highspeed
Well-Known Member
I am doing a design study of a delta-wing sportplane and one area I'm getting hung up on is the airfoil selection. I know that the delta planform is relatively insensitive to airfoil choice, but it still requires an airfoil with a positive pitching moment. I've managed to find a few positive Cm airfoils in some of the online databases but I'd like to play around with designing my own to see the effects of various camber positions and amounts, as well as variations in reflex. Camber is usually denoted as a percentage of chord, but how is reflex called out? Is there a method to generate arbitrary sections to test in Xflr5 to get a feel for the effects of changes?
