Abstract: A detonation system for explosive rounds, such as a fuel air explosive, is made by providing a sealed launch tube detonator assembly arrangement. The cloud detonator provides for a booster charge which is attached to a pyro delay detonator. The pyro delay detonator permits the booster charge to be hurled a discrete distance into the fuel air cloud to insure proper cloud detonator position while at the same time waiting an appropriate time interval to permit complete cloud formation. The detonator assembly is self-sealing in its launch tube to prevent gases, which hurl the detonator assembly out of the launch tube, from burning the fuel air cloud. The cloud detonator assembly itself contains unique safety features which will prevent premature partial burning of booster charge.

Abstract: A fuel-air explosive weapon launched from a remote distance is used for clearing minefields. A set timing pattern in the operation of the minefield clearance round permits varied range through retarding the length of time that a programed sequence of events occurs at the launch site. Upon flight, the round follows a predetermined pattern in deployment of a parachute, firing cloud detonators and initiation of a burster charge. An extendable probe at the front of the round permits detonation at a predetermined level above ground. The descent by parachute provides a relatively stable launching platform for cloud detonators if they are fired prior to the burster charge detonation for dispersal of the fuel-air cloud.