The field generated by the drive is in the realm of 50 nanoteslas, and Earth’s geomagnetic field for example is in the microtesla range. I don’t think it really

The field generated by the drive is in the realm of 50 nanoteslas, and Earth’s geomagnetic field for example is in the microtesla range. I don’t think it really matters though, because the magnetic field around a planet redirects solar wind, and that alone would be enough to screw up this drive. In my opinion this is something you use for the interstellar leg of the journey, and you would avoid planets while the drive is on. That isn’t really a problem though, because other than a relatively short trip away from Earth, you’d be avoiding planets and building up momentum. To make this work, you’d be going at a hell of s clip relative to any other planets you’d come across, and you’d be a tiny mass to boot. You’d probably just sail on past, with a deviation in course, but not orbit or a 180. For any gravitational maneuver, you could rely on momentum and shut down the drive, restarting for the return leg.