失速(流体力学)
翼型
升力系数
攻角
旋涡升力
空气动力学
航空航天工程
Chord(对等)
气动中心
升阻比
Lift(数据挖掘)
流动分离
后缘
压力系数
前沿
翼
工程类
机械
结构工程
边界层
雷诺数
俯仰力矩
计算机科学
物理
湍流
分布式计算
数据挖掘
作者
Venkata Swamy Naidu Neigapula,Satya Prasad Maddula,V. Bhargava
出处
期刊:Aviation
[Vilnius Gediminas Technical University]
日期:2020-09-23
卷期号:24 (3): 123-136
被引量:7
标识
DOI:10.3846/aviation.2020.12815
摘要
Aerodynamic performance of aircraft wings vary with flight path conditions and depend on efficiency of high lift systems. In this work, a study on high lift devices and mechanisms that aim to increase maximum lift coefficient and reduce drag on commercial aircraft wings is discussed. Typically, such extensions are provided to main airfoil along span wise direction of wing and can increase lift coefficient by more than 100% during operation. Increasing the no of trailing edge flaps in chord wise direction could result in 100% increment in lift coefficient at a given angle of attack but leading edge slats improve lift by delaying the flow separation near stall angle of attack. Different combinations of trailing edge flaps used by Airbus, Boeing and McDonnel Douglas manufacturers are explained along with kinematic mechanisms to deploy them. The surface pressure distribution for 30P30N airfoil is evaluated using 2D vortex panel method and effects of chord wise boundary layer flow transitions on aerodynamic lift generation is discussed. The results showed better agreements with experiment data for high Reynolds number (9 million) flow conditions near stall angle of attack.
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