A space based system to accelerate or de-accelerate a spacecraft in space, said system comprising: one or more sections of magnetic coils configured as a conduit with a flightpath therethrough for the spacecraft, said one or more sections of magnetic coils rotates in a circumference therein said conduit to generate a rotating space based electromagnetic vortex field therein said flightpath; a magnetic coil field generator electrically connected to said one or more sections of magnetic coils and configured to generate a space based magnetic field therein said flightpath; a power plant electrically connected to said magnetic coil field generator, said power plant configured to power said magnetic coil field generator; and one or more booster coils affixed to the spacecraft, said one or more booster coils configured to generate a rotating spacecraft based electromagnetic vortex field therearound the spacecraft to interact with said rotating space based electromagnetic vortex field.

Patent# 10,926,893 B2
https://pdfpiw.uspto.gov/.piw?Docid=10926893