摘要
分别采用涡流理论、面元—薄翼型和源—汇模型的组合建模方法建立了包括螺旋桨、涵道体和中心体模型在内的反扭矩系统气动特性分析程序,并分别以BellX-22涵道螺旋桨及Doak涵道螺旋桨系统为算例,计算和分析了轴流和斜流情况下、在不同前进比时,涵道螺旋桨系统的气动特性,并得到了涵道体内外表面压力分布规律。
Based on the vortex theory and thin airfoil method,an engineering-oriented method for the ducted-propeller anti-torque system was investigated,included the airfoil shaped ducted body,propeller and the central body modelling technology.With examples of Bell X-22 and a Doak full size ducted propeller model,the aerodynamic performance at any angle of attack and advance ratios were caculated,and also with the pressure distribution on the surface of the ducted body.
出处
《直升机技术》
2008年第3期35-40,共6页
Helicopter Technique
关键词
涵道
螺旋桨
气动
兰金体
涡流
源一汇
ducted
propeller
aerodynamics
rankie
vortex
source-sink
