I would do it using Skeletal modeling:
1. Make your Wing Surface (or Solid).
2. Then set a WorkPlane where each rib will occur.
Note: One way to locate each rib is to make a Sketch with one straight line running the length of the wing and adding SketchPoints at each rib position.
3. Then attach a WorkPlane to each SketchPoint + Line.
4. Then make a 2d Sketch on each WorkPlane and ProjectCutEdges of the Wing to get a flat profile Sketch.
5. Then open a new SheetMetal Part file and Derive that Sketch part into it along with that one Sketch.
6. Then Extrude that profile.
Note: If you create a Parameter in the MasterSketch file for the thickness of these ribs, you can Derive that Parameter into the new SheetMetal part file and use it for the Thickness value.
7. Save that part and then SaveAs that part to a new name (same but with a sequential suffix?).
8. Then open the new part file and Edit the Deriveed component and bring in the next profile Sketch.
9. Then Redefine the the Extrude to that Sketch (or if that doesn't work, delete the existing Extrude and make a new one).
10. Then repeat until all ribs are made.
11. Then open a new Assembly and place all part files at the WorldOrigin.
Done.
... Chris
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