CO_2脉冲激光与气体相互作用实验  

Experimental investigation on CO_2 pulse laser and gas interaction in laser propulsion

作　　者：姚宏林[1] 窦志国[1] 王军[1] 王鹏[1] 李翀[1] 

机构地区：[1]装备指挥技术学院,北京101416

出　　处：《推进技术》2007年第5期481-484,共4页Journal of Propulsion Technology

基　　金：国家"九七三"项目(61328)

摘　　要：实验研究采用波长为10.6μm的CO2脉冲激光器,N2,He,CO2等三种纯净气体及上述气体的相互混合气作为推进工质时,通过实验舱内的冲击摆装置对抛物形光船获得的冲量耦合系数Cm进行了测量。实验发现气体工质的获得的冲量耦合系数Cm随气压增高而增大,通常气体工质的分子量越大,冲量耦合系数Cm越大;在低气压条件下,分子量较大的气体所占的比例越高,混合气获得的冲量耦合系数Cm越高;在高气压条件下,混合气体工质获得的冲量耦合系数与混合气体的种类及比例密切相关。The CO2 laser with wavelength 10.6 μm is adopted by experimental research. In experimental environment cabin, the parabolic lightcraft is fixed on impact pendulum. Using N2 , He, CO2 and mutual mixed gas of N2 , He and CO2 , different impulse coupling coefficient Cm is obtained. It increases with enhancement of the pressure and molecular weight of the gases. In low pressure, it increases with enhancement of the bigger molecular ratio in mixture. In high pressure, it correlates with gas species and component ratio.

关 键 词：激光推进 推进性能 耦合系数 激光工作介质 

分 类 号：TN249[电子电信—物理电子学] V439[航空宇航科学与技术—航空宇航推进理论与工程]