Abstract: A system for manually setting a timing value of an electronic fuze for an artillery projectile prior to firing without tools or electric power, and for displaying the set timing value in standard decimal format. Two adjacent setting rings, disposed about the outside of the fuze housing, are interconnected together with the housing so that one ring rotates with the other ring when the other ring is manually rotated in one direction about the housing axis, but is prevented from rotating when the other ring is rotated in an opposite direction about the housing axis. Each ring carries a plurality of numbers disposed about its outer periphery such that one of the numbers is axially aligned with an indication mark on the fuze housing at each setting of the ring. The two series of numbers are oriented laterally so that the two numbers aligned with the indication mark constitute the desired timing value.

Abstract: Mechanical devices which functon as energy bases for actuating safety and ming devices are described. A fluidic oscillator mounted in the nose of a missile or other similar device is provided and includes a diaphragm which is driven into oscillation by ram air entering the oscillator. A rod is coupled to the diaphragm and extends from the oscillator housing where it reciprocates at the rate of oscillation of the diaphragm. Mechanical means coupled to the rod are provided to utilize the oscillatory motion of the rod as an energy base for the actuation of a safety and arming device.

Abstract: A dual signature arming mechanism responsive to acceleration to cock a fig pin and responsive to propellant combustion gas pressure to pyrotechnically release a pivotally mounted detonator which rotates into position relative to said firing pin. A plunger restrained by the pyrotechnic release is provided to disable the arming mechanism if the pyrotechnic release is activated before a specific velocity is reached.