Title

Investigation of Chord Ratio, Stagger, Decalage Angle, and Flap Angle for Dual Wing Configurations

Abstract

Aerodynamical closely coupled dual wing configurations of unequal chords are investigated for medium speed general aviation applications. Vortex panel and momentum boundary layer analysis are utilized for the two-dimensional predictions. A multi-surface vortex lattice method is used for the three dimensional predictions. In the process of searching for the highest lift to drag ratio upper airfoil to lower airfoil chord ratios, both greater than and less than one, are investigated in terms of stagger, decalage angle, and gap. With the optimum chord ratio, at the optimum stagger and gap, proper spanwise decalage distribution is shown to yield the lowest two dimensional drag results. Various wing taper ratios and wing twists are investigated to increase wing efficiency. The dual wing configuration is shown to have significantly less drag and hence longer range than the conventional single wing configuration.

Meeting Name

24th Aerospace Sciences Meeting

Department(s)

Mechanical and Aerospace Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1986 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.


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