| 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。 |
| 关键词: 激光推进 推进性能 耦合系数 激光工作介质 |
| DOI： |
| 分类号:TN241;V439 |
| 基金项目:国家“九七三”项目(61328) |
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| Experimental investigation on CO2 pulse laser and gas interaction in laser propulsion |
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YAO Hong-lin1, DOU Zhi-guo2, WANG Jun3, WANG Peng4, LI Chong5
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1.Inst.of Equipment Command and Technology,Beijing 101416,China;2.Inst.of Equipment Command and Technology,Beijing 101417,China;3.Inst.of Equipment Command and Technology,Beijing 101418,China;4.Inst.of Equipment Command and Technology,Beijing 101419,China;5.Inst.of Equipment Command and Technology,Beijing 101420,China
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| Abstract: |
| 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,CO2and 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. |
| Key words: Laser propulsion Propulsive performance Coupling coefficient Laser working medium |
