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Old 02-01-2016, 03:47 PM
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MJD
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Originally Posted by skaliwag
The airfoil / span / root and tip cords on this "Birdie" are close to the Ace Tapered foam core.
Yeah, quite close. I get 16%.. chances are it's a NACA 2416. Not too thin is it.. oh well.

UPDATE: no it's not a NACA 2416, might be a Staedtler-Mars special based on one, dunno. I smoothed out the plans and looked more closely at the ribs - the lower surface has been flattened from the rear of the spar to the TE. Definitely more camber than it needs in this incarnation.

I can't see any use for a working rudder on this, but I might need the servo weight in the rear. The Simple 400 used to do fun things when I pulled the sticks to the bottom corners at full speed.
Last edited by MJD; 02-01-2016 at 08:31 PM.
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