Several nitramine propellants are quenched at different initial pressure(up to 300 MPa)by rapid pressure decay in a small-sized ballistic simulator, which is different from the ordinary vented chamber in that it creats the burning environment of the propellant similar to that gun bore,and that the initial pressure before the extinction are relatively high.

Improvement and application of multifunction pulverized burners in the Datong Thermal Electric Limited Company are introduced,the mainpoint is low load stabilized combustion and saving oil practice in ignition,and the result of test is given.