Effects of deformation on the burning behavior of solid propellants

In this paper, the burning rate of solid propellants under strains was investigated. In particular, the variations of burning rate at a deformation of 20% or less was measured using a novel apparatus. The results showed that the burning rate increased with increasing strain, but such increase became stable if the strain was increased to a threshold value. In addition, a quadratic functional correlation could be drawn between the burning rate ratio and strain, which was in agreement with the theoretical analysis.