[color:"orange"]Now the other things left to discover are about the damage taken (armor and part of the body that takes the blow)[/color]
The chance to receive a blow is listed in the description for each equipment type, and adds up to 100. Presumable the computer generates a random number to determine where the hit lands. The armour class of that particular piece of equipment is then used in determining the damage done, but the Larians have not described those calculations, AFAIK.