Vectored propulsion system for sea-going vessels

Details Vectored propulsion system for sea-going vessels Vectored propulsion system for sea-going vessels

1997-09-09

1999-08-24

Swinehart, Ed

Marine propulsion

Electric drive for propelling means

440 53, 440 67, B60L 1102

Patent

active

059417447

ABSTRACT:
A thrust block is positioned by a steerable support in spaced relation to e hull of a seagoing vessel for angular displacement about a propeller axis and the axis of said hull intersecting the propeller axis. Forward and aft sets of propellers are rotatably mounted by hubs in the thrust block for contrarotation by propulsion motors having rotors respectively fixed to the radially outer tips of forward and aft propeller blades and electrically energized by current conducted thereto through stator and rotor windings of transformers respectively mounted in the thrust block and the propeller hubs to avoid propulsive torque transmission by the thrust block. The rotors of the propulsion motors are protectively enclosed by a radially outer shroud assembly which accommodates hydrodynamic cooling during motor operation.

REFERENCES:
patent: 4831297 (1989-05-01), Taylor et al.
patent: 5078628 (1992-01-01), Garis, Jr.
patent: 5289068 (1994-02-01), Veronesi et al.
patent: 5684690 (1997-11-01), Levedahl

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