Study of Performance of Some Selected TBX's

Document Type : Original Article

Authors

Egyptian Armed Forces, Egypt.

Abstract

Recently, many countries had motivated new researches in advanced compositions of thermobaric explosives (TBX's) due to its high destructive effects on individuals fortified inside caves and bunkers compared to the limited effects of blast and fragment bombs. In this paper, EXPLO5 steady state equilibrium program was used to calculate the explosive
characteristics and performance parameters for a number of thermobaric explosive formulations based on: mono propellant, as an explosive filler, and aluminum powder as a fuel metal. According to the results of EXPLO5 program some compositions were selected, and according to the possibility of processability conditions, one thermobaric composition
was prepared in test cartridges of 2 kg each. Blasting field area was designed to test the prepared thermobaric charge against a reference TNT charge of the same weight. The pressure-time history, using 12 pressure transducers located at different distances from the explosion center, was measured. The explosion events were monitored by high speed camera
while the pressure-time history and positive phase duration were registered by data acquisition measuring system. Test results demonstrated that the positive phase impulse of tested thermobaric explosive charge increased by 10-25 % compared to reference TNT explosive.

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