Design and Test of Ignition for Underwater Solid Rocket Motor

Ignition device with fireworks agent was designed using dual ignition cylinders for dual thrust underwater solid rocket motor(SRM). The ignition charge was obtained via theoretical calculation, estimation by empirical formula, similar SRM analog, and working condition revision. The tests for standard SRM in the range of 5～14 MPa, conformity of ignition, ignition cylinder, and full size SRM were performed. The results show that the ignition and the grain combustion are normal, the SRM starts timely, the curves of pressure-time and thrust-time are satisfying, the ignitions are in step. This ignition method is verified reasonable and valid.