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Numerical and experimental validation of a morphed wing geometry using Price-Païdoussis wind-tunnel testing*

Part of: Smart Aircraft

Published online by Cambridge University Press:  18 May 2016

A. Koreanschi ,
O. Sugar-Gabor  and
R.M. Botez
A. Koreanschi
Affiliation:
Laboratory of Applied Research in Active Controls, Avionics and AeroServoElasticity LARCASE, École de technologie supérieure ETS, University of Quebec, Montreal, Quebec, Canada
O. Sugar-Gabor
Affiliation:
Laboratory of Applied Research in Active Controls, Avionics and AeroServoElasticity LARCASE, École de technologie supérieure ETS, University of Quebec, Montreal, Quebec, Canada
R.M. Botez*
Affiliation:
Laboratory of Applied Research in Active Controls, Avionics and AeroServoElasticity LARCASE, École de technologie supérieure ETS, University of Quebec, Montreal, Quebec, Canada
*
[email protected]
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Abstract

An experimental validation of an optimised wing geometry in the Price-Païdoussis subsonic wind tunnel is presented. Two wing models were manufactured using optimised glass fibre composite and tested at three speeds and various angle-of-attack. These wing models were constructed based on the original aerofoil shape of the ATR 42 aircraft and an optimised version of the same aerofoil for a flight condition of Mach number equal to 0.1 and angle-of-attack of 0°. The aerofoil's optimisation was realised using an ‘in-house’ genetic algorithm coupled with a cubic spline reconstruction routine, and was analysed using XFoil aerodynamic solver. The optimisation was concentrated on improving the laminar flow on the upper surface of the wing, between 10% and 70% of the chord. XFoil-predicted pressure distributions were compared with experimental data obtained in the wind tunnel. The transition position was estimated from the experimental pressure data using a second derivative methodology and was compared with the transition predicted by XFoil code. The results have shown the agreement between numerical and experimental data. The wind-tunnel tests have shown that the improvement of the laminar flow of the optimised wing is higher than the value predicted numerically.

Keywords

AerodynamicsXFoiltransition flowmorphing wingwind-tunnel testsgenetic algorithmsoptimisation
Type
Research Article
Information
The Aeronautical Journal , Volume 120 , Issue 1227 , May 2016 , pp. 757 - 795
Copyright
Copyright © Royal Aeronautical Society 2016 

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Footnotes

*

The authors' names were originally presented in the wrong order. A notice detailing this has been published and the error rectified in the online PDF and HTML copies.

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