Technique for complex study of the ignition and combustion characteristics of solid propellants
The technique is presented for complex experimental study of the characteristics of ignition and combustion of solid propellants to determine the delay time of gasification and ignition, the recoil force of gasification products outflow from burning surface, the burning rate and quantity, particle size of the combustion condensed products of investigated samples in the laboratory. The obtained measurement results show that the partial replacement of the aluminum ultrafine powder Alex on iron ultrafine powder in the composite solid propellant based on ammonium perchlorate, butadiene rubber SKDM-80 leads to increase the gasification delay time in 25 times and reduce the ignition delay time in 1.6 times at the maximum value of radiation density flux 65 W/cm <sup>2</sup>, increase the recoil force of gasification products outflow from the burning surface by 26 % and the burning rate by 24 % at a nitrogen pressure of 3.9 MPa in the bomb of constant pressure, decrease the relative mass by 28 % and particle average diameter by 12 % of the condensed combustion products.