Modern nano drones can use ion engines for maneuvers.

The miniaturized magnetohydrodynamic drive can be an excellent propulsion system for nano drones.

What is the similarity between the fictional Cylon raider and the nano drone? The fictional Cylon raider has given inspiration for the ion engines that can use in the nano drones.

That thing is that both of those systems can use ion engines. Or sharper saying the water moving drone can use MHD (Magnetic Hydrodynamic Drive) for operating in liquid. All ion engines operate the same way. The propellant will ionize at the front of the magnetic accelerator. And then those ions will travel through that accelerator.

The thing is that the tracks at the wings of the fictional Cylon raider could be the ion engines that can use in underwater conditions. The system can pull water ions through those channels and then that thing makes those systems operate.

As I just wrote the small size of the nano drones is a problem for the engineers. It's hard to make moving parts for tiny machines that are smaller than blood cells. One of the solutions that can solve the problem with miniature propulsion is the small-size gauss accelerator or gauss track. The gauss-accelerator or gauss gun can turn to the MHD system very easily. The requirement is that the ions will travel through that track.

The system will pull ions at the front of the track and drive them backward. That system would be the miniaturized version of the MHD system (Magneto-Hydrodynamic Drive) where magnets are pulling water from the front of the magnetic accelerator. And then the system will just transport those ions backward.

https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive

Images: https://scitechdaily.com/tiny-microdrones-propelled-by-light-driven-nanomotors/

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