【摘要】 实验通过采用最大输出脉冲能量为100J的TEACO2激光器,研究了从13~80J的激光脉冲能量对大气呼吸模式激光推进冲量耦合系数的影响。结果表明当脉冲能量在80~24J变化时,冲量耦合系数没有明显变化,当脉冲能量下降至22J以下时,冲量耦合系数下降52%。对这一特性进行了初步的理论分析,并通过改变实验环境气体压强,对这一理论进行了验证。更多还原

【Abstract】 A 100 J TEA CO₂ laser was employed to study the effects of variety of pulse energy from 13 J to 80 J on the momentum coefficient for air-breathing mode. The results indicated that the momentum coupling coefficient （C_m） had no obvious change when the pulse energy decreased from 80 J to 24 J. While the energy was under 22 J, the C_m declined 52%. A preliminary analysis of theory was given, and an experiment of changing the air pressure in the vacuum chamber was carried to verify that.更多还原