I’ve noticed that we have two rounds with virtually identical characteristics, except for penetration. One of them, the 3BM42-2, has 90 mm more penetration than the standard 3BM42. What’s even more surprising is that the round didn’t gain any weight. It simply gained 90 mm of penetration. How exactly was that achieved?
longer penetrator, faster
google exists
With bias.
Just 30 mm. That’s not much. It shouldn’t even increase penetration.
And something what was not even mentioned on changelogs, least I didnt saw it.
And another thing, with that you get that flat 6s reload on BVM , instead 6.4 on 3bm60 :D
50m/s more speed
remember the Formula for Kinetic energy
E = m/2 * v^2
5.635.500J for 3BM42
5.971.875J for 3BM42-2
this is where the extra penetration comes from, if its enough for 90mm? I dont know
I don’t think you can quite calculate this with just kinetic energy, the increase is huge for a relatively small increase in power
Velocity has an Exponential impact on Energy
that means if it gets higher, smaller diffrences start to make a Larger Impact
the total formula they use is much longer yes and I dont claim that this Formula alone can actually explain how much more pen it gets but it’s enough to explain why it gets more penetration
It also uses different penetrator vs mango.
But funny enough what I’ve found it is rated same 1700m/s as basic mango,
And some say it is heavier vs basic mango.
Hold up, did you just calculate them with the same weight? It shows right there that 3BM42 is much heavier than 42-2.
The difference in velocity isn’t big enough to actually result in more energy.
According to all the documentation, they have the same speed. What are you talking about? Besides, where would a higher speed come from?
in the game 42-2 is faster, who knows why but it is
could be many things
What kind? Magic?
Maybe try a source that doesn’t reference Steelbeasts and this forum as sources
Documentation = Steelbeasts.
War Thander forum is bad source. :D
The velocity of the 3BM60 is significantly lower than that of the 3BM42-2. However, at the same time, the 3BM60 penetrates 40 mm more.
The velocity is lower by 90 m/s, but penetration is higher by 140 mm. What kind of magic is this?
could be higher chamber pressure, idk
velocity is important but not the only factor, length of penetrator is also important among a few other things
Why is everyone talking about kinetic energy here? Had the Lanz-Odermatt formula been erased from the collective memory?
From “Penetration Limits of Conventional Large Caliber Anti Tank Guns / Kinetic Energy Projectiles” W. Lanz, W. Odermatt, 1992. Penetration depth isn’t just dependent on impact velocity, it also depends on rod length-to-diameter ratio and penetrator density relative to target density.
3BM60 Is much much longer vs mango or Mango 2.
Simple.
And also google is free, and you can see penetrator difference in materials etc.
