Geometrical influence on solid rocket propellant ignition

Dragan Lemić, PhD (Eng)

 

The solid rocket propellant geometrical properties influence on the ignition process is discussed. The critical review of the recent investigations is presented. The mathematical model of the ignition process which enables determination of the two-dimensional temperature field in the solid rocket propellant heated by the external thermal flux, in the presence of the interior heat source due to exothermal chemical reaction, is developed. Reactant consumption is also involved. Nonsteady and nonlinear equations of the energy and mass conservation are numerically solved using the method of finite differences. The obtained results are presented in the form of tables and diagrams and qualitative agree with the reference data. The simplified model is also developed and the application possibility considered.

 

Key words: solid rocket propellant, ignition, geometrical properties.