Challenger 2 MBT - Technical data and Discussion (Part 1)

I can see it now, ‘this youtube video of some random british person sticking a magnet to a bulldog is clearly edited, look they have a blurred face showing it is!’

Anybody want to squad up for some Chally games?

If they fix the challengers I’ll buy every premium on the storepage.

Hopefully someone from the sales department is watching this thread haha

If they fix it, I’ll 100% buy the OES (for 50% off)

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Legwolf is about to put another essay…

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Posting this here so it’s in the right thread:
ASPRO-HMT should provide 240MM of KE resistance at 67 degrees and 120MM of KE resistance at 0 degrees and here’s why:

A) We know from looking at the testing ranges, wording and methodology documentation for STANAG 4569 that panels are tested individually. So a single ASPRO-HMT block can stop 25mm at 67 degrees.
B) To stop 25mm at 67 degrees, a single block must provide 48mm of KE to stop it before it exits out the other side
C) We know from “Images of War”, ASPRO-HMT’s insides are reactive (explosive) tiles and Passive (Chobham type) composite tiles layed out in series.
D) Because at 67 degrees, the round is not encountering 100% of the width of ASPRO-HMT, but rather just about 20% and still managed to stop 25MM, we can use these values to determine the KE resistances for - Multiple blocks in a row where the round encounters 100% of the passive tiles over 3 blocks at 67 degrees, and the KE resistance of 1 block at 0 degrees.

image
Above, is a top down diagram for singular ASPRO-HMT blocks.
Below, is a top down diagram of blocks layed out, in the same way as they are on TES.
image

In short, if 20% of the width of a single block is 48mm KE, 100% is equal to 240mm, if at 67 degrees, the round continues encountering ASPRO-HMT blocks at that angle.
At 67 degrees however, the passive tiles provide more KE because they are angled. To correct for this and find 0 degrees KE, we can divide by two, assuming that angling provides roughly twice the amount of KE as flat penetration, giving us 120mm of KE at 0 degrees.

@Gunjob Feel free to take a squiz, as I think this is pretty clean maths and makes sense given the sources claims. I’ve included all this info in my bug report here: Community Bug Reporting System

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In any case, 30 KE is simply too low

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Sorry Disregarded, Cannot be better than Kontakt or Relikt.

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image
Then we’re in luck! Relict gives 10mm more :P (well…about 130mm more, given this is flat pen and ours is 120mm)

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lol :p

and it is only era and no where near as thick

The big thing here, is Relict is very compact and uses explosives to shatter incoming rounds.
ASPRO-HMT is more like spaced composite armor, but replaces the airgaps with explosive tiles that can only be set off from HEAT rounds. There’s no dart shattering going on in ASPRO-HMT, instead, it’s a full hybrid passive armor suite when hit by KE rounds.
It makes sense that something almost 4-5 times thicker than Relict is comparable.

Where Relict explodes and is a “one and done” ERA
ASPRO-HMT is a hybrid armor suite capable of taking multiple shots without detonating.
The drawback of ASPRO-HMT being, it’s FAR thicker and FAR heavier, but achieves multi-shot capability.
The drawback of Relict is it’s a one and done solution, but far more slimmer and light weight.

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It’s also because of this layering of Reactive and Passive tiles, that ASPRO-HMT can survive tandem warhead impacts.
The frontal breaching charge of a tandem warhead is relatively weak, so it won’t pen through the entire block. The follow up warhead is far more powerful, but encounters the unexploded remaining tiles the breaching warhead failed to contact.

The entire tandem attack is defeated owing to Rafaels ERA tiles ONLY exploding when the shaped charge projectile hits the tiles. If it doesn’t touch a tile, it wont detonate.

So you’d end up with the breaching charge blowing through 30-40% of the tiles it impacts before stopping, leaving the other 60-70% of unexploded tiles to catch the warhead.

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I cant wait for them to completely ignore all that info and say ur wrong ;D

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I don’t want to alarm anybody but my NERA just did something!

Like I said before, this is about as much effort as i’m willing to go, without some insentive from Gaijin lol
I’m doing all this research and investigative work for free, and have worked with their teams to alter and conform to their definitions - only deviating when evidence presented suggests otherwise.

If they come back and state “It’s still just 30mm” and show me a screenshot of the Protection Analysis screen, that’s me done helping them lol
I can provide analysis based on facts supported by sources, to draw very straight line conclusions, but if they are unwilling to conform to my research, it’ll be out of not wanting to, rather than having sources that say otherwise.

I welcome contradiction, but it needs to be supported with facts or sources. If they just go “yeah but we think the back plate is included”, then I can’t, nor do I want to, help them further.

I’ve given them the reasoning, sources, mathematics, and evidence to suggest ASPRO-HMT is 240mm KE at 67 degrees, and provides ~1200mm of CE. If they now say no - That’s on them and the community to hash out. My work here, is done :P

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Yeah some like the document doesn’t exactly state what RPG warhead so we assume it meant the oldest one

I’ll absolutely work with Gunjob if he’s got any questions, concerns or comments on my research he wants me to address. By no means am I saying I won’t defend my research here, but I am saying if they close the current reports and just send me the protection analysis screen and a message from the devs saying “No thank you”, I won’t be making any follow up reports and you’ll all have to live with the fact Gaijin believe the west is incapable of producing applique armor lol

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They can’t really make that claim anymore lol
I have sources suggesting the entire RPG-7 weapon system is defeated. ASPRO-HMT came onto TES in 2008. By 1988, Single stage RPG warheads were no longer the main anti-tank armament on RPG-7, replaced by PG-7VR.

I also have sources stating it was designed for tandem resistance and “Advanced shaped charge” attacks.

If they ignore my CE report, that’s from a place of genuine disinterest in making it functional lol

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Glad to see you are on a break legwolf

Gripen bug report, it was in a Cr2 game so it belongs here lol
https://community.gaijin.net/issues/p/warthunder/i/2Ml1MqREPR42

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