| 本文已被：浏览 1341次 下载 495次 |
码上扫一扫！ |
|
|
| 透射式水工质的高耦合效率激光推进模式 |
|
张翼1, 鲁欣1, 郑志远1,2,3, 刘峰1, 朱鹏飞1, 李汉明1,4, 李玉同1, 李英俊1,4, 张杰1
|
|
1.中国科学院物理研究所 北京100080;2.中国地质大学材料科学与工程学院;3.北京100083;4.中国矿业大学 北京100083
|
|
| 摘要: |
| 为了提高激光推进的耦合效率,防止光学器件污染,提出了透射式液体工质的激光推进模式。在这种推进模式中,Nd:YAG固体激光器中产生的450 mJ,7 ns激光穿过透明的玻璃基底后,与燃烧室中的液体推进剂相互作用,产生的等离子体在玻璃基底、燃烧室和液体推进剂的约束下膨胀,产生很高效率的动量转换,使靶获得初速度。纯水和黑墨水分别被用作推进剂,通过比较实验结果发现,在这种模式中墨水比水更适合做推进剂。通过改变燃烧室的长度和孔径,得到的耦合系数的最大值为17 858.3 N/MW。 |
| 关键词: 激光推进 液体推进剂 耦合系数 |
| DOI： |
| 分类号:V439 |
| 基金项目:国家“九七三”项目(61328) |
|
| High coupling coefficient laser propulsion mode |
|
ZHANG Yi,LU Xin,ZHENG Zhi-yuan,LIU Feng,ZHU Peng-fei,LI Han-ming,LI Yu-tong,LI Ying-jun,ZHANG Jie
|
|
1.Inst.of Physics,Chinese Academy of Sciences,Beijing 100080,China;2.School of Materials Science and Technology,China Univ.of Geosciences,Beijing 100083,China;3.China Univ.of Mining and Technology,Beijing 100083,China
|
| Abstract: |
| A high coupling coefficient laser propulsion mode—transmitted liquid-confined laser propulsion is proposed.In this mode,450 mJ,7 ns laser pulses transmit through a glass substrate and then are focused into the liquid propellant.The plasma generated by laser ablation is confined by the liquid propellant,burning room and glass substrate,and produce high efficient momentum transfer.Both water and ink are tested as propellants.By comparing with water,ink is chosen as a better propellant.The influences of diameter and length of the burning room for holding liquid on the coupling coefficient are studied.The maximum coupling coefficient got in the experiment is up to 17 858.3 N/MW. |
| Key words: Laser propulsion Liquid propellant Coupling coefficient |
