论文部分内容阅读
为了获得吸气式激光推进冲量耦合系数随聚焦方向的变化规律,针对抛物形喷管,采用光线追踪法求解辐射输运方程,通过与二维轴对称辐射流体动力学方程组联立,计算得到了3组单脉冲激光能量条件下不同聚焦方向对应的冲量耦合系数。计算结果表明:当聚焦方向在0°～135°范围内变化时,冲量耦合系数总体上呈下降趋势,而且激光能量较大时,这种趋势愈明显。
In order to obtain the variation law of the momentum coupling coefficient of aspirated laser propulsion with the focusing direction, the ray tracing method is used to solve the radiation transport equation for the parabolic nozzle. By combining with the two-dimensional axisymmetric radial hydrodynamics equations, Three impulse coupling coefficients corresponding to different focusing directions under single-pulse laser energy conditions were obtained. The calculated results show that when the focusing direction is changed from 0 ° to 135 °, the impulse coupling coefficient generally declines, and the more obvious when the laser energy is larger.