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Old Feb 29, 2004, 01:52 AM
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Singapore
Joined Aug 2002
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Airfoil section for swept wings

I am thinking of building a swept back flying wing sailplane. There are many designs on the web which give you a planform and then specify the wing section, dihedral and washout. Is the airfoil section specified in the direction of the airflow or is it perpendicular to the wing's quarter chord line? How do the wings perform compared to the conventional sailplanes?

Thanks

Shane
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