The Kuyper-Delta-First spaceship (See : my post of November 24, 2018 "Kuyper-Delta First : The Launch") has a spinning habitable wheel that simulates Earth-like gravity condition for the crew living in it. The bow side of the spaceship is upwards of the picture; its stern side is downwards. The spinning wheel has 2 millimeter-wave antennas (yellow hexagon on each opposite side of the wheel's rim) that provide : 1-millimeter-wave vision, 2-telecommunication, 3-collision avoidance by wave-echo effects (Radar). Near the hub of the spinning wheel, there is a static/spinning duo of wheels that provides air-pressure safe access to astronauts between the spinning living quarters and the static corridor tube that runs along the axis of the spaceship, from its bow to its stern. I am not explaining how an astronaut will cross from the spinning part towards the static part, without the use of a spacesuit. Within that tube, the astronauts are floating, like those of the Earth space station, now. Tools : Poser 5, paint.net, LibreOffice