鸭翼位置对前掠翼气动特性的影响

本文依据在低速风洞所取得的测力、油流观察及旋涡测量结果,研究了前掠翼鸭式布局的鸭翼位置对气动性能的影响机理。研究表明,鸭翼位置对气动性能的影响是极为显著的。前掠翼鸭式布局大迎角性能的提高取决于鸭、主翼前缘涡的相对位置及其相互控制,也就是它们间的相互干扰。文中根据前掠及后掠鸭翼与主翼组合的实验结果,提出了采用鸭式布局时鸭、主翼应具有的平面形状及它们的相对位置。文中还对双前掠翼布局提出了一些看法。

THE EFFECT OF CANARD POSITION AERODYNAMIC CHARACTERISTICS OF FORWARD-SWEPT WING

Based on the results of aerodynamic forces measurement; oil visualization and vortex measurement from wind tunnel testing, the effect of canard position on the aerodynamic characteristics of canard-forward-swept wing configuration is investigated in this paper. The results show that the effects of canard position on the aerodynamic characteristics are much notable. The improvements of aerodynamic characteristics for canard-forward-swept wing configuration at high angles of attack depend on the relative location of wing nose vortex and canard nose vortex and their interaction, i. e. , the interference between these nose vortices. Having analyzed the experimental results, the authors propose the proper arrangements of the geometry of wing and canard and their relative position The double forward-swept wing configuration is also discussed.