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Combustion, Explosion and Shock Waves

2013 year, number 4

Optimization of the Initiation Capability of a Microdetonator

Ai-jun Не, Nan Yan, Wan-jun Geng, Tao Chen, Jun-feng Ma
Keywords: microdetonator, manganin gauge, output pressure, initiation


The initiation capability of a microdetonator 0.9 mm in diameter and 3 mm in height is studied. The critical height of the lead azide explosive is 1.8 mm. The optimal ratio of the heights of the primary and secondary explosives in a microdetonator is determined to be 0.7–2.3. At an identical ratio of the primary and secondary explosive heights, the output pressure changes from the highest to the lowest value in the sequence from CL-20 to HMX and then to RDX.