大气呼吸模式激光推进的理想动力循环模型

The Ideal Power Cycle Model for Air-Breathing Mode Laser Propulsion

中文关键词: 大气呼吸模式激光推进  理想动力循环  能量转换效率

英文关键词: air-breathing mode laser propulsion  ideal power cycle  energy conversion efficiency

中文摘要:

      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。

英文摘要:

      Analysis of energy conversion efficiency for air-breathing mode laser propulsion is very important since both the specific impulse and the momentum coupling coefficient are subject to it. The ideal power cycle model for air-breathing mode laser propulsion is established. The energy conversion efficiency of laser propulsion process is analyzed. And the feasible ways to improve the energy conversion efficiency are investigated. The results show that the increasing of the compression ratio or the pressure ratio is the effective ways to improve the energy conversion efficiency. The compression ratio could be increased by the increasing of flight speed, and the pressure ratio could be increased by the improving of the laser power density or the changing of the propellant doping content. The gas-liquid two phase propellant, which was doped with water droplets, has good development prospect in the field of laser propulsion.