Re: Math formulas
Actually, you got the formula wrong.
It's really
Anderson:
P = 1.044 x V - 0.194 x Ln(L/D) - 0.212 * L
V: velocity (Km/sec)
L: length of the penetrating rod (mm)
D: diameter (mm)
P: Penetration
HOW TO DO IT:
Now to provide the numbers:
V = 0.81 (810 m/s) = Velocity
L = 370.05 = Length of Penetrator (mm)
D = 88 = Diameter of Penetrator (mm)
Roughly that of a German 88mm L56 shell.
So we've got the following equation now:
1.044 x 0.81 - 0.194 x Ln(370.05/88) - 0.212
First thing first, we need to solve the Logarithimic problem; excel is great for those of us who did not pay attention in Math; it has a Logarithm function.
370/88 in Logarithimic is: 1.4363
So now the Formula is:
1.044 x 0.81 - 0.194 x 1.4363 - 0.212 * 370.05
Something that you can solve with basic infantryman math.
That formula results in
131.36mm penetration.
That's actually quite close to the actual performance of the 88mm L56 Panzergranate 39 round; which was 120mm of armor at 30 degrees (139mm total) at 100m.
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