Response functions of HMX and RDX burning rates with allowance for melting

Experimental values of the burning rate with variations in pressure and initial temperature are given, and identity of gasification laws in the wave for RDX and HMX is demonstrated. Differential parameters (sensitivities) of the burning rate and surface temperature are found. Based on these parameters, response functions of the burning rate to pressure oscillations are calculated. The calculations are performed with and without allowance for condensed phase melting. Allowance for melting is shown to reduce the amplitude of the real part of the response functions, while the thickness of the melted layer does not produce any significant effect on the response functions. Errors of calculating the response functions are presented. The calculated response functions are compared with experimental data.