论文部分内容阅读
使用箔式铂热通量计,对两种几何形状不同的点火器进行瞬间和轴向热通量分布的测量。所用的参数是不同的点火药量,管子长度和喷管喉径。对烟火剂燃烧产生的粒状物质的粒度分布作了研究,并且推论了这种粒子分布对总热量的影响。辐射在总热量传递过程中相对来说是不重要的,而在点火器作用期间,业径发现,由于粒子传热引起的“点”的热通量是热传递的最重要方式之一,事实上,这种传热方式可能是固体火箭发动机中点火火焰最初出现的原因。
Using a foil platinum thermal flux meter, instantaneous and axial heat flux distribution measurements were performed on two igniters of different geometries. The parameters used are different ignition doses, tube length and nozzle throat diameter. The particle size distribution of the granular material produced by the pyrotechnic agent combustion was studied, and the effect of such particle distribution on the total heat quantity was deduced. Radiation is relatively unimportant in the total heat transfer process, and during the role of igniter, Yoshinobu found that the “point” heat flux due to particle heat transfer is one of the most important ways of heat transfer, , This heat transfer mode may be the reason for the initial appearance of the ignition flame in a solid rocket motor.