微小圆管中B/AP混合物燃料的传热和燃速研究  

Heat transfer and burning rate studies of B/AP mixture fuels in mini-tubes

作　　者：李和平[1] 汪洋[2] 周俊虎[1] 刘建忠[1] 敖文[1] 杨卫娟[1] 岑可法[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,杭州310027 [2]浙江大学先进技术研究院,杭州310027

出　　处：《固体火箭技术》2013年第5期632-636,646,共6页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(51106135);中国博士后科学基金(20110491769);中央高校基本科研业务费专项资金(2012FZA4014);浙江省自然科学基金(LY12E06006)

摘　　要：微推进系统作为微型航天器的核心部件,其内部推进剂燃料的点火燃烧性能将直接影响到微型航天器的高效稳定运行。借助红外热像仪记录微小圆管中无定形硼和AP混合物燃料点火燃烧的全过程,通过观测微小圆管壁面温度的变化,探究其内部的传热过程,并借助图表取点GRAFULA软件分析红外图片,计算得到微小圆管中燃面的移动速度,研究管径尺寸、燃料配比等因素对燃速的影响。结果显示,对B/AP质量配比1∶1的燃料,燃速随着管径的减小而增大;而对配比1∶3的燃料,燃速随着管径的减小而减小。微小圆管中的燃料在轴线方向存在热传递,混合物中AP的分解控制着整个反应进程。As micro-propulsion system is the core component of the micro-spacecraft,ignition and combustion characteristics of propellant fuels directly affect the stabilization and efficiency of the micro-spacecraft.With the help of the infrared camera,the whole process of ignition and combustion of the mixture fuels of amorphous boron and ammonium perchlorate was recorded,and the internal heat transfer process was studied through the observation of mini-tube wall temperature changes.In addition,the moving speed of the burning surface in mini-tubes was calculated by means of the software of GRAFULA,and effect of diameter size,fuel/oxidant ratio and other factors on the burning rate was researched.The results show that for fuels with big reaction enthalpy,the burning rate increases with the decrease of tube diameter;for fuels with small reaction enthalpy,the burning rate decreases with decreasing tube diameter.There exists heat transfer in the axial direction for fuels in mini-tubes,and AP decomposition in the mixture controls the entire reaction process.

关 键 词：微小圆管 混合物燃料 红外 传热 燃速 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]