泵压水下声发射法测定复合固体推进剂高压燃速

PUMP-IMPRESSED UNDERWATER ACOUSTIC EMISSION SYSTEM FOR MEASUREMENTS OF HIGH PRESSURE BURNING RATE OF COMPOSITE SOLID PROPELLANTS

介绍一种国内最新研制成功的、在高压（ｐ≤２５ＭＰａ）条件下测定复合固体推进剂药条燃速的测试技术──泵压水下声发射法。该测试系统采用水泵增压、仪表自动调压、高压电磁阀遥控卸载等多项国内首次应用的先进技术。经过一年多的实际应用证明，该系统能服务于复合固体推进剂高压（Ｐ≤２５ＭＰａ）条件下的燃速、燃速压强指数的测定。其变异系数达０．６％。

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.