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Old 04-21-2012, 07:46 PM
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Nodd
 
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Default RE: Scratch Designed/Built Sailplane

I got 90% of the v-tail done today, SWEET!

I decided to do things properly & use a symmetrical airfoil for the tail feathers. Flat stabs tend to stall sooner than those with an airfoil... stalling = bad. I printed a set of tail ribs & contact cemented them to the wood...



Used my scroll saw to rough-cut the ribs...



Finished up the rib shapes with a sanding block...



The notch in the ribs is to accommodate some carbon fiber reinforcing. I glued a small CF tube to the center spar, it should make the tail nice & rigid...



The root of the v-tail is made from some fairly dense 3/8" balsa, carved to the airfoil shape. It should give a nice solid foundation for the tail & hopefully make mounting everything to the tail boom a snap...



Looks like something that belongs on a jet... fun fun. I still need to add the strengthening gussets & do some sanding. Will pick that up tomorrow...