脉冲微波辐射推进数值模拟  

Numerical Simulation of Microwave Beaming Propulsion

作　　者：闫志勇[1] 毛根旺[1] 何洪庆[1] 陈茂林[1] 

机构地区：[1]西北工业大学航天学院,西安710072

出　　处：《弹箭与制导学报》2008年第6期155-158,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：介绍了脉冲微波辐射推进的基本工作原理。在数值模拟方面,采用前期点爆炸自模拟解与后期矢通量分裂格式相结合的方法,计算了固定的抛物面型反射面聚焦入射平行微波束击穿空气形成的高温等离子体流场及其对反射面产生的推动作用,求出了推力器的动量耦合系数。结果表明,当输入的微波能量为E=10J时,焦距为15mm的抛物面型推力器在单脉冲作用下所获得的最大推力超过97N,相应的动量耦合系数为Cm=482.8N/MW,这与相同情况下日本东京大学通过实验获得的结果基本吻合。The mechanism of microwave beamed energy propulsion was introduced. A method that combines the self-similarity for point explosion at the first stage and flux vector splitting scheme at the second stage was developed. Then, it was applied to calculation of the high temperature plasma flow field generated by the focused microwave beam as well as the momentum coupling coefficient. For the parabola-shaped model with focal length of, calculation results show that the maximal thrust for the thruster is over 97N, while the corresponding coupling coefficient Cm is about 482.8N/MW at 10J microwave power in the case of single pulse, which is basically in accordance with the experimental result in the University of Tokyo.

关 键 词：动量耦合系数 矢通量分裂 点爆炸 微波推进 数值模拟 

分 类 号：V43[航空宇航科学与技术—航空宇航推进理论与工程]