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Method for operating a ship, in particular a cargo ship, with at least one magnus rotor

a technology of magnus rotor and cargo ship, which is applied in the direction of special-purpose vessels, marine propulsion, vessel construction, etc., can solve the problems of not being able to produce such a rearward movement physically at all, and the lateral deflection cannot be compensated by the rudder assembly

Inactive Publication Date: 2013-11-07
WOBBEN PROPERTIES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a method to maneuver a ship without a screw propeller by using the Magnus effect, which generates a rearwardly directed force to slow down or stop the ship. This method also reduces the lateral deflection caused by the screw propeller and allows for quicker maneuvering or braking with less screw involvement. Additionally, if the ship is moved partially due to the Magnus rotors, the deflection can be done by the rotors alone or in conjunction with a rudder assembly to assist with maneuering.

Problems solved by technology

Producing such a rearward movement however is not physically possible at all in the case of classic sailing ships by means of the position of the sail and, in the case of ships which have a screw drive, can only be achieved by way of the screw drive.
Producing a rearwardly directed screw force however causes unwanted lateral deflections on the part of the ship which change the course thereof and which, in the event of heavy braking, that is to say producing a rearwardly directed screw force at full power, can be so great that those lateral deflections can no longer be compensated for by the rudder assembly.

Method used

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  • Method for operating a ship, in particular a cargo ship, with at least one magnus rotor
  • Method for operating a ship, in particular a cargo ship, with at least one magnus rotor
  • Method for operating a ship, in particular a cargo ship, with at least one magnus rotor

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Embodiment Construction

[0030]FIG. 1 shows a perspective view of a ship with four Magnus rotors 10. In this case the ship has a hull comprising an underwater region 16 and an above-water region 15. The ship further has four Magnus rotors 10 which are arranged at the four corners of the hull and which are preferably cylindrical. In this case the four Magnus rotors 10 represent wind-operated drives for the ship according to the invention. The ship has a bridge 30 arranged in the forecastle. The ship has underwater a screw 50 or a propeller 50 as well as a rudder assembly 60 or a rudder 60. For improved maneuverability the ship can also have transverse thruster rudders, wherein preferably one is provided at the stern and one to two transverse thruster rudders are provided at the bow (not shown). Preferably those transverse thruster rudders are driven electrically. In this case the bridge 30 and all superstructures above the weather deck 14 are of an aerodynamic configuration to reduce wind resistance. That is...

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Abstract

The invention relates to a method for operating a ship, in particular a cargo ship, with at least one Magnus rotor, comprising a step of detecting the direction of a wind. Furthermore, the at least one Magnus rotor is operated with one direction of rotation, so that by means of the interaction between the wind and the Magnus rotor a force is generated which is directed substantially opposite the forward direction of the ship.

Description

BACKGROUND[0001]1. Technical Field[0002]The invention concerns a method of operating a ship, in particular a cargo ship, with at least one Magnus rotor.[0003]2. Description of the Related Art[0004]Magnus rotors are also known as Flettner rotors or sailing rotors.[0005]The Magnus effect describes the occurrence of a transverse force, that is to say perpendicularly to the axis and to the afflux flow direction, in the case of a cylinder which rotates about its axis and which has an afflux flow perpendicularly to the axis. The flow around the rotating cylinder can be viewed as a superimposition of a homogeneous flow and an eddy around the body. The irregular distribution of the overall flow affords an asymmetrical distribution of pressure at the cylinder periphery. A ship is thus provided with rotating or turning rotors which in the flow of the wind generate a force perpendicular to the effective wind direction, that is to say the wind direction which is corrected with the highest speed...

Claims

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Application Information

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IPC IPC(8): B63H9/02
CPCB63H9/02Y02T70/5236
Inventor WOBBEN, ALOYS
Owner WOBBEN PROPERTIES GMBH
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