激光驱动飞片飞行特征研究进展

Research Progress in the Flight Characteristics of Laser?driven Flyer

激光驱动飞片是高效的冲击加载方法,作为激光起爆炸药的一种方式,具有本质安全性。激光驱动飞片起爆炸药的可靠度与飞片的飞行特性密切相关,飞片的飞行速度和表观形貌(平面度和完整性)是成功起爆的两个重要参数。因此,从飞片的飞行特性的表征手段与影响因素两方面出发,综述了激光驱动飞片技术的研究进展。针对单层飞片,介绍了观测、表征和接收方法,分析讨论了飞片性能影响因素作用规律的近年研究成果,梳理归纳了现有研究中存在的不足,指出了今后的发展方向,包括激光驱动飞片飞行过程的系统物理模型和激光驱动飞片的平面度和完整性定量参数。

Laser-driven flyer is an efficient shock loading method,which has essential safety as a method of initiating explosives by laser.The reliability of initiating explosives by laser-driven flyer is closely related to the flight characteristics of flyer.The flying velocity and apparent morphology(planarity and integrity)of flyer are two important parameters for a successful initiation.Therefore,in this paper,the research progresses of laser-driven flyer technique were reviewed from two aspects of characterization means and influencing factors of flight properties of flyer.Focusing on laser-driven single layer foils,the methods of observation,characterization and reception were introduced.The research findings for the function law of influencing factors of flight performance in recent years were analyzed and discussed.The deficiencies existing in current researches were hackled and summarized and the future development directions,including the systematic physical model of flight process of laser-driven flyer and quantitative parameters of planarity and integrity of laser-driven flyer,were pointed out.