Experimental verification of the recoil force versus burning-rate dependence

Experimental results on the recoil-force dependence on the burning rate for composite propellants based on stoichiometric mixtures of ammonium perchlo rate (AP) and polymethylmethacrylate (PMMA) are presented. Propellants with additions of Al or Al2O3 were also tested to investigate dispersion phenom ena. Changes in the initial temperature, pressure, and external radiation a llowed variations of the burning rate. Thus, to deduce the burning rate fro m the recoil force, the parameters of the fitting law must be determined fo r each propellant composition under a particular set of external conditions .