Patrol aileron profile

[Chewie]

Do the Patrol ailerons need to have a curved top surface?

I made my aileron ribs off the mylar profile, same as the flap ribs, but a smart person brought to my attention that the drawing for the rib shows a slight curve along the top of the rib. The extra camber is not called out, and I didn't really see it until I laid a straightedge on the drawing. The flap ribs are drawn pretty straight across the top.

Smart Person also informed me that this was the subject of a discussion some time ago, perhaps before my time on the Yahoo group.

As of now, I have the set of aileron ribs completed, with nearly-straight sides per the mylar. Happy to ask Bob and let you know what he says but thought I'd check here first.

Thanks!

[Chris In Milwaukee]

Mine are also "to the mylar". It may have a slightly curved surface, but mine look pretty flat up close.

https://bearhawkforums.com/forum/bearhawk-patrol-plans-build/21676-fluting-party?p=21820#post21820

I suspect, even though it looks flat, that the curve will be carried through when it's covered. Being a turbulent airfoil, I'm not sure it matters so much by the time it gets back that far anyway.

~Chris

[Bdflies]

With covering, rib stitches and tapes, it's kinda hard to be real exact, but mine appear to be dead flat.

Bill

[Chewie]

Thanks for the observations! I'll hang on to these ribs unless someone comes along with a compelling case to make them curved.