关键词: 固体推进剂火箭发动机;燃烧稳定性;压力测量;压力仪表

Abstract: s compared measurement results of dynamic pressure with those by copper post gauge in a solid rocket motor burning oscillatedly, it is shown that the oscillatory pressure enhances the plastic deformation of the copper post, which has been verified in a T-shaped combustor. The oscillatory combustion in solid rocket engines can be determined by comparing the pressure measured with copper post gauge to the maximum pressure measured with static electrical measurement system.

Key words: Solid propellant rocket engine;Combustion stability;Pressure measurement;Pressure instrument