Calculation of the ignition of a condensed material by a hot wire

Approximate analytical solution and numerical calculations of the ignition of a condensed material (CM) by a wire heated by direct electric current are used to study the effect of electrophysical characteristics and geometrical dimensions of the conductor and the thermokinetic properties of the solid fuel on the ignition delay. The results obtained are in satisfactory agreement with experimental data. Results of parametrical analysis are generalized by an interpolation formula.