数字摄像在脉冲推力器性能分析中的应用

Application on performances analysis of solid impulsive thruster with digital camera

为更详细地分析脉冲推力器的实际工作性能,弥补传统推力和压力曲线分析的不足,利用高速数字摄像仪拍摄了脉冲推力器尾焰图像,根据图像特征进行了推力器工作性能的辅助分析,结果表明:尾焰图像特征可以反映脉冲推力器的点火启动性能和实际推力特性以及推力器的工作效率,将图像分析与推力或压力分析相结合可以更全面地进行脉冲推力器性能分析,有利于推力器设计性能的进一步提高。

The solid propellant impulsive thruster performances were analyzed from the plume image with a high-speed digital camera.With the high-speed photography the impulsive thruster exhaust plume characteristics can show not only the ignition and thrust capability, but also the energy efficiency of the thruster.It is concluded that the impulsive thruster performances can be improved by using the plume image analysis, especially with the complement of combination of image analysis and thrust and/or pressure analysis.