基于双级二次流射流的流体推力矢量偏转控制  

Fluidic Thrust Vector Deflection Control Based on Two-stage Secondary Flow Jet

作　　者：张鉴予 杜海 范嘉康 王天宇 王可心 李婧 胡佳玉 ZHANG Jianyu;DU Hai;FAN Jiakang;WANG Tianyu;WANG Kexin;LI Jing;HU Jiayu(Xihua Honor College,Xihua University,Chengdu 610039 China;Key Laboratory of Fluid and Power Machinery of Ministry of Education,Xihua University,Chengdu 610039 China;School of Aeronautics and Astronautics,Xihua University,Chengdu 610039 China;School of Electrical Engineering and Electronic Information,Xihua University,Chengdu 610039 China)

机构地区：[1]西华大学西华学院,四川成都610039 [2]西华大学流体及动力机械教育部重点实验室,四川成都610039 [3]西华大学航空航天学院,四川成都610039 [4]西华大学电气与电子信息学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2023年第6期43-50,67,共9页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金项目(51806181);翼型、叶栅空气动力学重点实验室基金项目(614220121030205)。

摘　　要：为了在单级射流流体推力矢量控制基础上获得更大的流体矢量偏转角,提出一种基于双级二次流射流的流体式推力矢量喷管,利用双级二次流造成的压强差使主流在第一次偏转的基础上再次发生偏转。采用CFD仿真确定模型二次流管道开口大小及入射角度,通过仿真、烟流显示及测压实验分析单级二次流射流、双级二次流射流控制状态下主流矢量偏转对应的流动控制机制,并通过后期处理得到流动控制规律。结果表明:通过双级二次流作用可以使主流产生两次偏转,从而显著增大主流矢量偏转角度;当两级二次流控制缝输出流量与主流体积流量比均为0.021时,可以获得12.5°的最大向上主流矢量偏转角。A two-stage secondary-flow jet-based fluidic thrust vectoring nozzle is developed to achieve a greater fluidic vector deflection angle based on the single-stage jet fluidic thrust vector control.The principle is to deflect the primary flow once more following the initial deflection,demonstrating the“relay”effect,with the pressure differential created by the two-stage secondary flow.In this study,computational fluid dynamics(CFD)simulation was applied to determine the size of the secondary flow passage opening and the angle of incidence.Under the control of single-stage and two-stage secondary flow jets,the flow control mechanism corresponding to the primary flow vector deflection was investigated through simulation,smoke flow visualization,and pressure measurement experiments.The results reveal that the two-stage secondary flow can cause the primary flow to deflect twice,significantly increasing the primary flow vector’s deflection angle. The maximum primary flow upward vector deflection angle of 12.5° can be produced when the ratio of the output flow of the two-stage secondary flow control slot to the primary flow volume flow is 0.021.

关 键 词：流体推力矢量控制 喷管设计 风洞实验 偏转控制 烟流显示 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]