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Paul Vebber -> (7/12/2001 1:10:00 AM)
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I've adjusted some of the formulas and they are not easily typed in given the limits of the forum.
THere are two ways to figure "compound angle" he vertical angle is the same in both, in the "LOS" method you take 1/(cos(V)*cos(h)) That gives teh LOS distance through the armor. Now if you rotate teh plate not about the vertical axis, but the axis through the plate, you get the funky SQRT(1/cos^2(v)+1/cos^2(h)-1) formula.
For teh methodolgy I use (changing those ^2 to other powers as a function of T/D (thickness to diameter ratio) I get better agreement with published "slope modifiers" than with the "true LOS" value.
The path a shell actually takes through the armor is not a straight line path, but a curved, sometimes S shaped path so the "full LOS" thickness using the proceedure I came up with tends to overestimate "effective thickness" so I stayed with the "funky" one.
For Combat Leader A totally new proceedure will be used, derived from the data in Lorrin Bird and Robert livingston's book on WW2 Ballistics. Sincle CL will deal with Modern too there will be some differences from the methodolgy there in some cases.
IF you want to understand the complexities of the whole penetration process, there is no better reference!!
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