一种小型全轴摆动喷管流场计算和性能分析  

Flow Field Calculation and Performance Analysis of a Small Axisymmetric Swing Nozzle

作　　者：尚永腾 白涛涛[1] SHANG Yongteng;BAI Taotao(China Airborne Missile Academy,Henan Luoyang 471009,China)

机构地区：[1]中国空空导弹研究院

出　　处：《弹箭与制导学报》2019年第4期1-4,8,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：航空基金(20180112001);中国空空导弹研究院科技创新基金(201604S06)资助

摘　　要：对一种长尾管式的小型全轴摆动喷管进行流场和性能分析,采用CFD三维流场仿真方法,完成了一系列不同工况的数值计算。结果表明:摆动喷管整体流场均匀,基本不受摆动的影响,分离线附近存在局部高压和低速涡流,其与压强、通喉比和工作介质相关;摆动喷管推力损失小、致偏效率高、线性度好,摆动时的内流场负载不高而摩擦力较大。验证了摆动喷管具有良好的流场均匀性和明显的性能优势,并提出了降低摆动力矩的措施。In order to analyze the flow field and performance of a small long-tail axisymmetric swing nozzle,A series of different conditions were calculated by 3-D CFD simulation method.The results show that the swing nozzle has a uniform flow field that nearly invariable with different angle.There are high local pressure and low velocity vortex near the split line which are related to pressure,channel-throat ratio and working medium.The swing nozzle has low thrust lost,high deflecting efficiency and good linearity and the swing brings small inner flow load and great fiction force.The good flow field uniformity and better performance of the swing nozzle is verified and measures to reduce shaking moment are proposed.

关 键 词：全轴摆动喷管 流场计算 推力偏角 摆动力矩 性能分析 

分 类 号：V430[航空宇航科学与技术—航空宇航推进理论与工程] TJ760.2[兵器科学与技术—武器系统与运用工程]