The Von Braun space station structure will
consist of two concentric structural rings fixed together with a set of spokes
supporting a Habitation Ring made-up of large modules:
The Docking Hub (Inner Ring)
An un-pressurized ring structure with docking arms and stabilizers designed to capture and lock in place a visiting spacecraft to unload passengers and cargo. At first there will be one docking port, but later we will add another so that two craft can be docked to the station at the same time.
All passenger and cargo access to the station
will be through a set of pressurized access tubes connecting the Docking Hub to
the Outer Ring Truss.