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| Multi-use laser impulse pendulum and laser propulsion parameters measurement | |
| 作者姓名： | 李静 童慧峰 蔡建 唐志平 李胜利 |
| 作者单位： | Key Lab for Mechanical Behavior and Design of Materials，Key Lab for Mechanical Behavior and Design of Materials，Key Lab for Mechanical Behavior and Design of Materials，Key Lab for Mechanical Behavior and Design of Materials，Key Lab for Mechanical Behavior and Design of Materials Chinese of Academy Sciences，University of Science and Technology of China，Hefei 230027，Chinese of Academy Sciences，University of Science and Technology of China，Hefei 230027，Chinese of Academy Sciences，University of Science and Technology of China，Hefei 230027，Chinese of Academy Sciences，University of Science and Technology of China，Hefei 230027，Chinese of Academy Sciences，University of Science and Technology of China，Hefei 230027 |
| 摘 要： | 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 1.0×10-4 to 3.8×10-3 N·s. 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= 1.06μm, 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. |
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