摘要
针对燃烧驱动连续波DF激光器,对仅预热主稀释剂He的情况下激光器的输出性能进行了理论分析和仿真研究,并与燃料常温条件的结果进行了对比分析。对于燃料体系为(H_2+NF_3+He)+D_2和(C_2H_4+NF_3+He)+D_2的DF激光器,在燃烧室产生的F原子流量不变的条件下,当主He预热至(1100 K,1300 K)时,激光器比功率较常温条件下分别约提高了(21%,24%)和(46%,56%),同时燃烧室所需的燃料消耗分别约减少了(25. 5%,29%)和(32%,36%)。在工程应用方面,主He可成功预热至800℃(1100 K)。因此,主He预热是有效且可行的燃料预热方案,有利于改善激光器的输出性能,为激光器的高效率和紧凑化发展进程提供新的技术路线。
A theoretical and simulated calculation of the processes proceeding in a gain generator of a combustion-driven cw DF chemical laser with preheated primary dilution He was reported. Investigation results demonstrate that for DF lasers with fuel systems of (H2+ NF3+ He) + D2 and (C2H4+ NF3+ He) + D2,when the primary dilution He is preheated to (1100 K,1300 K),the available specific output power is improved by (21%,24%) and (46%,56%) respectively; and at the same time,the fuel consumption in the combustor is reduced by (25. 5%,29%)and (32%,36%) respectively. In practical application,the primary dilution He can be heated to 800℃ (1100 K) successfully. Therefore,preheating the primary dilution He is a feasible and effective method to improve the laser output characteristics,which can facilitate the development of more compact chemical lasers with higher efficiency.
作者
房晓婷
袁圣付
华卫红
FANG Xiaoting;YUAN Shengfu;HUA Weihong(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2018年第6期171-176,共6页
Journal of National University of Defense Technology
基金
国家863计划资助项目(2015AA806037)
关键词
燃烧驱动DF激光器
主稀释剂预热
燃料预热
紧凑化
combustion-driven DF chemical laser
preheating of primary dilution
fuels preheating
compactness
