I want it to be Based on a ww2 bomb and the dimensions to be able to fit on a 8.5 by 11 inch piece of paper or have a version that is tiled and the main bomb part to be 8 inches and have a diameter of a few inches if you can’t find any ww2 bomb template
Attached is a paper template for this part of the bomb, then you would just need to cut out the fin bits (simple rectangles/triangles). Scale the output to match how big you want your bomb and there you go. Just don't include the glue tabs (as they wouldn't be needed) and do beveling as needed. if you want the parts in a different cutout path, you can cut out the individual shapes and reconnect them in what ever order is best for your needs.
I used blender for this with the paper export module/code.