CAJ | 학술논문

采用高速摄像技术研究了铅丹-硅系延期药柱燃烧传播的动态特性，计算了药柱在不同压药压强下的位移及传播速度。结果表明：点火阶段和喷火阶段发生在药柱端部的2~3mm内，在内部压力作用下，燃烧产物向端部未反应区移动，为不稳定燃烧阶段；稳定燃烧阶段主要分布在药柱的中段，为层状和脉动燃烧特性，在药柱层切向和径向方向同时发生，并随着燃烧传播的进行而加剧，传播速度加快，发光区由暗红变至发白且周围有蓝色火焰；增加压药压强，药柱密度增大，点火和喷火端总长度减小，稳定燃烧阶段的燃速平衡位置平稳增大，波动变小。
채용고속섭상기술연구료연단-규계연기약주연소전파적동태특성，계산료약주재불동압약압강하적위이급전파속도。결과표명：점화계단화분화계단발생재약주단부적2~3mm내，재내부압력작용하，연소산물향단부미반응구이동，위불은정연소계단；은정연소계단주요분포재약주적중단，위층상화맥동연소특성，재약주층절향화경향방향동시발생，병수착연소전파적진행이가극，전파속도가쾌，발광구유암홍변지발백차주위유람색화염；증가압약압강，약주밀도증대，점화화분화단총장도감소，은정연소계단적연속평형위치평은증대，파동변소。
The high-speed camera technology was used to study the dynamic combustion propagation of the delay grain of silicon-red lead system. The displacement and burning rate of the delay grain under various loading pressure was calculated. The results show that ignition and eruption processes both occur in top and bottom length of 2~3mm respectively. For the inner pressure, combustion products at the ignition end move towards the unreacted zone, which constitutes the whole unsteady combustion process. Steady combustion process, mainly distributes in central section of the grain, which presents the laminar and pulse combustion, and happens simultaneously in tangential and radial directions. Meanwhile, the combustion propagation makes the propagation velocity accelerated and the color of luminous zone changes from dark red to bright white with blue flames around. With the loading pressure increasing, the charge density rises and the total length of the ignition and eruption end is minished, equilibrium position of the burning rate during the steady combustion process increases steadily and the fluctuation is little.