Creo Parametric Community Challenge 2 - Isogrid on a Curved Surface

I, uh, need to stop this. But I had another idea for the radome and played around some more. This version also has uniform wall thickness, since the walls are made with sweeps. It also gave me some additional control, allowing me to change the pattern as it approached the nose, keeping the triangles from getting too squished together. I'm quite pleased with the pattern; I think it looks lovely. From above, it looks like a flower.

Part is made in Creo 9

I, uh, made two more. Yes, I have a lot of time on my hands at the moment. And it was fun to play around with this challenge. As I kept working I got new ideas!

This first one has horizontal ribs, and then a zigzag curve that gets patterned. The zigzag curve goes up and down between two planes, and by using a table pattern to each time move up the bottom plane each instance, the pattern gets inverted, creating the isogrid pattern. I'm quite satisfied with this solution, and the table pattern means you get a lot of control of exactly how the pattern looks. Each row can be moved individually. It did require a pretty low accuracy setting, and trying to round off the corners made it hugely computationally heavy, so I skipped that part. It does have quite a few geometry checks, but these are all for edges that get cut off by the solidify features, so I don't think they should cause downstream issues. I didn't do any "finishing" work at the tip of this one.

The second one is an easier part, since it's a simple cylinder. I read @iDZignit's comments about manufacturability and I wanted to see if I could make one that's easily millable. When I teach Creo, I always caution the students against the temptation to try and make as short a model tree as possible. This time I fell for that temptation myself, and my part consists of one revolve and a pattern of extrude features. The extrudes have a somewhat tricky sketch with some sketch relations that move the triangle up and down as it moves around the cylinder (necessary to keep the rows straight). The result is an isogrid consisting of straight extrudes with planar walls, simple radii and flat bottoms. Of course, that means the wall thickness varies, getting thinner towards the bottom, which might not be ideal, but it should be very simple to manufacture, which was my goal here. Make the triangles smaller in relation to the diameter and the problem should be smaller. Or just add a taper to the extrudes. You could also do the extrudes "up to surface" with an offset and you'd have a bottom that follows the cylinder curvature as well. But I kind of liked the very simple nature of this pattern.

Both parts made in Creo 7.

Hello fellow engineers! Unfortunately, I have missed this challenge. However, I still would like to share some of my work. This is not an aerospace problem (not a rocket science:) and I am sharing this to simply demonstrate how CREO helped me one day.

I once faced a similar problem with producing a grid, working for plastic roto-moulding facility that produces outdoor furniture. There was a challenging moment with making a tufted couch. I was really amazed how powerful is CREO with patterns. I attach pictures below. 

Simply wanted to share my case and say thanks to CREO team. Great product that allows one to create whatever he or she wants.