Multi-use laser impulse pendulum and laser propulsion parameters measurement

作者：Li Jing^*; Tong Huifeng; Cai Jian; Tang Zhiping; Li Shengli

来源：Chinese Optics Letters, 2004, 2(11): 650-653.

• Ablation mode
• Air-breathing mode
• Laser propulsion parameters measurement
• Multi-use laser impulse pendulum (MULIP)
• Nd:glass lasers
• PVC film

In order to investigate the mechanisms of both the air-breathing and the ablation modes of laser propulsion under laboratory conditions, a multi-use laser impulse pendulum (MULIP) is developed. The measurable impulse range is from 1.0 × lO-4 to 3.8 × 10-3 N&middots. The experimental calibration data agree well with the theoretical calculated data. With MULIP, the ablation mode has been performed, in which a high power pulsed Nd:glass laser (λ = 1.06 μm, τ = 20 ns) and a gray PVC film sample are used. The experimental results show that the maximum momentum coupling coefficient Cm is 7.73 × 10-5 N/W, and the maximum specific impulse Isp is 208.6 s.

• 出版日期2004