Experimental studies for plasmas ignition of solid propellants

Two types of solid propellants including double-base and nitramine propellants were used to determine the ignition delays under the conditions of plasma ignition constrast to conventional ignition. The experimental facility consisted of a plasma source that injected plasmas to the surface of the solid propellants. The surface temperature of the solid propellants was measured with thermocouples. The results show that the length of ignition delay for solid propellants is apparently short with hot and high-speed plasmas. There is a different ignition delay for two types of solid propellants with the similar plasma energy input, and a different ignition delay for the same solid propellant with the different plasma input.