关键词: 复合推进剂;推进剂燃速;高压试验;水声测量

Abstract: he paper describes a newly developed system (the pump-impressed underwater acoustic emission system) to measure burning rate of composite solid propellant strands under high pressure (p≤25MPa). The system involves a pump impressing water, instruments adjusting pressure automatically and electromagnetic valves remotely handling high pressure. This advanced technique was combined into appliance for the first time in China. Experimental work of a period of more than a year indicated that the system could serve for measurements of burning rate and pressure exponent of composite solid propellants under high pressure (p≤25MPa).The coefficient of deviation was nearly 0. 6%, acheiving the level of the same measurement system in the United States.

Key words: Composite propellant;Propellant burning rate;High pressure test;Underwater acoustic mensurement