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ISSN Печать: 2150-766X
ISSN Онлайн: 2150-7678
Indexed in
CONVECTIVE BURNING STUDIES OF PYROTECHNIC POWDERS
Краткое описание
The ignition threshold and combustion characteristics of two pyrotechnic powders (A and B) initiated by mechanical stimulation were examined. A piston-driven compaction (PDC) experiment was used to compare the two powders. The two powders differ in their oxidizer type and initial particle size distribution. It was found that Pyrotechnic A, formulated with potassium perchlorate, had a lower ignition threshold (∼80 m/s) than Pyrotechnic B (∼120 m/s), which was formulated with a blend of ammonium nitrate and barium nitrate. Compaction wave front velocities through the sample were a function of piston velocity and were comparable for the two samples; however, the characteristics of a "sustained" combustion front differed between the two samples. Powder models were developed for the two materials and used to simulate the PDC experiments.