抛物形吸气式脉冲爆震激光推力器性能预示的解析模型  

An Analytical Model of Performance Prediction for Pulsed Detonation Laser Thruster with Airbreathing Mode

作　　者：李小康[1] 张育林[1] 程谋森[1] 鄢昌渝[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《宇航学报》2010年第3期798-802,共5页Journal of Astronautics

摘　　要：考虑激光束、推力器构型以及大气环境三方面因素,建立了抛物形吸气式脉冲爆震激光推力器性能预示的解析计算模型。其中,将推力室内的流场发展过程分为吸收波和冲击波衰减两个阶段,应用Sedov点爆炸理论,以等效锥形约束空间,引入单一的修正因子以反映流场的不均匀性。计算表明,其结果同现有实验数据吻合。Focusing on performance,the typical parabolic laser thruster was calculated,and the characteristics of laser beam,configuration of the thruster and the state of atmosphere were considered. An operation cycle was divided into two phases：the phase of laser-supported absorption wave and the phase of blast wave. By using an effective conical space and the theory of point explosion,an analytical model was obtained. Simulations showed that results from the model coincided well with the available experimental data.

关 键 词：解析模型 吸气式 激光推进 冲量耦合系数 

分 类 号：V439[航空宇航科学与技术—航空宇航推进理论与工程] TN249[电子电信—物理电子学]