The Effect of Gurney Flaps on Three-Dimensional Wings with and without Taper Wichita State Univ

Format:

Conference/Event

Author/Creator:

Myose, Roy, author.

Conference Name:

World Aviation Congress & Exposition (1996-10-22 : Los Angeles, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1996

Summary:

The effect of Gurney flaps on three-dimensional wings was investigated in the 7x10 feet low speed wind tunnel. There have been a number of studies on Gurney flaps in recent years. However, these studies have been limited to two-dimensional airfoils. A comprehensive investigation on the effect of Gurney flaps for a wide range of configurations and test conditions was conducted at Wichita State University. In this part of the investigation, straight and tapered three-dimensional wings with Natural Laminar Flow (NLF) airfoil sections were tested. Gurney flaps spanning 4.5, 3.0, and 1.5 feet were tested on a straight NLF wing of 5 feet span. Compared to the clean wing, the 4.5 feet span 0.017c and 0.033c height Gurney flaps increased the maximum lift coefficient by 17% and 22%, respectively. The increase in maximum lift coefficient was proportionately smaller with the shorter span Gurney flaps. Changing the spanwise position from outboard to inboard resulted in a small improvement in performance. Improvements in the maximum lift coefficient were also obtained using Gurney flaps on the tapered NLF wing

Notes:

Vendor supplied data

Publisher Number:

965514

Access Restriction:

Restricted for use by site license