固体推进剂在高压水射流作用下的点火模式

Ignition Mode of Solid Propellant Processed with High-Pressure Waterjet

研究固体推进剂在高压水射流作用下的点火模式.利用压电传感器、热电偶和扫描电镜测量了丁羟固体推进剂在高压水射流作用下的压力峰值、温度和组分变化,分析了丁羟固体推进剂在高压水射流作用下的点火模式.研究结果表明,含二茂铁的丁羟固体推进剂在高压水射流作用下存在3种点火模式,其中最可能发生的是由高氯酸铵、二茂铁和水蒸气组成的混合体系被机械火花或静电火花点燃.

Studies the ignition mode of solid propellant processed with high-pressure waterjet. Using piezoelectricity, thermoelectric couple and scanning electron microscope, the pressure peak, temperature rise and components variation of hydroyl-terminated polybutadiene （HTPB） solid propellant processed with high-pressure waterjet are measured experimentally. Ignition modes of HTPB solid propellant processed with high-pressure waterjet are theoretically analyzed. The results showed that HTPB solid propellant containing ferrocene has three ignition modes when processed with high-pressure waterjet, and the mode in which a mixed system comprising ammonium perchlorate, ferrocene and vapor is ignited by mechanical spark or electrostatic spark is most likely to occur.