ELECTRIC PROPULSION MOTORS
Purpose and Application: Superconducting solenoidal coils serve as field coils in homopolar motors that can produce more torque and horsepower for their weight, while also running potentially quieter than any other motor. Being considered for quiet submarine electric drive.
Example: A 3000 HP homopolar motor that used superconducting field coils is shown being tested at the Naval Surface Warfare Center in Annapolis Maryland to assess the performance in quite ship electric drive applications is shown below. A concept for a larger, more advanced superconducting homopolar motor designed by the Naval Surface Warfare Center, Annapolis is is also shown. In the figure, the designation "B" stands for the magnetic field produced by the superconducting field coils.
