弹射座椅激光点火程控器光路通断检测和点火时序研究  

Study on Optical Circuit On-off Detection and Ignition Timing of Laser Ignition Program Controller for Ejection Seat

作　　者：李帅 吴洪伟 李志刚 康俊峰 贺爱锋[2] 曹椿强[2] 井波[2] Li Shuai;Wu Hongwei;Li Zhigang;Kang Junfeng;He Aifeng;Cao Chunqiang;Jing Bo(Aerospace Life-Support Industries Co.,Ltd.,Xiangyang 441003,China;Shanxi Applied Physics and Chemistry Research Institute,Xi’an 710061,China)

机构地区：[1]航宇救生装备有限公司,湖北襄阳441003 [2]陕西应用物理化学研究所,陕西西安710061

出　　处：《航空科学技术》2023年第3期104-110,共7页Aeronautical Science & Technology

基　　金：航空科学基金(2019ZC010001)。

摘　　要：激光点火由于具有防静电、抗电磁干扰和安全性高的优点,在军事、航空、航天等领域具有重要的应用价值。本文主要针对激光点火在弹射座椅中的工程应用可行性及相关关键点火参数的选择进行理论与试验对比研究。利用有限元分析软件内置的物质与激光相互作用模型建立激光对奥克托金(HMX)炸药起爆过程火药温度分布的仿真模型,并进行激光起爆试验,起爆时间和温度分布模拟预测和试验结果基本相符;对检测方法进行改进,采用双波长激光器和2×1耦合器实现对全光路通断的检测;通过九路激光器的同时检测,实现激光信号传输时序的检测,试验结果满足弹射座椅九路点火总时间小于1s的要求。在此基础上进行了高低温条件下实际点火试验,完成了激光起爆,首次对多路激光点火时序进行研究,点火时序满足工程化应用的标准,该新型激光点火程控器可直接应用在弹射座椅上,验证了激光点火在防护救生领域应用的可行性。In this paper, because of the advantages of anti-static, anti-electromagnetic interference and high safety,laser ignition has important application value in military, aviation, space and other fields. The application of laser ignition technology in the ejection seat is researched. The simulation model of temperature distribution of HMX explosive during laser initiation is established by using the interaction model of material and laser in Finite element analysis software, and the laser initiation test is carried out. The simulation prediction of initiation time and temperature distribution is basically consistent with the experimental results. The detection method is improved, and a dual-wavelength laser and a 2×1 coupler are used to detect the on-off of the all-optical path. Through the simultaneous detection of nine laser channels, the detection of laser signal transmission sequence is realized. The test results meet the requirement that the total ignition time of nine channels of ejection seat is less than 1s. On this basis, the actual ignition test under the conditions of high and low temperature is carried out, and the laser initiation is completed, multi-channel laser ignition timing is studied for the first time, the ignition timing meets the standard of engineering application, and the new laser ignition program controller can be directly applied to the ejection seat, the feasibility of laser ignition in the field of protection and lifesaving is verified.

关 键 词：激光点火 光路检测 点火时序 程控器 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]