鸭翼边条翼布局俯仰非线性抑制研究  

Study of restraint of canard on non-linear pitchup of a strake-wing configuration

作　　者：龚翠翠[1] 张彬乾[1] 李沛峰[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《飞行力学》2010年第3期17-20,共4页Flight Dynamics

摘　　要：采用CFD方法,研究鸭翼抑制边条翼布局俯仰非线性上仰的可行性。研究结果表明,边条翼布局具有复杂的多涡系旋涡流动结构,而导致俯仰非线性的主要因素是主翼涡的破裂。鸭翼对边条翼翼身组合体俯仰非线性上仰具有很强的抑制作用;鸭翼负偏度可提高鸭翼对俯仰非线性上仰的抑制能力,在更大迎角范围内对俯仰非线性具有明显的减缓作用。The feasibility of restraining the non-linear pitchup of a strake-wing configuration was investigated by the CFD method.The results show that the strake-wing configuration is characterized by the complicated vortexes.However,the breaking down of the main wing vortex is main factor of the non-linear pitchup.The non-linear pitchup could be restrained well by the canard.While the canard deflects downward,the restraining effects are better,and the pitching characteristics are improved more at high angle of attack.

关 键 词：边条翼布局 鸭翼 俯仰特性 非线性上仰 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]