Accession Number : ADD014903

Title :   Explosive Logic Clock.

Descriptive Note : Patent, Filed 23 Dec 81, patented 12 Mar 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Silvia, Denis A

Report Date : 12 Mar 1991

Pagination or Media Count : 13

Abstract : This patent discloses an explosive network forming an explosive logic clock for opening a time window during which a set of theoretically identical detonators must fire. The explosive logic clock also examines the first detonation to determine whether or not it is premature before propagating the detonations on to the explosive safing and arming network. The clock is constructed with a plurality of detonators, each having a first branch of a branched outlet trail leading to a detonator time delay trail leading further to a logic switch. The logic switches are interconnected such that the detonation signal from the first detonator to detonate is extinguished in that detonator's logic switch while the remaining logic switch are set by the first detonation signal to allow propagation of their own detonation signals on to the safing/arming network. A 2nd branch of the branched outlet trail simultaneously propagates the detonation signal from the first detonator to a clock time delay which delays the first detonation signal and opens the time window. When the delay imposed by the clock time delay expires, the first detonation signal propagates to a clock logic switch which is interconnected with and set by the detonator logic switches to allow propagation of the first signal. When a 2nd detonation signal is generated, it passes down the detonator time delay and through the detonator logic switch to the clock logic switch. When the 2nd detonation occurs within the time window, the clock logic switch is set by the 2nd detonation signal.

Descriptors :   ARMING DEVICES, CLOCKS, DELAY, DETONATIONS, DETONATORS, EXPLOSIVE FORMING, EXPLOSIVES, LOGIC, NETWORKS, PATENTS, SIGNALS, SWITCHES, TIME, TIME INTERVALS, WINDOWS

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE