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DETERMINATION OF SENSITIVITY TO IMPACT OF PYROTECHNIC FLASH COMPOSITIONS USING MODIFIED PICATINNY ARSENAL IMPACT TEST
PICATINNY ARSENAL DOVER NJ FELTMAN RESEARCH LABS
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Run-down impact sensitivity tests were conducted on FP-790 302050 CaAlKClO4, containing either elemental or CaCO3-coated Ca and 6040 KClO4Al. The effects of fuel particle size, aging of the composition after blending, exposure of the composition to 75 RH over various time intervals, and composition temperature were investigated. Flash compositions containing Ca as fuel were more impact sensitive than those containing atomized Al. The systems containing Ca also exhibited the most marked increase in impact sensitivity on heating to 110 C. No trend in impact sensitivity was apparent due to fuel particle size. Aging of the compositions in sealed containers for 1 mo resulted in a very slight increase in impact sensitivity, while exposure to 75 RH caused a marked decrease in impact sensitivity. The substitution of Ca-Al alloy for the individual fuel ingredients in FP 790 resulted in a slight increase in impact sensitivity.
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