Ship propulsion arrangement

Details Ship propulsion arrangement Ship propulsion arrangement

1993-09-24

1995-04-04

Swinehart, Edwin L.

Marine propulsion

Electric drive for propelling means

440 53, B60L 1102

Patent

active

054032164

ABSTRACT:
A main propulsion arrangement for a high power ship or the like comprises an underwater drive unit connected to and turnable by a substantially vertical tubular shaft journalled in the ship. The drive unit and the tubular shaft define a hollow casing enclosing an electrical propulsion motor connected to a propeller shaft, which is connected to a driving propeller external of the casing. The casing is, at its inside, supported by several mainly vertical web plates, which are arranged to act, in combination, as elements structurally stiffening and supporting the casing, as elements securing the propulsion motor in place relative to the casing, as elements transmitting to the casing reaction forces to the torque developed by the propulsion motor, and as wall elements of ducts for incoming and outgoing gaseous coolant for the propulsion motor.

REFERENCES:
patent: 2691356 (1954-10-01), Waterval
patent: 2714866 (1955-08-01), Pleuger et al.
patent: 3814961 (1974-06-01), Nelson et al.
patent: 4580517 (1986-04-01), Lundberg
patent: 4694645 (1987-09-01), Flyborg et al.
patent: 5218917 (1993-06-01), Harjula et al.
Azipod brochure, published by Kvaerner Masa Yards Inc. and ABB Stromberg Drives Oy date unknown.
The motor ship, 73 (1992) Jul., No. 7, pp. 64-65 Sutton, Surrey, GB.

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