Ernest

Jochen, Thanks for the reply, and thanks for the link to Airfoil Editor. After looking again at xflr5, it seems as if the two splines only enforce C0, but after you "store spline as Foil" and then repanel, at least C1 is enforced, which then modifies the original leading edge you create with the initial splines. Best

The splines seem to be broken into a top surface spline and bottom surface spline that don't enforce slope continuity at the leading edge? Is there a way to change that?

Is it possible to change AoA in mixed inverse design? It is set to 0 and grayed out