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A comprehensive numerical study of battle damage and repairs upon the aerodynamic characteristics of an aerofoil

Published online by Cambridge University Press:  03 February 2016

M. Saeedi ,
F. Ajalli  and
M. Mani
M. Saeedi
Affiliation:
[email protected]
F. Ajalli
Affiliation:
Aerospace Research Institute, Tehran, Iran
M. Mani
Affiliation:
Aerospace Engineering Department, Centre of Excellence in Computational Aerospace, Amirkabir University of Technology, Tehran, Iran
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Abstract

A NACA 641-412 aerofoil with circle and star damage and also three repair configurations has been numerically investigated. Two different methods of mesh generation were employed: multi structured mesh for the star damaged aerofoil and unstructured mesh for the other aerofoils. The results show that the damage will cause a reduction in lift coefficient of the aerofoil and also a different stall angle relative to that of the undamaged aerofoil. Each kind of repair improves the aerodynamic characteristics of the aerofoil considerably. The flow Field inside the damage hole and the cavity caused by the repair sheets was also investigated. Finally, the numerical solution was qualitatively and quantitatively validated using the available experimental results.

Type
Research Article
Information
The Aeronautical Journal , Volume 114 , Issue 1158 , August 2010 , pp. 469 - 484
Copyright
Copyright © Royal Aeronautical Society 2010 

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