【摘要】 采用CFD方法研究运输机上翘后体的侧鳍减阻技术。研究了侧鳍安装角、长度及厚度等几何参数对减阻效果的影响,探索了侧鳍减阻的流动机理。研究结果表明:侧鳍通过对上翘后体流动的疏导与整流作用显著减小了机身阻力。同时,给出了侧鳍几何参数的影响规律和设计原则。更多还原

【Abstract】 Drag reduction technique of afterbody strakes for cargo-transport aircraft was studied by CFD in this paper.The flow mechanism of drag reduction was investigated by the drag reduction effect of the setting angle,length and thickness of strakes.The results show that afterbody strakes can make the fuselage drag decrease observably by fairing the flow of upswept afterbody.In addition,the influence law and design principle of geometry parameters of strakes were put forward.更多还原