trajpar

I will attempt to help - by an example model based on what you submitted (Creo 2.0, M230):

I am sure there are other, most likely better ways of doing this, but please open the file and try to follow along with my "method":

If you want to pattern the "bulge stripes" along the wing, your sweep trajectories have to follow the boundary blend that describes the underlying shape.  One way to do that is to use an intersect curves generated by a plane offset from the edge of the wing.  In the pattern instances, that offset distance will vary.

Also, I make use of sweep guide "chains" that carry with them the tangency information.

I am not sure actually what you want to do with the "WAVE" graph, but I put into the sweep a variance based on a graph.  In my opinion, using the cosine function makes it rather convoluted how the amplitude of the "bulge" varies; still it illustrates how it bulges more at the leading edge, then disappears, then another bump as the bulge makes its way towards the trailing edge.

Like I said - this example is for illustration, and it needs a lot more work.  For example, you will notice that the bulge stripes are matched at the seams, but not all the way from the leading/trailing edges of the wing!  Perhaps that could be solved by having the sweep do a nearly "full loop", then trimming and re-attaching a relatively simple trailing edge...  Anyway, this is a fun exercise, I'll spend a bit more time with it on the weekend and I wish you good luck!