What I'm looking for is optimum high speed wing tip shape with a plane I can safely land.

Is it really that much of a drag reduction advantage to make the wing razor sharp at the wing tip vs just leaving it cut straight off with a 1/2" thick airfoil. The attached image is the Wing planform. Sorry I don't have a better photo of the wing tip.

If the there is sizeable drag reduction in the trade off, it would be worth it. If I'm knocking off 2 MPH at 200mph, I'd rather opt for the nice handling thicker wing tip.


So how important is it to have a thinner over all wing in terms of pressure drag.

How much will drag increase with thickness of an airfoil. Lets say plane "A" has a mean thickness is 1" vs Plane "B" with an average 1.25" thick. Both planes are 36" span, 36" root.

Actually what we are talking about here is pressure drag. Is it really worth trying to get the thinnest wing possible. I guess what I asking is, Is it more the smooth airfoil that's going to make the difference in overall speed or is it actually how thick the pressure drag that predetermines how much drag is created?

Thanks to all who have answered!

Blue Skyy