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Optimal wing twist distribution for roll control of MAVs

Published online by Cambridge University Press:  27 January 2016

M. R. Ahmed ,
M. M. Abdelrahman ,
G. M. ElBayoumi  and
M. M. ElNomrossy
M. R. Ahmed*
Affiliation:
Aerospace Engineering Department, Cairo University, Giza, Egypt
M. M. ElNomrossy*
Affiliation:
Production, Energy and Automatic Control Department, French University, Cairo, Egypt
*
[email protected]
[email protected]
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Abstract

The aerodynamic design optimisation of a Micro Air Vehicle (MAV) wing is performed to obtain the optimal anti-symmetric wing twist distribution for the roll control of the MAV’s wing instead of using conventional ailerons. This twist distribution should produce minimum induced drag and achieve a better roll response. The implementation of several anti-symmetric load distributions such as the half lemniscates and the Horten distributions is studied leading to an initial solution for the optimal distribution that could achieve better roll requirements. Multhopp’s method based on Prandtl’s classical lifting line theory is used for the determination of the spanwise load distribution required during the optimisation process. The optimisation process is based on the modified feasible directions gradient based optimisation algorithm implemented in the optimisation system, VisualDOC, given by Dr. Garret Vanderplaats. The proposed optimisation process is applied to the ‘BARQ’developed MAV which has successful flight in July 2009.

Type
Research Article
Information
The Aeronautical Journal , Volume 115 , Issue 1172 , October 2011 , pp. 641 - 649
Copyright
Copyright © Royal Aeronautical Society 2011 

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