大气呼吸模式激光推进的理想动力循环模型  

Ideal power cycle model for air-breathing laser propulsion

作　　者：盛德仁[1] 史香锟 陈坚红[1] 李蔚[1] 

机构地区：[1]浙江大学热工与动力系统研究所,浙江杭州310027

出　　处：《热科学与技术》2015年第2期144-148,共5页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51276169)

摘　　要：大气呼吸模式激光推进的比冲和冲量耦合系数受制于其能量转换效率,对能量转换效率进行分析具有重要意义。建立了大气呼吸模式激光推进的理想动力循环模型,分析了激光推进过程中的能量转换效率,并探讨了提高能量转换效率的可行途径。研究结果表明,增大冲压比或定容增压比是提高能量转换效率的有效途径,其中增大飞行速度能有效增大冲压比,提高激光功率密度和改变工质掺杂特性能有效增大定容增压比。掺入水滴杂质形成的气液两相工质在激光推进领域具有较好的发展前景。The analysis of energy conversion efficiency of air-breathing laser propulsion is of great importance since both the specific impulse and the momentum coupling coefficient are subj ect to it. The ideal power cycle model for air-breathing laser propulsion was established.The energy conversion efficiency of the laser propulsion process was analyzed.The feasible ways to improve the energy conversion efficiency were also investigated.The results show that increasing the compression ratio or the pressure ratio is an effective way to improve the energy conversion efficiency.The compression ratio increases with an increase in the flight speed,and the pressure ratio increases with an increase in the laser power density or the alteration of the propellant doping content.The gas-liquid two phase propellant doped with water droplets is propective in the field of laser propulsion.

关 键 词：大气呼吸模式激光推进 理想动力循环 能量转换效率 

分 类 号：TK123[动力工程及工程热物理—工程热物理]