短舱外侧导流片对民用运输机低速特性影响  

Influence of outboard nacelle chine on the low-speed characteristics of civil transport aircraft

作　　者：王祁旻 郑隆乾 张美红 WANG Qimin;ZHENG Longqian;ZHANG Meihong(Shanghai Aircraft Design and Research Institute,Commercial Aircraft Corporation of China,Limited,Shanghai 201210,China)

机构地区：[1]中国商用飞机有限责任公司上海飞机设计研究院,上海201210

出　　处：《航空动力学报》2022年第1期142-151,共10页Journal of Aerospace Power

基　　金：国家重点研发计划(2020YFA0712000)。

摘　　要：以提升民用运输机起降构型大迎角阶段的气动性能为目的,通过开展基于求解雷诺平均NavierStockes(RANS)方程的数值模拟,研究了翼吊短舱布局飞机的失速附近的流场特征,分析了短舱外侧导流片的作用机理以及导流片的安装位置和安装角对流动控制效果的影响。短舱外侧导流片能够在大迎角工况下产生诱导涡,抑制外侧前缘缝翼放下后,在吊挂/短舱后主翼上翼面后缘出现的分离,能够达到提升全机最大升力系数的效果。短舱外侧导流片的安装位置会影响诱导涡的涡强以及涡在主翼上翼面的展向位置和高度,安装角主要影响诱导涡的涡强。在所研究的设计区间内,短舱外侧导流片能够提升全机最大升力系数约2.1%。For the purpose of improving the aerodynamic performance of the civil transport aircraft with the high-lift devices deployed at high angle of attack,the numerical simulation method of Reynolds average Navier-Stokes(RANS)turbulence model was used to analyze the stall characteristics of aircraft with the wing-mounted nacelle configuration. The mechanism of the outboard nacelle chine was investigated. Design exploration of the installation position and angle of the outboard nacelle chine was carried out. The vortex from the outboard slat and main wing aggravated the flow separation on the wing upper surface behind the nacelle/pylon. The vortex induced by designed outboard nacelle chine suppressed the flow separation, which increased the maximum lift coefficient. The installation position of the outboard nacelle chine affected the intensity, spanwise position and height of the induced vortex. The installation angle mainly affected the induced vortex intensity. The maximum lift coefficient increased by 2. 1% with the outboard nacelle chine.

关 键 词：短舱外侧导流片 增升装置 翼吊短舱布局 流动控制 最大升力系数 

分 类 号：V224.2[航空宇航科学与技术—飞行器设计]