多平面升力体外形设计与气动/隐身性能研究  

Configuration Design and Aerodynamic and Stealth Characteristics Research of Multi-planar Lift-body Vehicle

作　　者：薛普 杨依峰 王锁柱 苏伟[1] 甄华萍[1] Xue Pu;Yang Yi-feng;Wang Suo-zhu;Su Wei;Zhen Hua-ping(Beijing Institute of Space Long March Vehicle,Beijing,100076)

机构地区：[1]北京航天长征飞行器研究所

出　　处：《导弹与航天运载技术》2019年第5期27-32,共6页Missiles and Space Vehicles

摘　　要：基于乘波体(Waverider Vehicle,WRV)外形利用多平面设计方法生成了一种多平面升力体(Multi-planar Lift-body Vehicle,MLV),针对乘波体和多平面升力体利用仿真方法开展了气动/隐身性能研究。基于层流方程的数值计算发现与乘波体相比,多平面升力体最大升阻比减小10%,最大升阻比减小量较小;纵向焦心和航向压心相对前移,质心系数取0.55时,纵向静稳定裕度较小,小攻角时需进行静不稳定控制,航向静稳定裕度较大,侧滑角未对升阻比和纵/航向静稳定特性产生明显影响。基于物理光学法(Physical Optics,PO)的雷达散射截面(Radar Cross Section,RCS)仿真计算发现多平面升力体可以实现RCS的整体减缩,在俯仰角60~120°,偏航角-10~10°范围内RCS较大,飞行过程中可通过姿态控制避开此区域。研究结果表明:多平面方法生成的多平面升力体具有较好的气动和隐身性能。A kind of Multi-planar Lift-body Vehicle(MLV) has been generated based on a Wave rider Vehicle(WRV) by utilizing multi-planar design method, while the aerodynamic and stealth characteristics have been researched and compared with the WRV by simulation method. The aerodynamic simulation based on Laminar equations shows that comparing with the WRV, the maximum lift-drag ratio of MLV is decreased by a small value of 10%. The longitudinal and lateral pressure center move forward, and the longitudinal stability margin is small when the mass center coefficient is 0.55, which needs static instability control under small angle of attack condition. The lateral stability margin is large, and the sideslip has little influence on the lift-drag ratio and the longitudinal and lateral stability margin. The Radar Cross Section(RCS) simulation based on physical optics(PO) shows that the MLV can reduce the RCS level, which is larger when pitching angle between 60 to 120 degrees and yawing angle between-10 to 10 degrees, which can be avoided by attitude control. In conclusion, the MLV designed by the multi-planar design method has good aerodynamic and stealth characteristics.

关 键 词：多平面升力体 乘波体 气动特性 雷达散射截面 

分 类 号：V218[航空宇航科学与技术—航空宇航推进理论与工程]