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Old 08-12-2017, 11:48 AM   #8 (permalink)
Old Tele man
...beats walking...
 
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Yep, you want to 'trick' the airflow into abruptly horizontally-separating from the surface rather than 'clinging' to the the rounded surface as similarly happens at airfoil wingtips not having winglets.
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Last edited by Old Tele man; 08-12-2017 at 04:40 PM..
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