论文部分内容阅读
为揭示液体烧蚀激光推进推力形成机理,提出了一种有效的实验方法,即建立推力加载过程与流场演化过程的时间关联性,寻找物理现象与推力特征之间的关系。为实现这种方法,建立了一套基于高速相机和高频响压电式力传感器的实验系统,并实现对激光器、闪光仪、高速相机和推力信号采集系统的工作时序的精确控制。实验结果表明,与国外相关文献提供的实验系统相比,依据本方法所建系统可以提高实验研究效率和精度,为分析液体烧蚀所形成推力的机理提供了一种可靠的实验方法。
In order to reveal the formation mechanism of liquid ablation laser propulsion, an effective experimental method is proposed to establish the time correlation between the thrust loading process and the evolution of the flow field and to find the relationship between the physical phenomena and the thrust characteristics. In order to realize this method, a set of experimental system based on high-speed camera and high-frequency piezoelectric transducer was set up and the working timing of laser, flash, high-speed camera and thrust signal acquisition system was precisely controlled. The experimental results show that compared with the experimental system provided by foreign literature, the proposed system can improve the efficiency and accuracy of experimental research and provide a reliable experimental method for analyzing the mechanism of thrust formed by liquid ablation.