Some Studies of the Propagation of Detonation between Small Confined Explosive Charges

A series of measurements was done of the critical conditions for propagation of detonation between highly confined charges in the size range of fuze explosive train components. The point at which propagation across a gap or other relative displacement should occur for fifty percent of trials was det...

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Bibliographic Details
Main Authors: Stresau, Jr , R H, Starr, Jr, L E
Format: Report
Language:English
Subjects:
Ammunition and Explosives
AZIDES
BRUCETON METHOD
CONFINEMENT(NUCLEAR REACTORS)
DENSITY
DETONATION WAVES
DETONATIONS
Explosions
EXPLOSIVE CHARGES
EXPLOSIVE TRAINS
EXPLOSIVES
FUZES(ORDNANCE)
LEAD COMPOUNDS
MATERIAL SEPARATION
PRIMERS
PROPAGATION
SENSITIVITY
SHOCK WAVES
SPACERS
STYPHNATES
TEST METHODS
TETRYL
WAVE PROPAGATION
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Summary:A series of measurements was done of the critical conditions for propagation of detonation between highly confined charges in the size range of fuze explosive train components. The point at which propagation across a gap or other relative displacement should occur for fifty percent of trials was determined by varying the displacement in accordance with the socalled Bruceton up and down method. Critical axial air gaps were determined as functions of column diameter, density, explosive material, and column length and critical transverse displacement was measured as a function of explosive material. Axial gap, as might be expected, varies directly with donor diameter. For any given donar diameter there is, apparently, an optimum acceptor diameter which is slightly smaller than the donor diameter. The gap also increases with donor column length, but a given increase in quantity of explosive is more effective when added by increasing the diameter than by increasing the length.