Aerosol-generating pyrotechnic compositions with components interacting in the combustion wave

Observations were performed of the burning surface of the pyrotechnic aerosol-generating KNO$_3$/melamine/iditol system. Its effectiveness in suppressing a diffusion hydrocarbon flame and the quantity of the combustion residue were measured. An extremal dependence of the flame suppression effectiveness on the KNO$_3$/melamine ratio was obtained. The maximum effectiveness corresponds to the disappearance of the melt from the burning surface. This is due to the formation of nonmelting organometallic compounds in the combustion wave. The maximum flame-suppression effectiveness is achieved when the entire metal of the oxidizer is involved in the reaction. Possible versions of such reactions are discussed. Examples of calculation of optimal compositions of this type are discussed.