脉冲数目和重复频率对纳秒激光推进的影响

陈豪; 石磊; 马丽华; 彭志明; 徐志燕; 乔忆炜

脉冲数目和重复频率对纳秒激光推进的影响

1.
空军工程大学信息与导航学院,陕西西安 710077;
2.
中国人民解放军 95107部队,广东广州 510500;
3.
空军工程大学航空航天工程学院,陕西西安 710038

基金项目:

国家自然科学基金（61108068）

详细信息

作者简介:
陈豪（1989-），男，硕士生，主要从事激光推进方面的研究。Email：chenhao_8889@163.com；马丽华（1974-），女，教授，硕士生导师，主要从事光通信与光电对抗仿真方面的研究。Email：hua_marry@sohu.com

陈豪（1989-），男，硕士生，主要从事激光推进方面的研究。Email：chenhao_8889@163.com；马丽华（1974-），女，教授，硕士生导师，主要从事光通信与光电对抗仿真方面的研究。Email：hua_marry@sohu.com

中图分类号: TN249;V439

Effect of laser pulse number and repetition frequency on nanosecond laser propulsion

1.
School of Information and Navigation,Air Force Engineering University,Xi'an 710077,China;
2.
Army 95107 of PLA,Guangzhou 510500,China;
3.
School of Aeronautics and Astronatics Engineering,Xi'an 710038,China

摘要: 以抛物形点聚焦激光推进器模型为研究对象，数值模拟了脉冲重复频率在2~50Hz范围内吸气式多脉冲纳秒激光推进的流场演变过程，分析了脉冲数目和重复频率对推进性能的影响。结果表明：随着脉冲数目的增加，喷管内气体密度减小、温度升高，导致平均冲量耦合系数下降，但纳秒脉冲激光作用获得的平均冲量耦合系数明显高于微秒脉冲激光；相同脉冲数目条件下，随着脉冲重复频率的增大，流场恢复时间缩短，使得流场状态不能及时恢复，导致平均冲量耦合系数下降，其中脉冲重复频率f10 Hz时的下降趋势明显大于f10 Hz。
- 激光推进 /
- 纳秒激光 /
- 脉冲数目 /
- 脉冲重复频率 /
- 平均冲量耦合系数
Abstract: The parabolic point focusing thruster model was adopted as research object. The development process of flow field of air-breathing nanosecond laser propulsion with pulse repetition frequency of 2-50 Hz was numerically simulated, and the Effect of nanosecond laser pulse number and pulse repetition frequency on performance of laser propulsion was analyzed. The results indicate that with the increase of pulse number, the average impulse coupling coefficient decreased due to the reducing air density and increasing temperature. The average impulse coupling coefficient with nanosecond laser is significantly higher than that with microsecond laser, though. With the same pulse number, when the pulse repetition frequency increased, the flow field had less time to recover, leading to the decreasing average impulse coupling coefficient, and the decreasing trend is much more clear in pulse repetition frequency of f10 Hz than in f10 Hz.
- laser propulsion /
- nanosecond laser /
- pulse number /
- pulse repetition frequency /
- average impulse coupling coefficient

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脉冲数目和重复频率对纳秒激光推进的影响

Effect of laser pulse number and repetition frequency on nanosecond laser propulsion

计量

脉冲数目和重复频率对纳秒激光推进的影响

1. 空军工程大学信息与导航学院,陕西西安 710077;

2. 中国人民解放军 95107部队,广东广州 510500;

3. 空军工程大学航空航天工程学院,陕西西安 710038

English Abstract

Effect of laser pulse number and repetition frequency on nanosecond laser propulsion

1. School of Information and Navigation,Air Force Engineering University,Xi'an 710077,China;

2. Army 95107 of PLA,Guangzhou 510500,China;

3. School of Aeronautics and Astronatics Engineering,Xi'an 710038,China

全文HTML

目录

留言板

脉冲数目和重复频率对纳秒激光推进的影响

Effect of laser pulse number and repetition frequency on nanosecond laser propulsion

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出版历程

脉冲数目和重复频率对纳秒激光推进的影响

1. 空军工程大学 信息与导航学院,陕西 西安 710077; 2. 中国人民解放军 95107部队,广东 广州 510500; 3. 空军工程大学 航空航天工程学院,陕西 西安 710038

English Abstract

Effect of laser pulse number and repetition frequency on nanosecond laser propulsion

1. School of Information and Navigation,Air Force Engineering University,Xi'an 710077,China; 2. Army 95107 of PLA,Guangzhou 510500,China; 3. School of Aeronautics and Astronatics Engineering,Xi'an 710038,China

全文HTML

目录

1. 空军工程大学信息与导航学院,陕西西安 710077;

2. 中国人民解放军 95107部队,广东广州 510500;

3. 空军工程大学航空航天工程学院,陕西西安 710038

1. School of Information and Navigation,Air Force Engineering University,Xi'an 710077,China;

2. Army 95107 of PLA,Guangzhou 510500,China;

3. School of Aeronautics and Astronatics Engineering,Xi'an 710038,China