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Vessel with rotatable pod

a technology of displacement vessel and rotatable pod, which is applied in the direction of waterborne vessels, vessel construction, and propulsive elements, etc., can solve the problems of complicated movements and other problems, and achieve the effect of large draught and effective and efficien

Inactive Publication Date: 2015-06-11
BLUE THRUSTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a jet pipe that is angled to improve the efficiency of propulsion in a vessel. The non-vertical placement of the second axis and the non-perpendicular positioning of the first axis with respect to the second axis allows the position of the axis of the propeller shaft to be adjusted depending on the rotation position of the housing of the pod. The jet pipe is angled so that air bubbles do not enter the propeller and the depth of the inlet of the jet pipe is increased in relation to the vertical, which results in effective propulsive effect even at low speeds. The patent also describes a system where two pod drives are used, with one in the forward position and one in the rearward position. The rotation of the propeller of the medication vessel can be reversed to provide efficient transfer of the propulation from the forward position to the rearward position.

Problems solved by technology

More complicated movements are also possible.
However, this operation is temporary.

Method used

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  • Vessel with rotatable pod
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Examples

Experimental program
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Embodiment Construction

[0042]In FIG. 1, a vessel is designated overall by 1. According to the present invention, this is a relatively large vessel, such as an inland vessel, coaster or larger vessel. The length of the vessel is preferably greater than 20 or 40 metres. The driving power used for such vessels may, for example, be in the range of many kilowatts to several megawatts. The vessel is designated overall by 1 and is provided with a pod 2 at the rear side which is designated by 3. The pod 2 comprises a jet pipe 17 with an inlet delimited by a peripheral edge 11. The waterline in FIG. 1 is indicated by 10 and the longitudinal axis of the hull is indicated by 15. FIG. 1 illustrates the loaded state in which the propeller is entirely under the waterline.

[0043]FIG. 2 illustrates the same vessel 1 in an unladen state, in which the pod is attached in the manner customary in the prior art. It can be seen that the pod, and in particular its propeller, and the inlet of the jet pipe 17 are above the waterlin...

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PUM

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Abstract

A vessel and a method for driving a vessel. The vessel is provided with a pod arranged at the rear side thereof which is arranged rotatably with respect to the vessel. Rotation is effected about an axis which deviates slightly from the vertical. The axis of the propeller shaft forms an angle which is smaller than 90° with the axis of rotation of the pod. As a result of this combined positioning of the rotation shaft of the pod and the positioning of the propeller shaft, the axis of the propeller shaft with respect to the horizontal will vary when the pod is rotated depending on the rotation position of the pod. This permits optimum adaptation to the various operating conditions of the propeller position.

Description

FIELD OF THE INVENTION[0001]The invention relates to a water-displacement vessel comprising a hull with a longitudinal axis, comprising a bottom and comprising a pod drive arranged close to the bottom, said pod drive being provided with a housing containing a propeller shaft which protrudes through the housing and to which propeller shaft a propeller is attached at a propeller end, and a drive for said propeller shaft, which propeller shaft defines a first axis, which housing is rotatable with respect to the hull between a rearward position and a forward position about a rotation shaft which defines a second axis which is not vertical and forms an angle (α) of 40°-90°, preferably between 60°-80°, with the first axis.[0002]More particularly, the present invention relates to relatively large vessels, i.e. vessels having a length of more than 20 metres and in particular more than 50, or even more than 80, metres and having a water displacement of 500 tons or more. The invention also re...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63H5/125B63H5/14B63H5/08B63B1/04
CPCB63H5/125B63H5/08B63H5/14B63B1/04B63H25/42B63H2005/1254
Inventor VAN DER LAAN, MARKUSKOELMAN, HERBERT JANVERHAAR, JANDE BLAEIJ, DIRK JOHANNES
Owner BLUE THRUSTER
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