To quickly understand the operation of the design engine see a minute of the references of these videos;
We see how aluminum is completely efficient for propulsion with electricity!
In this direction the electrons accumulate first in the upper part of the tank, causing the matter to levitate. The escape route allows propulsion that could be enhanced with another device and feedback of the electrons with the environment.
The steel bar in the center will try to escape in the direction that the electric current runs, so it will produce a push effect.
This model is my own and I give permission for it to be used by virtue of experimentation and progress.
Note: The power of the engine will be exponential to the electrical power that is injected inside and at the pressure that can be applied.
A steel ring can rotate around the tank to exert more stability, orientation and favor the levitation of the engine.