Very often I am asked to build something, the purpose of which is a mystery to me. Model making is sometimes about recreating shapes and size to a specific plan without any further explanation. These models fall into that category.
We were asked to recreate these shapes by Ball Aerospace so I assume they represent items that are shot into space. It looks like they hold electronics and possibly lenses but I am not sure. I don’t ask and they don’t tell and as long as they are happy with the models I am happy to keep supplying them.