多级电弧对MHD-Arc-Ramjet联合循环发动机性能的影响  

Effects of multi-stage arc on the performance of MHD-Arc-Ramjet combined cycle engine

作　　者：于达仁[1] 唐井峰[1] 鲍文[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《推进技术》2008年第6期759-763,共5页Journal of Propulsion Technology

基　　金：国家自然科学基金(50306003);国家"八六三"计划(2002AA722105);中国航天科技集团公司航天科技创新基金(CASC0303)

摘　　要：MHD-Arc-Ramjet联合循环发动机中电弧数目的增加会改变发动机的循环结构,影响发动机的性能。理论上分析了MHD-Arc-Ramjet联合循环发动机中电弧数目的增加对发动机单位推力的影响,讨论了电弧数目趋于无穷大时的发动机性能,定量给出了不同电弧数目下的发动机单位推力。结果表明,MHD-Arc-Ramjet联合循环发动机的单位推力随着电弧数目的增加而增加;当电弧数目趋于无穷大时,发动机单位推力存在最大值;增加电弧数目所获得的发动机单位推力的增益随着电弧数目的增加而不断减缓。The increase of the arc stage number of MHD-Arc-Ramjet combined cycle engine will cause the change of engine thermal cycle configurations and affect engine performance. The effect of the increase of the arc stage number on the engine specific thrust is theoretically analyzed. The specific thrust at the condition that the arc stage number approaches infinite is investigated. The specific thrust for the different arc stage number cases is provided. The results show that the engine specific thrust will increase with the arc stage number, that the maximum specific thrust will be produced when the are stage number approaches infinite, and that the increment of the specific thrust will diminish with the increase of the arc stage number.

关 键 词：MHD-Arc—Ramjet联合循环发动机 多级电弧 性能分析 AJAX 

分 类 号：V231.12[航空宇航科学与技术—航空宇航推进理论与工程]