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This thread is privately moderated by VicT, who may elect to delete unwanted replies.
Jan 08, 2019, 07:59 AM
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Mini-HowTo

Segmented flaps for curved Night Radian wing


I really like the concept of the Radian: simple. However when its time to land you better be willing and able to force her down with tight turns and then nosing her into the grass, ground, sand, concrete, whatever. Hand catching is possible but the only way to slow her down is to get to near stall speed and risk the minor crash damage. Since most of my sailplanes and motorgliders have flaps or flaperons I decided to install my own flaps. Yes I have tried spoilers and they are better than nothing but with about the same time and effort flaps are better in my opinion.

What size? I recently installed some old Radian Pro wings that have flaps and ailerons but very little dihedral. They worked fine with AT6 Texan 636 receiver settings that were loaded in. However I felt that more flap area would be better so I increased the chord width of the flap. I put some yellow tape on the wing for a visual cue before making cut marks. I knew that because of the curved trailing edge I would not be able to have a continuous flap hinge but also knew that keeping the flaps short with a trailing edge connector link would work out OK.
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