor between the two layer of Nozh ERA.
Nozh has different type used in different position
best of luck, at this point I might start to advocate for it to just be moved to 11.7. The ufp just makes it unfun to play against tt rounds. That 50mm rha plate would be so clutch.
I was asking around earlier about any other possibilities to get the ufp over 700mm of armor but that seemed like the most probable, other than fixing the era.
Well as expected it was closed. Again they didn’t even read it cause they thought the source I provided to prove that UAM’s Duplet is different than regular Duplet is actually the source I want to use for Duplet’s values. What amateurs.