This is part of a tile set that I made in Blender, its a radar/radio dish in a bunker, everything is treed with gaming and animation in mind and if you open it in blender you will be able to animate each segment easily, the parent pivots for the dish are labelled.

I'm including reverse animation for the whole thing and the dish for those that don't want to have to animate anything, I've tested in Unity but not anything else except reimporting into blender.