The Russian T34 introduced sloped armor to tanks during World War II.


Advantages of sloped armor:

(1) greater effective armor thickness for a shot coming in horizontally

(2) greater chance of ricochet


If a sheet of metal has a thickness of T cm, then the effective armor is the hypotenuse for the triangle with a slope angle of A degrees.


effective thickness in cm =

= (thickness T in cm) / (sin A)



• Excel requires that an angle in degrees be converted to radians by multiplying it by PI()/180.


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