Abstract: A shock mount comprising a hollow outer sleeve, open at one end, which contains a hollow inner sleeve, likewise open at one end but having longitudinal external grooves which connect with the internal cavity of the inner sleeve near its open end. The inner sleeve contains a shock attenuating medium, a relatively fragile device, to which are connected loop bendable leads, and a spacer for maintaining the relative positions of the components, said spacer being slotted to preserve the looped portion of each lead. Upon application of the shock pulse the container crushes the shock attenuating medium, thereby attenuating the shock pulse, and the looped portion of each lead is drawn through its corresponding slot to follow the container, thereby preserving the signal linkage.

Abstract: A fuze having an impact delay implemented by strobing the count from a time-of-flight counter to set a down counter after an impact is sensed and then decrementing the down counter to a predetermined count at which point a firing signal is passed.

Abstract: A plurality of rings each having gear teeth in the outer periphery thereof and rotatably mounted for individual rotation, each ring having associated therewith a fixed electrical contact and a wiper contact for engaging a plurality of fixed contacts as the ring rotates. A drive gear associated with each of said rings and driven from a single control, said drive gears being mounted so that only one gear is engaged with its associated ring at any one time and the drive gear to be engaged is selected by means of a ratchet and pawl that operates from a single locking control and rotates a wheel having escarpments thereon for moving the drive gears axially into engagement with the rings.

Abstract: A plurality of Geneva gears including rings each having Geneva elements formed in the outer periphery thereof and rotatably mounted for individual rotation, each Geneva gear having associated therewith a fixed electrical contact and a wiper contact for engaging a plurality of fixed conductors as the Geneva gear rotates. A driving crank associated with each Geneva gear and driven through a frictional clutch from a single control, said Geneva gears having a locking mechanism associated therewith so that only one Geneva gear is free to rotate at any one time. The locking means is operated by a ratchet and pawl that operates from a single locking control.

Abstract: A relative velocity sensor for projectile fuzes and the like provides adaptive penetration delay for maximum effectiveness. A pair of contact activated switches on the fuze spaced a known distance apart provide electrical signals useful for calculating the relative velocity of the projectile with respect to a target. An adaptive penetration delay circuit utilizes these signals to detonate the projectile after a delay period determined by the relative velocity. Low graze angle impacts will cause immediate detonation of the fuze. The invention provides simple, effective means for achieving adaptive target penetration delay with very low in-flight power consumption.