An Advanced Flash Suppression Network Involving Alkali Salts
Final technical rept.
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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The prediction of muzzle flash suppression has been hampered by the lack of detailed understanding of the fundamental suppression mechanism. Indirect evidence points toward a gas-phase chemical reaction as the general mechanism. A recent paper by Hynes, Steinberg, and Schofield on the elementary chemistry involved in the suppression of oxygen-rich hydrogen flames by sodium salts provides the basis for developing an advanced muzzle flash suppression mechanism by potassium salts. The kinetic network to be described in this report was deduced by a systematic and duplicable methodology. The reactive species are H, O, OH, H2, O2, H20 together with CO and CO2 and the suppression species K, KO, KO2, KOH, and KH. N2 is a nonreactive diluent. All unimolecular, two- and three-body reactions possible among this set of reactive species were generated. Reactions in which multiple bonds were broken were eliminated from further consideration. Where possible, rate coefficients for the remaining reactions were taken from the literature. Those for which no literature values could be found were assigned gas-kinetic values.