This is a wheel that is only propelled by the gyroscope's precessional force. It uses a simple gyroscope and radio control gear to control a servo that rotates the gyroscope left or right to give a motivational force to the wheel.
Now some people say there is a magic force in a gyroscope and that you can utilize this magic force as a reactionless force to propel spacecraft to incredible speeds. I say that is all Hogwarts. The gyro obeys the Newtonian laws of motion - no magic - these people are just spinning their wheels, need to get off welfare and get a real job and quit hoodwinking gullible people.