AbstractThe object of this paper is to obtain expressions for the burning rate pressure exponent and the temperature sensitivity of AP‐based and HMX‐based CMDB propellants in terms of the respective physical constants on the basis of a recently developed model of combustion for CMDB propellants and to examine the effects, if any, on these two parameters, of the changes in propellant composition, AP particle size and pressure. Computer programs were developed for this purpose and the results obtained for typical sets of input data presented in the paper. While the results of the calculation indicate a markedly strong dependence of the pressure exponent and the temperature sensitivity on pressure and composition for both AP‐based and HMX‐based CMDB propellants, the parameters are characterized by far lesser dependence on AP particle size for the AP‐based propellant.