You were definitely were comparing those two lmao. Anyways this just gets worse for you, the “potential A3” would loose more of the round due to the explosion of the era than what it looses due to the tip existing, you would then also be left with a damaged round and blunted tip which would have worse performance. The steel can preform two jobs one it puts less impact pressure on the armor which prevents it from setting itself off, or two can sustain the blast pressure a bit better than the DU can which is what they were trying to explain to you.
so… its always angled at 70 degrees or are you just assuming the best case scenario
because no way a 40mm plate at 0 degrees can provide 120mm of RHA protection
Actually according to the patent I posted, the exact opposite happens. The round uses the outer flyer plate to rotate the round to be more normal. So if we assume the main penetrator has the same dimensions as M829a2 impacting at the same velocity, it would have better penetration when going through the ERA than M829A2 would be striking the plain armor
Just passing by, btw, a long tip increase the dead zone of ERA (so the front plate only interact with tip, not the main rod) and it result in pen probability. Like if u hit a 68-deg front-plate-only ERA with 1.4km/s rod, the plate fly 0.2km/s, 200mm tip, you will have about 143.3mm weak zone where it only bash the tip.
Let ERA be 500mm long, and your main rod will definitely pen it without tip, you will increase the pen prob by 28.6%