Induction period of a two-component aerosol of liquid oxidizer and propellant

The problem of self-ignition of a two-component aerosol consisting of unifo rmly mixed drops of an oxidizer and a propellant reacting in the gas phase is considered. The process of self-ignition of such an aerosol is divided i nto two stages: vaporization of aerosol components and subsequent chemical heating of the mixture. An approximate analytical formula is derived for th e period of self-ignition of a two-component aerosol. This formula takes in to account the differences in thermophysical characteristics of aerosol liq uids, mass concentrations, sizes of the drops of aerosol components, and th e difference between the initial temperature of these drops and the initial temperature of the gas phase. The calculation results for the self-ignitio n period obtained using this analytical formula and the results of numerica l solution of the problem in the zero-dimensional formulation coincide with in 20% in a wide range of the governing parameters of the problem.