Quote:
Originally Posted by ArmySGT.
So, with a velocity.... we need a diameter for the e-factor formula.
Modern grenade? 1mm? or 0.5 mm? for a fragment.......?
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Ok, density of steel = 8.05 g/cm^3
Mass of an M67 fragment = 0.1 g
Volume of an M67 fragment = 0.1/8.05 = .01242 cm^3
Volume of a cylinder is given by:
V= pi * r^2 * h
Assuming height equals diameter gives:
V = pi * r^2 * 2 * r
V = 2 * pi * r^3
Solving for r gives:
r = (V/(2*pi))^(1/3)
Doing the substitutions and doubling the radius to get the diameter and height we get 0.251 cm or 2.51 mm
If we assume a softer steel with a density of 7.75 g/cm^3, the diameter comes to 2.54 mm