How to properly smooth edge What is a proper way to make edge (marked with marker) seamless in a situation below. I can't bevel it, also bevel modifier does nothing. Tried cutting it and bridging it back together. Removed doubles, recalculated normals... Running out of ideas... I could theoretically make one big face, but once converted to triangles in game engine it looks broken.

EDIT: So as requested more informations. I am modeling a 3d model of a glider plane. I need to create a seamless transition of object 2 on object 1(Old pictures were cutout of that section). Basicly i must smooth out edge marked with yellow color (all around the profile) so it would be like one part with fuselage. One the picture below is a look from a real plane i am trying to achieve. 

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So as your demand has changed, here is a proposition for your plane wing, tell me if it's ok: