Yes, typically they include circuitry/ICs for brushless motor controller to spin the thing, plus a few more "motor" controllers if they have active magnetics fo

Yes, typically they include circuitry/ICs for brushless motor controller to spin the thing, plus a few more "motor" controllers if they have active magnetics for bearings, or other reasons. This needs to all be redundant, or otherwise safe in the mission critical sense. Then they have batteries, and all the stuff that goes with connecting the two (power regulation, conditioning, etc) and alarms, etc.