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Experimental investigations on the application of lift enhancement devices to forward-swept aircraft model

Published online by Cambridge University Press:  03 February 2016

W. Zhang ,
J. J. Wang  and
Z. Wu
W. Zhang
Affiliation:
Fluid Mechanics Institute, Beijing University of Aeronautics and Astronautics, BUAA, Beijing, China
J. J. Wang
Affiliation:
Fluid Mechanics Institute, Beijing University of Aeronautics and Astronautics, BUAA, Beijing, China
Z. Wu
Affiliation:
Aircraft Design Institute, Beijing University of Aeronautics and Astronautics, BUAA, Beijing, China
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Abstract

The force measurements were conducted in low speed wind tunnel to investigate the effects of the scale, shape and the installation type of Gurney flap on a forward-swept aircraft model. The results indicated that both rectangular and triangular Gurney flaps can enhance the lift coefficient of the model tested, but with a little decrease of stall angle from 38° to 36°. The lift and drag coefficients increased with the Gurney flap scales. Meanwhile, the triangular Gurney flap can improve the aerodynamic performance more effectively when its high side is located near the wing root than the reverse installation with the low side near the wing root and the high side near the wing tip. Additionally, for the same Gurney flap, the model with smaller forward-swept angle can generate higher lift-enhancement in comparison with the larger forward-swept angle model.

Type
Research Article
Information
The Aeronautical Journal , Volume 110 , Issue 1108 , June 2006 , pp. 361 - 367
Copyright
Copyright © Royal Aeronautical Society 2006 

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