液体烧蚀激光推进推力形成机理实验方法

Experiment method on mechanism of thrust of laser-induced ablation propulsion with liquid propellant

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。

An effective experiment method was presented in order to discover mechanism of thrust of laser-induced ablation propulsion with liquid propellant to establish relevance between characters of thrust loading and evolution process of flux-field.Then it is easy to find which physical phenomena causes the thrust characters.A set of experimental system is established based on high-speed camera and force sensor with high frequency for the sake of applying the way to actual research work.The time sequence of laser,...