Effects of single pulse energy on impulse coupling coefficient in air-breathing laser propulsion

wen ming; ye jifei; hong yanji; dou jianhui

Volume 21 Issue 05

May 2009

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Article Navigation > High Power Laser and Particle Beams > 2009 > 21(05): 0-

guo linhui, gao songxin, wu deyong, et al. Beam collimation of diode laser vertical stack[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

wen ming, ye jifei, hong yanji, et al. Effects of single pulse energy on impulse coupling coefficient in air-breathing laser propulsion[J]. High Power Laser and Particle Beams, 2009, 21.

guo linhui, gao songxin, wu deyong, et al. Beam collimation of diode laser vertical stack[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

wen ming, ye jifei, hong yanji, et al. Effects of single pulse energy on impulse coupling coefficient in air-breathing laser propulsion[J]. High Power Laser and Particle Beams, 2009, 21.

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Effects of single pulse energy on impulse coupling coefficient in air-breathing laser propulsion

1.
Department of Basic Theories,Academy of Equipment Command and Technology,Beijing 101416,China

Publish Date: 2009-05-15

Abstract

Abstract

A lens and a paraboloid nozzle were used to focus pulsed CO2 laser and generate impulse. Effects of single pulse energy on impulse coupling coefficient was studied with a highaccuracy compound pendulum and a light figure system. Extension range of pulse energy from 5 J to 70 J was obtained through adjusting working voltage of the laser and energy attenuation of silicon combinations in the experiment. In addition, schlieren photographs were taken by a nanosecond framed high speed camera at the pulse energy of 24 J. The results indicate that the impulse coupling coefficient kept constant when pulse energy ranged from 4 J to 9 J and from 32 J to 70 J respectively. From 9 J to 32 J, it changed between 6.5 and 21×10-5 N·s·J-1 following a linear increment. The schlieren photographs show tha
- laser propulsion,
- pulse energy,
- impulse coupling coefficient,
- compound pendulum,
- light figure

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