Theoretical Foundations of the Physical-Mathematical Model of the Non-Stationary Combustion Process of Solid Fuel and Derivation of Methods for the Calculation of Non-Stationary Velocity

This study investigates the physico-chemical processes in the gas phase, considering the methods for calculating of burning rate of solid propellant and physico-mathematical model of non-stationary combustion of solid fuel, we study the equation for heat propagation in the k–phase, the specification of the initial and bounday condition, the fundamental solution of the heat conduction equation in the k–phase is obtained.