The effect of small variations of target hardness on the depth of penetration for nominally identical target material has not been addressed systematically in p
A design method of a new shaped spherical reflector antenna with a horn feed for wide-angle scanning is presented,in which the horn's phase center need not
when a gun fires, a large amount of heat is brought in the barrel. Erosion/wear and security problems(self ignition of the propellant) associated with this high