How can i project the curves in Top and Side surfaces ? and Which command for used it ?

Attach some pictures of what you have and/or what you're trying to do please.

Thanks

Sir, i have attached the sample image for this curve projection. please solve the problem.

Well, it's difficult... one because I don't know what you're actually trying to achieve here and two, because I don't know the relationship of the geometry to the surface.

The 'top' side geometry is simple because we know where it is projecting to (or at least we can assume). Therefor 'project' with a 'vector' and 'equal arc length' options work. They also work because the surface is large enough to project to.

With the side surface, I can get a projection, but only after making a copy with 'enlarge' set to ~25%. I don't have an origin for the geometry but since the top of the arc seems to coincide with that projected on the surface, I used it. The vector set to Y+, this works but only with the enlarged surface as shown.

Are you trying to check that the result matches defining geometry?

Thank you so much for answering to my question, You was trying to get the some result is correct that means " top side " is OK for this projection (using vector and equal arc length ).

But still now I did't get side wall projection. Here i attached image for top and side projection for the same design but using IDEAS software is result done.

I need to get that same result for using NX. Please suggest to me which command or option using is done.