Chen Hao, Shi Lei, Ma Lihua, Peng Zhiming, Xu Zhiyan, Qiao Yiwei. Effect of laser pulse number and repetition frequency on nanosecond laser propulsion[J]. Infrared and Laser Engineering, 2013, 42(9): 2403-2408.
| Citation:
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Chen Hao, Shi Lei, Ma Lihua, Peng Zhiming, Xu Zhiyan, Qiao Yiwei. Effect of laser pulse number and repetition frequency on nanosecond laser propulsion[J]. Infrared and Laser Engineering, 2013, 42(9): 2403-2408.
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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
- Received Date: 2013-01-06
- Rev Recd Date:
2013-02-15
- Publish Date:
2013-09-25
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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.
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