Direct Hit to ammo doesn't explode, can someone help me understand why?

Random number generator

How is that related to ammorack?

It’s random on if it’ll explode or not when hit.
Which is what random number generators do. Pick a random number between 1 and 100. If it’s below 50, it doesn’t explode to put it simply

Oh but some tanks allways explode on ammorack as far as im aware
Like the t80s
So its diffrent on every tank?

Probably, some tanks have ammo wetting which decreases the chance of an explosion. Others have ammo in spots which always explode. Just depends really.

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Ok thx didnt know that i thought its just a bug

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There is what Emma’s storage but that was not in that location for that tank. The rounds are actually in the yellow fuel tank and it would show that if it was in wet ammo storage

eh, probably every tank still has rng then. Even if it’s low that it’ll survive. That or russian bias but eh

Propellent part of the shell is one that ammo racks you. If you hit round itself probability of explosion is very low even on HE shells. Russian tanks have 2 part ammo on carousel loading system and thus higher probablity of hitting propellent part. But in the end its still random.

It’s tendency of T-62 (and other early Soviet MBT) fuel tank to protect the ammunition. It can also absorb the round altogether, which is apparent especially with low-penetration rounds. Since the ammunition is not tightly packed, often a direct hit is needed. They are stored in fuel (wet storage).

Also, consider that the diesel fuel tanks often explode to incapacitate the entire crew. So the RNG element is thus huge.

There is RNG but there is also a multipplier.
Some tanks have a multiplier as high as 50% (CR2) as an example.

T- series tanks used to always explode when hit in the carosel but that was bad for Russias image and Russian player base didnt like it so they reduced the chances and now it hardly ever reliably happens.

That’s completely false.

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Would you like to bet and compare…We have datamines from the last year that showed CR2 ammo detonation was higher than a T-80BVM.

Every shot in the side would ammo rack a T series tank now that isnt always the case. Especially with the inclusion of an autoloader spall absorbing module.

https://www.reddit.com/r/Warthunder/comments/11m4irx/yes_russian_tanks_have_lower_ammo_detonation/

What exactly did they say?

I seem to ammorack T-72s quite consistently.

The main reason why you don’t seem to is most likely confirmation bias, mixed with only hitting 1-2 ammo at one time. You will always notice it more on tanks where aiming for ammo is the best way to kill it, and you increase the chances of a failure when you only hit 1-2 pieces of ammo, rather than 5+.

Do you have any proof that isn’t from 2 years ago?

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He doesnt. The “proof” he is referring to is a number datamined that people assume is the pure ammorack chance, but realistically could be effected by any other multiplier that cannot be datamined. And iirc the number was 0.5 for both the Challenger 2 and the T-series, not higher. This post puts it to bed really. https://www.reddit.com/r/Warthunder/comments/14hmwcn/a_final_conclusive_and_concise_explanation_of_top/

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You are quite cleary missing the ammunition numerous times in that video (if that is your video).

Saying that ammo rarely explodes when being hit in the carousel is a big overexaggeration.
Just because you saw in the x-ray that the autoloader module has been hit, it doesn’t mean you actually hit any ammo.

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you see, comrade. When tank ammo has no explosive in because we sold it for potato, ammo can not explode when western spy tank shoots it.
image

TL;DR the higher the post pen damage the greater the potential for igniting ammo. For example a shell with 150mm of pen (at impact) vs ammo behind a 90mm has a higher chance of detonation when compared to 105mm of penetration vs ammo behind that same 90mm plate (assuming lab conditions and no angling)

I don’t have any evidence on hand, and I may be misquoting a youtuber.

I’m fairly certain that a major factor is the amount of energy left in the shell post penetration is a factor. I’ve blacked out ammo with a direct armour hit and it not explode. My understanding and personal rule of thumb is that you need to “Overkill” the ammo, if shooting solid shot, apcr, apds, apfsds etc. You need to have enough excess penetration to ensure the penetrating parts will not only destroy the ammo but also ignite it.

I believe HEAT shells function along a similar logic, Ie. if you shoot a 90mm heat shell and it penetrates the equivalent thickness of 300-350mm of armour the post pen effect is going to be next to zero.

When using APHE shells and over pressure I’m never actually sure what delivers the killing blow, if its initial spall from the penetration, shrapnel from the shell charge exploding or the explosive effect itself.

I have more or less given up on HESH as a viable ammo type and have nothing to contribute.

I don’t think it’s as simple as RNG, or rather there’s a probability of a piece of ammo exploding on hit.

Translation to english: The carousel ammo cannot explode if you do not hit it.