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