I designed a magnetic propeller, which is in https://vixra.org/abs/2102.0146
It does not use fuel and rocket. It generate propellant force by magnetic force (Lorenz force). It will send people to Mars and even further.

On the most abstract level (I have little interest in specific setups tbh) I can tell you for a fact that electromagnetism locally conserves energy-momentum, just like any other interaction in nature:

\[\triangledown \cdot T_{(EM)} =0\]

As such, it is not possible to get “free energy” from a magnetic field on fundamental grounds, irrespective of how the apparatus functions in detail. At the very least you would need to invest the same amount of energy as you need to propel the spacecraft, into making the magnets in the first place.

Edited February 28, 20214 yr by Markus Hanke

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Seeing as this is apparently proposing perpetual motion, I’m just going to close it.