Application of Single Ignition Test to the Igniter Design of Small Solid Rocket Motor

The roles and aims of the single ignition test of the igniters, which used in small solid rocket motor, were introduced in this paper. Based on a lot of single ignition tests, the influence of mass of ignition powder, initial ignition volume, the design status of the nozzle closure and environmental conditions on the ignition characteristic of igniters were also analyzed. According to the single ignition tests results, some measures, such as changing the ignition manners, adjusting the ignition charge etc, had been adopted in the redesign of the igniter. The research indicated that the design modification had been utilized to solve the ignition delay, the ignition failure under low temperature etc ever occurred in the initial design completely.