Weightless environment in space is causing numerous deleterious effects on human health, complicating all human activities and material handling. For long-term stays in space it will be needed to achieve at least partial gravity conditions. It is necessary to generate artificial gravity and to design a kind of artificial gravity generators as a life support and habitation systems. Rotation is in the focus of all artificial-gravity research because centripetal acceleration generated by rotation can be substitute for gravity. A very effective way to spin an object in space is to use electrodynamic technologies based on Eddy-currents. Deep space is cold vacuum without gravity forces so it offers significant advantages. The aim is to obtain controlled rotation of habitat for generating gravity sensation by means of guidance and velocity control by a unified trajectory control system made of propulsion and steering subsystems. Employing superconducting electrodynamic technologies in space could result in development of a new critical technologies to enable human exploration missions and design of human habitats, achieving the old idea of a rotating wheel-shaped space station generating gravity sensation on its inside hull. 

     The idea of using rotation to create artificial gravity in space was introduced by Konstanin Tsiolkovsky in 1903. Hermann Oberth was the first to use the term space station for a wheel-shaped facility in 1923. By 1929, Hermann Noordung introduced concept of rotating wheel station and suggested it to be positioned in a geostationary orbit. Wernher von Braun and Willy Ley upgraded the idea in the 1950s, popularizing the concept of a spinning wheelshaped station to provide artificial one-third Earth gravity. In 1968 the film “2001: A Space Odyssey“ by Arthur C. Clarke and Stanley Kubrick described spin-generated artificial gravity aboard a space station and on a spaceship.

     The term "Maglev" refers to magnetic suspension in use for Maglev trains, wind generators, and bearings. In trains it is used to enable suspension only with support of electromagnetic fields counteracting the gravitational force. Linear induction motors are used for propulsion. The most distinguished Maglev train technologies are servostabilized. EMS developed in Germany and EDS systems developed in USA and Japan. EMS is based on attraction forces using conventional electromagnets while EDS is based on repulsive forces and use powerful SCMs. Although EMS energy consumption is lower, obtained gaps in EDS are much larger enabling their use in cirular paths. EMS is unstable needing active electronic stabilization while stable EDS does not need it. The superconducting Japanese EDS Maglev trains technology in which vehicle is suspended, guided, and propelled by magnetic forces and fields, is especially suitable to be optimized and applied in space offering possibilities for a very effective way to spin an object in space by contolled rotation.

     EDGG = electrodynamic gravity generator
     EDS = electrodynamic suspension
     EMS = electromagnetic suspension

     The EDGG system consist of the rotation generator, rotating module, docking module, rotating habitats, columns, energy supply system, and command & control system, as shown. The main part of the EDGG is the electrodynamic rotation generator made of the unified propulsion & guidance subsystem that consists of rotation generator and rotating module. Rotation generator and rotating module generate travelling electromagnetic fields which spin the rotating module that transmits generated rotation to a rotating habitats on which inside hulls is to be generated general gravity sensation.

 Initial design concept of radial thrust EDGG

        1 – Rotating module. 2 – Docking port. 3 – Column (transfer tunnel) 4 – Rotating habitat module. 

      5 – Solar array. 6 – Secondary docking port. 7 – Rotation generator. 8 – Counter-rotating module