Abstract: The invention provides an encapsulated magnetically geared brushless electric marine propulsion system with the principle components arranged axially around the central shaft. The marine propulsion system includes: the brushless DC motor, comprised of the stator fixed to the central shaft and motor magnets fixed within the motor rotor coupled to the central shaft using precision ball bearings; the high-speed magnetic gear rotor coupled to the motor rotor comprising an alternating array of magnets fixed to a ferromagnetic backing; the environmental barrier which protects the motor and additionally houses pole pieces to modulate magnetic flux; the low-speed magnetic gear rotor coupled to the central shaft and comprised of an alternating array of magnets fixed to a ferromagnetic backing; the propeller coupled to the low-speed magnetic gear rotor; and the shroud coupled to the struts of the motor mounting system.

Abstract: The invention provides an encapsulated magnetically geared brushless electric marine propulsion system with the principle components arranged axially around the central shaft. The marine propulsion system includes: the brushless DC motor, comprised of the stator fixed to the central shaft and motor magnets fixed within the motor rotor coupled to the central shaft using precision ball bearings; the high-speed magnetic gear rotor coupled to the motor rotor comprising an alternating array of magnets fixed to a ferromagnetic backing; the environmental barrier which protects the motor and additionally houses pole pieces to modulate magnetic flux; the low-speed magnetic gear rotor coupled to the central shaft and comprised of an alternating array of magnets fixed to a ferromagnetic backing; the propeller coupled to the low-speed magnetic gear rotor; and the shroud coupled to the struts of the motor mounting system.

Abstract: An underwater vehicle is provided to move in various orientations and directions, including pitch, yaw, roll, heave, surge and sway. The underwater vehicle comprises an upper body and a lower body, wherein both bodies are separated by two rudders. One rudder is positioned towards the fore of the underwater vehicle, while the other is positioned towards the aft. Each rudder forms the basis of a propulsion system, such that the underwater vehicle has at least two independently controlled propulsion systems. Each propulsion system further comprises an elevator extending horizontally from the sides of each rudder and a thrust generator attached to the elevator. The elevator and thrust generator are able to pitch about an axis extending horizontally through the sides of the rudder, and the rudder is able to yaw about an axis extending vertically through the top and bottom of said rudder.