2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/127251We critically review our recent claims that it is possible to obtain a propellantless propulsion device similar to electrodynamic tethers by means of a closed wire partially shielded by a superconductor from the outer magnetic field. We find that such a device is not possible as it violates basic physical laws. Furthermore, we show what is the correct local picture for the currents distribution within the superconductor.5 pages, 2 figuresSpace Physicstext