Numerical study on impulse coupling coefficients of conical nozzle and parabolic nozzle for laser propulsion

被引：0
|
作者：
Li Q. [1 ]
Cao Z. [1 ]
Jin X. [1 ]
机构：
[1] Academy of Equipment Command and Technology
来源：
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 10期
关键词：
Dimensionless factor; Impulse coupling coefficient; Laser propulsion; Nozzle configuration;
D O I：
10.3788/HPLPB20102210.2253
中图分类号：
学科分类号：
摘要：
A dimensionless factor of conical nozzle is defined combined with incident laser energy, energy deposit efficiency, ambient air pressure, generatrix length and semi-apex angle of nozzle, and it is extended to the study of parabolic nozzle. Effects on impulse coupling coefficients of conical and parabolic nozzles under four semi-apex angles are calculated by radiation gas-dynamics computational code. Results indicate that, there are the maximum impulse coupling coefficients of the two nozzles, and the corresponding dimensionless factor is about 0.4. Impulse coupling coefficient increases with the decrease of semi-apex angle at same dimensionless factor, and the impulse coupling coefficient of parabolic nozzle is greater than that of conical nozzle under the same conditions.
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页码：2253 / 2256
页数：3
相关论文
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