WIND-TUNNEL INVESTIGATION OF WING-IN-GROUND EFFECTS

被引：24

作者：

CHAWLA, MD

EDWARDS, LC

FRANKE, ME

机构：

[1] Wright Research and Development Center, Wright-Patterson Air Force Base, OH

[2] U.S. Army Safety Center, Fort Rucker, AL

[3] Air Force Institute of Technology, Wright-Patterson Air Force Base, OH

来源：

JOURNAL OF AIRCRAFT | 1990年 / 27卷 / 04期

关键词：

D O I：

10.2514/3.25270

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Wing-in-ground effects from a wind-tunnel study of a NACA 4415-profile wing model with an aspect ratio of 2.33 are described. The wing model contains a 20%-chord, full-span, adjustable flap and removable end and center plates. Ground boards are used in the wind tunnel to simulate the ground. In this study, the ground effects are expressed as variations to the aerodynamic coefficients (lift and drag) and lift-to-drag ratio. The ground effects are described in terms of angle of attack, flap angle, wing height above ground, and use and size of end and center plates. Ground effects were found to be limited to heights above the ground of one mean chord or less. © 1990 American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

引用

页码：289 / 293

页数：5

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