CALCULATION OF THE RATE OF COMBUSTION OF A METALLIZED COMPOSITE SOLID PROPELLANT WITH ALLOWANCE FOR THE SIZE DISTRIBUTION OF AGGLOMERATES

A physicomathematical model of combustion of a metallized composite solid propellant based on ammonium perchlorate has been presented. The model takes account of the thermal effect of decomposition of a condensed phase (c phase), convection, diffusion, the exothermal chemical reaction in a gas phase, the heating and combustion of aluminum particles in the gas flow, and the velocity lag of the particles behind the gas. The in fluence of the granulometric composition of aluminum particles escaping from the combustion surface on the linear rate of combustion has been investigated. It has been shown that information not only on the kinetics of chemical reactions in the gas phase, but also on the granulometric composition of aluminum particles escaping from the surface of the c phase into the gas, is of importance for determination of the linear rate of combustion.
   
Author:  V. A. Poryazov and A. Yu. Krainov
Keywords:  metallized solid propellant, rate of combustion, aluminum powder, granulometric composition, gas phase
Page:  579