Explosive plane-wave lens

Details Explosive plane-wave lens Explosive plane-wave lens

1987-03-12

1988-03-08

Nelson, Peter A.

Ammunition and explosives

Blasting

Detonation wave modifying

102307, 102310, 102476, F42B 102

Patent

active

047293187

ABSTRACT:
An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive.

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patent: 3985077 (1976-10-01), Conger et al.
patent: 4499828 (1985-02-01), Honodel
patent: 4537132 (1985-08-01), Sabranski et al.
patent: 4665826 (1987-05-01), Marer

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