Abstract: A dual operating mode warhead comprises a generally cylindrical explosive charge having a longitudinal axis and an outer peripheral surface extending between front and rear facing initiation surfaces. A front detonator initiates peripheral detonation of the explosive charge at the front facing initiation surface and creates a detonation wave travelling through the explosive charge toward the rear facing initiation surface. A rear detonator initiates detonation of the explosive charge at the rear facing initiation surface and creates a detonation wave travelling through the explosive charge and toward the forward facing initiation surface. Against heavy armor, only the rear initiation is used. A precision shaped charge proximate the front facing surface is responsive to the rear detonation wave to produce a high speed forward travelling jet with excellent armor piercing capability.

Abstract: A warhead assembly having an explosive core and a surrounding annular package with several circumferential rows of different sized preformed fragments or rods. In each of one or more row, the fragments are alternately inverted keystone shapes arranged in a circle, with the adjacent sides fitting against each other in essentially pressure-confining contact. Further, the fragments which have their wider sides facing radially outward are composed of much higher density metal than the alternating fragments having their wider sides facing inward. This causes the lower density fragments to push the higher density fragments out at a high velocity when exploded.