机载成员逃逸系统激光点火设计

Design of laser ignition for fighter escapce ejection system

本文介绍了一种用于战斗机机载成员逃逸系统点火装置的设计。本系统采用4路集成化金属化高功率光纤耦合输出激光器模块作为点火光源,光纤芯径105μm,光纤输出功率0-5W可调。设计了基于固体继电器的激光器驱动电路,采用嵌入式微处理器控制多路激光起爆器,可精确实现多个机位的泄压、抛放舱盖、座椅弹射等系列动作,采用双路冗余的方法提高点火可靠性,与传统导爆索方式相比具有控制时序精准、可靠性高、更易实现复杂逻辑等优点。

This paper describes the design of laser ignition system for fighter escape ejection system. The system adopts metal, integrated high power fiber coupled laser modules as the igniting light source, with fiber core diameter 105 μ m and optical output power 0-5W adjustable. The laser driving circuit is based on solid relay. The laser ignition system uses embedded microprocessor to control multiple laser detonator, and can accurately achieve relief, throwing cover, seats ejection in at most three locations. The ignition system adopts dual redundant methods to improve ignition reliability, and has such advantages as precise timing control, high reliability, easier to implement complex logic and so on comparing with the traditional way of detonating cord.