ANALYSIS OF ELEMENTARY MODELS FOR THE STEADY-STATE COMBUSTION OF SOLID-PROPELLANTS

An analysis is conducted of various theoretical models for the combust ion of condensed systems: combustion regimes involving the destruction and dispersion of solid, foaming of the melting substance, vaporizati on or sublimation of decomposing substances, decomposition and oxidati on of propellant components in quasihomogeneous composite systems, and heterogeneous reactions in laminated systems (chemical arcs, sandwich es). The main combustion characteristics: burning rate, burning surfac e temperature, dependence of burning rate on pressure and initial temp erature as well as on other kinetic, thermodynamic, and physical param eters, are studied analytically and numerically. Conclusions are made about the mechanism and the leading stage of the combustion, as well a s the methods of varying the combustion characteristics of different c ondensed systems, including explosives and solid propellants.