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Ship helm

A technology of rudders and rudder blades, which is applied in the direction of hull, hull parts, ship construction, etc., and can solve problems such as rudder blade danger, increased rudder blade damage risk, rudder blade impact, etc.

Inactive Publication Date: 2008-05-21
BECKER MARINE SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the Costa fairing thus protrudes laterally relative to the rudder blade, and in the event of a collision or shock or pressure, the Costa fairing is in the immediate danger zone before the actual rudder blade is in danger
[0006] However, when the Costa rectifier is subjected to a collision, shock or pressure, the rudder blade is also affected, because the Costa rectifier transmits the force acting on it to the rudder blade, which increases the impact on the rudder blade. The risk of damage will be in danger sooner than a rudder blade without Costa fairing

Method used

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Embodiment Construction

[0030] figure 1 Shown is the stern 11 of the boat 10, with the drive propeller 12 and the rudder 13, its rudder blade 15 is equipped with a pear-shaped or boat-shaped streamlined body 20, the streamlined body 20 is preferably designed as a hollow body, and it can be formed with the rudder blade 15 One body, and may also include two or more parts 21 , 22 fixed on the outer wall surfaces 15 a , 15 b of the rudder blade 15 . The streamlined body 20 can also be designed as a solid body. Along the prolongation of the propeller shaft, an arch is formed in the region of the rudder blade 1 , which forms a streamlined body 20 , the so-called propulsion duct or Costa straightener.

[0031] The streamlined body 20 is designed so that it will self-destruct under the action of pressure, shock or impact.

[0032] To enable the possibility of self-destruction, the wall 25 of the fairing body 20 comprises individual wall sections 30 which are interconnected by predetermined breaking lines 4...

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Abstract

The invention relates to a ship rudder, comprising a propeller driving device, wherein, the propeller is rotatablely arranged around a propeller axle; rubber blades (15); and a streamline body (20) arranged on the rubber blades (15), wherein, the streamline body which takes a pear shape or a boat shape is arranged along the extending line of the propeller axle within the range of the rudder blades; and the streamline body can damage or dismiss automatically when the working force, impact, collision or pressure increases.

Description

technical field [0001] The invention relates to a ship's rudder comprising a rudder blade, which is equipped with a propeller arranged on a drivable propeller shaft, wherein on said rudder blade there is provided a streamlined body, which is pear-shaped or boat-shaped and It is arranged along the extension line of the propeller shaft within the scope of the rudder blade. Background technique [0002] Currently, in propeller drives, the rudder usually has so-called Costa fairings. The effect of this so-called Costa rectifier or also the propulsion duct is to form an arch in the area of ​​the rudder blade along the extension of the propeller shaft, which is configured in a pear-shaped or boat-shaped ( , Zeppelin shape), is a streamlined body. The purpose of this streamlined body is to elongate the overall profile of the hub to such an extent that only a small wake vortex is produced. [0003] Such Costa rectifiers are known, for example, from the documents DE 198 44 353 A1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H25/38
CPCB63H1/20B63H25/42B63H25/38B63B3/40
Inventor 马蒂亚斯·克卢格迪尔克·莱曼
Owner BECKER MARINE SYST
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