Combustion mechanism of mixtures of binders capable of self-sustained combustion with inert and active fillers

A single mechanism for the combustion of mixtures of binders capable of self-sustained combustion with inert or active fillers is proposed. A mathematical model for the combustion of such mixtures is developed which takes into account the curvature of the burning surface of binder layers and the associated change in its burning rate. Parametric studies of the model are performed, and the calculation results are compared with experimental data on the combustion of mixtures of active binders with SiO$_2$, HMX, AP, and CL-20. It is shown that the proposed combustion mechanism and the developed model allow a unified explanation of all available experimental data for the class of compounds considered.