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RNG and Penetration for IDIOTS guide


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cragarion #1 Posted 08 December 2017 - 12:33 PM

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You have 40mm pen you are facing 23mm armor but you bounce WHY,

 

OK what is RNG ?,

Random Number Generation or Random Number Generator.

 

What does RNG do ?,

generates a number randomly between certain parameters,

imagine 2 dice 1 6 sided dice and 1 25 sided dice,

the roll of the 6 sided dice decides whether it's a + or - percentage, say odd number - and even number +,

the roll of the 25 sided dice decides the size of the percentage.

 

How does this work ?,

say your penetration is 40mm,

you roll the 2 dice,

the 6 sided dice gives you a 5 that's a - %,

the 25 sided dice gives you a 10 so that's 10%

so the 2 dice have given you -10% to your 40mm penetration,

so your penetration is now only 36mm,

 

HOWEVER RNG is not the only decider in penetration, 

you also have to take into account the angle of the armor and any spaced armor the target has,

 

Angled armor penetration 

 

Armour is increased by angling it you can see how this works in the below image,

(Effective armor = the thickness of armor the shell actually has to pass through the red line,)

Image A shows 30mm of armor that is flat giving you 30mm of effective armor, 

image B shows 23mm of armor angled at 45 degrees, this gives you 32.5mm of effective armor,

 

So as you can see if it says a tank has 23mm of armor, if that tank or armor is angled at 45% that armor then becomes 32.5mm of armor,

add to that the -10% pen you got from RNG and your 40mm pen against 23mm armor, has now become 36 pen against 32.5 armor

 

Spaced armor penetration

 

Spaced armor adds extra thickness to armor, lets use tracks as an example as they are classed as spaced armor,

below tier 5 tracks add between 5 - 15mm of armor,

above tier 5 tracks for lights, mediums and small heavies can add between  20 - 30mm armor,

heavier tank tracks can add up to 40mm of armor,

 

Ok say take your 40mm pen and 23mm armor

 

a tank has 23mm of armor, if that tank or armor is angled at 45% that armor then becomes 32.5mm of armor,

add to that the -10% pen you got from RNG and your 40mm pen against 23mm armor, has now become 36 pen against 32.5 armor

add to that between 5 - 15mm spaced armor and it's now 36mm pen against 37.5 - 47.5 armor

 

So just because you have 40mm pen and you know the tank has 23mm armor by the time RNG, Angled armor and Spaced armor are taken into consideration you could be looking at 36mm pen against 47.5mm armor.

That's how you can bounce 40mm pen against 23mm armor.

 

 

 

Now before you all jump down my throat and say i missed out types of shells, normalisation, compound angles and other stuff i've tried to make this guide as simple as possible showing only the very basics.

 

 

 

 



MetaCube63 #2 Posted 08 December 2017 - 12:40 PM

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Wow, you actually managed to post something usefull, gg.

tangerine_sedge #3 Posted 08 December 2017 - 12:54 PM

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Upvote from me.  Its this kind of basic information that needs its own sticky.  A similar post on spotting mechanics would be useful too.

 

Have an inyernet beer on me :)



CmdRatScabies #4 Posted 08 December 2017 - 01:03 PM

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View PostMetaCube63, on 08 December 2017 - 12:40 PM, said:

Wow, you actually managed to post something usefull, gg.

 

Wonder where he copied it from.  :D

HeidenSieker #5 Posted 08 December 2017 - 02:26 PM

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Would it be better with a two-sided die rather than a six-sided one?

cragarion #6 Posted 08 December 2017 - 08:26 PM

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View Posttangerine_sedge, on 08 December 2017 - 12:54 PM, said:

.............................  A similar post on spotting mechanics would be useful too.

.................................

 

May sort one out next time i get bored :).



Bigtime_Alarm #7 Posted 08 December 2017 - 08:42 PM

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you missed the other rule, enemy pens you every shot, you never pen them except at 20cm range in the back with gold ammo dead flat and neither of you moving

cragarion #8 Posted 08 December 2017 - 08:53 PM

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View PostBigtime_Alarm, on 08 December 2017 - 08:42 PM, said:

you missed the other rule, enemy pens you every shot, you never pen them except at 20cm range in the back with gold ammo dead flat and neither of you moving

 

Don't be silly that's when you always miss, you only hit when your barrels actually inside the tank. :)

Schemezoid #9 Posted 09 December 2017 - 08:28 AM

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The best is when i shoot HESH vs a scorpion when playing my cent 7/1 and do 200dam!

zen_monk_ #10 Posted 09 December 2017 - 10:02 AM

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View PostMetaCube63, on 08 December 2017 - 11:40 AM, said:

Wow, you actually managed to post something usefull, gg.

 

Don't be so rude, I always enjoy to see his avatar.

cragarion #11 Posted 09 December 2017 - 11:33 PM

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View Postzen_monk_, on 09 December 2017 - 10:02 AM, said:

 

Don't be so rude, I always enjoy to see his avatar.

 

Almost lost my avatar but an appeal got it back :) 

RamRaid90 #12 Posted 09 December 2017 - 11:36 PM

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Wow, a semi-useful copy paste topic.

 

Next time why not just copy the wiki directly?

 

OP obviously just trying to bump post count.



cragarion #13 Posted 09 December 2017 - 11:40 PM

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View PostRamRaid90, on 09 December 2017 - 11:36 PM, said:

Wow, a semi-useful copy paste topic.

 

Next time why not just copy the wiki directly?

 

OP obviously just trying to bump post count.

 

Reported trolling to try and start an argument.

Nishi_Kinuyo #14 Posted 09 December 2017 - 11:47 PM

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Maybe you could've added a bit on how non-penetrating HE shells work.

Lots of people seem to have trouble understanding how that works as well.

Like a certain (H)E-100 player I had on my team today.



cragarion #15 Posted 09 December 2017 - 11:51 PM

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View PostNishi_Kinuyo, on 09 December 2017 - 11:47 PM, said:

Maybe you could've added a bit on how non-penetrating HE shells work.

Lots of people seem to have trouble understanding how that works as well.

Like a certain (H)E-100 player I had on my team today.

 

I missed out several things because i'm trying to keep it as simple as possible.

TsundereWaffle #16 Posted 10 December 2017 - 12:25 AM

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So, who did you ask to write a post that isn’t horrible for you?

890 #17 Posted 10 December 2017 - 09:16 AM

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Jack_Sparroxx #18 Posted 10 December 2017 - 09:18 AM

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View Postcragarion, on 08 December 2017 - 11:33 AM, said:

You have 40mm pen you are facing 23mm armor but you bounce WHY,

 

OK what is RNG ?,

Russian Number Generation  

 

Fixed it for you, no thanks required... 


Edited by Jack_Sparroxx, 10 December 2017 - 09:18 AM.


anonym_kL7qtn3e52MB #19 Posted 10 December 2017 - 10:07 AM

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View Postcragarion, on 08 December 2017 - 12:33 PM, said:

You have 40mm pen you are facing 23mm armor but you bounce WHY,

 

OK what is RNG ?,

Random Number Generation or Random Number Generator.

 

What does RNG do ?,

generates a number randomly between certain parameters,

imagine 2 dice 1 6 sided dice and 1 25 sided dice,

the roll of the 6 sided dice decides whether it's a + or - percentage, say odd number - and even number +,

the roll of the 25 sided dice decides the size of the percentage.

 

How does this work ?,

say your penetration is 40mm,

you roll the 2 dice,

the 6 sided dice gives you a 5 that's a - %,

the 25 sided dice gives you a 10 so that's 10%

so the 2 dice have given you -10% to your 40mm penetration,

so your penetration is now only 36mm,

 

HOWEVER RNG is not the only decider in penetration, 

you also have to take into account the angle of the armor and any spaced armor the target has,

 

Angled armor penetration 

 

Armour is increased by angling it you can see how this works in the below image,

(Effective armor = the thickness of armor the shell actually has to pass through the red line,)

Image A shows 30mm of armor that is flat giving you 30mm of effective armor, 

image B shows 23mm of armor angled at 45 degrees, this gives you 32.5mm of effective armor,

 

So as you can see if it says a tank has 23mm of armor, if that tank or armor is angled at 45% that armor then becomes 32.5mm of armor,

add to that the -10% pen you got from RNG and your 40mm pen against 23mm armor, has now become 36 pen against 32.5 armor

 

Spaced armor penetration

 

Spaced armor adds extra thickness to armor, lets use tracks as an example as they are classed as spaced armor,

below tier 5 tracks add between 5 - 15mm of armor,

above tier 5 tracks for lights, mediums and small heavies can add between  20 - 30mm armor,

heavier tank tracks can add up to 40mm of armor,

 

Ok say take your 40mm pen and 23mm armor

 

a tank has 23mm of armor, if that tank or armor is angled at 45% that armor then becomes 32.5mm of armor,

add to that the -10% pen you got from RNG and your 40mm pen against 23mm armor, has now become 36 pen against 32.5 armor

add to that between 5 - 15mm spaced armor and it's now 36mm pen against 37.5 - 47.5 armor

 

So just because you have 40mm pen and you know the tank has 23mm armor by the time RNG, Angled armor and Spaced armor are taken into consideration you could be looking at 36mm pen against 47.5mm armor.

That's how you can bounce 40mm pen against 23mm armor.

 

 

 

Now before you all jump down my throat and say i missed out types of shells, normalisation, compound angles and other stuff i've tried to make this guide as simple as possible showing only the very basics.

 

 

 

 

 

FWIW Uniform Dice (dice where all faces have equal probability of outcome)... they come in 4, 6, 8, 10, 12, 20, 30, 100, and 400 sides.

No such thing as a 25 sided die.

Key is the word "UNIFORM" (equal probability).

Someone forgot to memo WG though.  They only flip coins...  :coin:

 

 

 

 

 

People made attepmpts to make a 2 sided die:

 1 sided:

 

But no such thing as a 25 sided die... I'm very sorry...

 

Spoiler

 


Edited by Spek_en_Bonen, 10 December 2017 - 10:14 AM.


cragarion #20 Posted 10 December 2017 - 10:46 AM

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View PostSpek_en_Bonen, on 10 December 2017 - 10:07 AM, said:

 

FWIW Uniform Dice (dice where all faces have equal probability of outcome)... they come in 4, 6, 8, 10, 12, 20, 30, 100, and 400 sides.

No such thing as a 25 sided die.

Key is the word "UNIFORM" (equal probability).

Someone forgot to memo WG though.  They only flip coins...  :coin:

 

 

 

 

 

People made attepmpts to make a 2 sided die:

 1 sided:

 

But no such thing as a 25 sided die... I'm very sorry...

 

Spoiler

 

 

I know that but the RNG is + or - 25 and the simplest way to explain RNG is the roll of a dice.




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