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Old March 10th 16, 01:37 PM posted to rec.aviation.soaring
krasw
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Posts: 668
Default Aileron inboard edge sealing

There's an interesting paper on aileroin fences (etc.):

https://tu-dresden.de/die_tu_dresden.../140303_TS.pdf

Bottom line, pair of fences cost 0,25 points L/D.