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
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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(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 (H_2+ NF_3+ He) + D_2 and (C_2H_4+ NF_3+ He) + D_2,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.
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 (H_2+ NF_3+ He) + D_2 and (C_2H_4+ NF_3+ He) + D_2,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.
引文
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[3]邵艳,周进,林志勇,等.基于敏感性分析的DF化学动力学模型的简化[J].国防科技大学学报,2011,33(4):12-18.SHAO Yan,ZHOU Jin,LIN Zhiyong,et al.Simplification of a DF chemical laser kinetic model based on the sensitivity analysis[J].Journal of National University of Defense Technology,2011,33(4):12-18.(in Chinese)
[4]袁圣付,刘文广,华卫红,等.HYLTE与TRIP喷管在大功率氟化氘激光器中的应用对比分析[J].国防科技大学学报,2010,32(6):100-106.YUAN Shengfu,LIU Wenguang,HUA Weihong,et al.Analysis and comparative study of employing HYLTE and TRIP nozzles in high power DF laser[J].Journal of National University of Defense Technology,2010,32(6):100-106.(in Chinese)
[5]Horkovich A J.Directed energy weapons:promise&reality[C]//Proceedings of 37th AIAA Plasma Dynamics and Lasers Conference,2006.
[6]Bashkin A S,Gurov L V,Kurdyukov M V.Possibilities of improving the performance of an autonomous CW chemical DFlaser by replacing the slot nozzles by the ramp ones in the nozzle array[J].Quantum Electronics,2011,41(8):697-702.
[7]Fang X T,Yuan S F,Hua W H.Analysis of the possibility of fabricating compact combustion-driven DF lasers due to fuel preheating[J].Quantum Electronics,2016,46(9):790-794.
[8]Hyde J C,Hurlock S C.Advanced chemical laser nozzle concept[R].USA.:Rockwell International Corporation,1975.
[9]Fang X T,Yuan S F,Hua W H.Numerical simulation of a high efficiency combustion-driven HF laser with preheated fuels[J].Quantum Electronics,2017,47(3):275-279.
[10]华卫红.高功率连续波DF/HF化学激光器数值模拟研究[D].长沙:国防科技大学,1997.HUA Weihong.Numerical simulation of high energy continue wave DF/HF chemical laser[D].Changsha:National University of Defense Technology,1997.(in Chinese)