Suppression of Super-Rate and Plateau Burning

It should be noted that both KNO3 and K2SO4 are useful additives for eliminating the luminous flame generated at a rocket nozzle and also for suppressing the formation of muzzle flash generated at the exit of a gun barrel. The potassium atoms generated in the gun barrel by the decomposition of these potassium salts are believed to act as a flame retardant. 

1 Fifer, R. L, Chemistry of Nitrate Ester and Nitramine Propellants, Fundamentals of Solid-Propellant Combustion (Eds. Kuo, K. K and Summerfield, M.), Progress in Astronautics and Aeronautics, Vol. 90, Chapter 4, AlAA, New York, 1984. 

4 Huggett, C., Combustion of Solid Propellants, Combustion Processes, High-Speed Aerodynamics and Jet Propulsion Series, Vol. 2, Princeton University Press, Princeton, NJ, 1956, pp. 514-574. 

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