Old 10-01-2018, 10:23 PM
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Join Date: Jul 2008
Location: Cheshire, UK
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It good to experiment but I am not sure the test was really rigorous enough to confirm that the sharp edged aerofoil was actually better.
For instance are you sure the fact that one flew straight and the other didn't was not due to small differences in the wings?
A sharp edged wing is indeed likely to create less drag than a conventional one when it is generating no lift but the drag will rise more rapidly than the conventional one when it is set at an angle to the airflow necessary to generate lift.
Just keep experimenting!
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