民机先进翼尖装置气动特性对比研究  

Research on aerodynamic properties of advanced wingtip devices for civil transport aircraft

作　　者：龚志斌[1] 杨士普[2] 张辉[1] 李杰[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072 [2]中国商用飞机有限责任公司上海飞机设计研究院,上海200235

出　　处：《飞行力学》2011年第5期27-30,共4页Flight Dynamics

基　　金：国家自然科学基金资助(10772148)

摘　　要：在民机上加装翼尖装置能够有效减小诱导阻力,提高巡航效率。采用计算流体力学方法,针对上反小翼、鲨鱼鳍和阶梯式三种先进翼尖装置进行了气动特性研究。对高、低速情形下诱导阻力、俯仰力矩和翼根弯矩进行了分析比较,所得结果可为民机翼尖装置的综合评估与选择提供一定参考。Wingtip devices are designed for reducing the induced drag and thus improving aircraft efficiency.CFD methods are employed to analyze the aerodynamic properties of three advanced wingtip devices which are upward winglet,shark fin and stepped wingtip device.This paper compares the three wingtip devices on many aspects,such as induced drag,pitching moment as well as wing root bending moment.The work is useful for the wingtip device assessment and selection.

关 键 词：上反小翼 鲨鱼鳍 阶梯式小翼装置 诱导阻力 俯仰力矩 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]