Calculating armour values.

[RecruitMonty]

I need to know how you calculate Armour values again. It has been a long time since I have had to do it and I lost the formula. Where I got it from I am not 100% sure. I think I got from this forum however my searches through it didn't come up with anything.

[Marcello]

thickness in cm/cosine of the angle of slope from the vertical

example using T-34 glacis

4.5cm/0.5 = 9cm

[RecruitMonty]

Thanks very much.

OK then, does anyone know the curve on an IS VIIs armour?

[MarkSheppard]

IS-7 Specs

Weight around 68 tons

130mm S-70 Main Gun (stored 30 shells)

4x 14.5mm MG

Semi-autoloader(6-8 rounds per minute) (It was not a real autoloader, more like power-assisted loading as used on various SPHs. Hence it still needed loader to place ammo on a tray.)

~1,000 horsepower diesel engine


Armor (got the data from www.tank-net.org a long time ago, and then converted it into SP format)

420mm Effective Hull Front
150mm Effective Hull Sides
150mm Effective Hull Rear
300mm Effective Turret Front
200mm Effective Turret Sides
200mm Effective Turret Rear

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EDIT: found some info in my Steel Panthers Editing FoldeR:


HULL
Front: 210mm @ 60
Side: 100 to 150mm @ 0
Rear: 60 to 100mm @ 55
Floor: 20mm
Top: 30mm?

TURRET
Front: 210mm @ 45
Side: ~150mm @ 40
Rear: ~100mm @ 15 to 65
Top: 30mm?

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EDIT: here is the open office formula I use to calculate armor values:

=(B3/(COS(C3*0.017453293)))/10

C3=Slope of Armor
B3=Thickness of Armor in MM

It then outputs armor equivalent thickness in CM, which is what SPCAMO uses.

[RecruitMonty]

Thanks, even better.

[RecruitMonty]

Ok, I am back again. I can't help but feel I screwed up on some recent calculations so let me type up the formula I have been using and hopefully one of you guys will be able to tell me where I went wrong. X / Cos Y / 10.

X being the thickness of the armour in mm.
Y being the angle of the slope on the armour.

Also, What do you do when the armour is rounded?

Also, which set of armour values above is correct?