This paper analyses reason for flame swinging in high-altitude nozzle with the ratio of large area tested under the ground atmosphere, and describes the mechanism of unsymmetrical separation.
本文分析了高空大面积比喷管在地面试验时喷管内出现火焰偏摆的原因，叙述了喷管内气流不对称分离的机理。
2
During the ground test of solid rocket motors, after the reversal nozzles are opened, the shock wave enters the primary nozzle. This phenomenon makes tested data processing difficult.
带反喷管固体火箭发动机地面实验时，在其反向喷管打开后，激波进入主喷管情况下，会给数据处理带来困难。
3
The improved jet nozzle incorporates a coanda effect inducing element to enhance entrainment of particles to be ground within the vortex created by the micronizing jet mill.