| 引用本文: | 房晓婷,袁圣付,华卫红.主稀释剂He预热对燃烧驱动DF激光器输出性能的影响分析.[J].国防科技大学学报,2018,40(6):171-176.[点击复制] |
| FANG Xiaoting,YUAN Shengfu,HUA Weihong.Effect of preheating primary dilution He on the output performance of a combustion-driven DF laser[J].Journal of National University of Defense Technology,2018,40(6):171-176[点击复制] |
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| 主稀释剂He预热对燃烧驱动DF激光器输出性能的影响分析 |
| 房晓婷, 袁圣付, 华卫红 |
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(国防科技大学 前沿交叉学科学院， 湖南 长沙 410073)
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| 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(H2+NF3+He)+D2和(C2H4+NF3+He)+D2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。 |
| 关键词: 燃烧驱动DF激光器 主稀释剂预热 燃料预热 紧凑化 |
| DOI：10.11887/j.cn.201806024 |
| 投稿日期：2017-09-27 |
| 基金项目:国家863计划资助项目(2015AA806037) |
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| Effect of preheating primary dilution He on the output performance of a combustion-driven DF laser |
| FANG Xiaoting, YUAN Shengfu, HUA Weihong |
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(College of Advanced Interdisciplinary Studies， National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| 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 (255%, 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. |
| Keywords: combustion-driven DF chemical laser preheating of primary dilution fuels preheating compactness |
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