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Rudder bulb type thrust fin-based rudder device

A thrust fin and rudder ball type technology, which is applied in the field of rudder devices, can solve problems such as rising, and achieve the effects of low noise, good energy saving effect and easy installation.

Inactive Publication Date: 2010-12-01
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the experimental data in Japan and the actual ship use effect, the boosting efficiency of the traditional rudder with thrust fins can reach about 3%, and there is still room for improvement

Method used

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  • Rudder bulb type thrust fin-based rudder device
  • Rudder bulb type thrust fin-based rudder device
  • Rudder bulb type thrust fin-based rudder device

Examples

Experimental program
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Embodiment Construction

[0017] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0018] combine Figure 1-6 , the present invention is based on the rudder device of the rudder ball type thrust fin, including a rudder 2 and a propeller 1, and is characterized in that: it also includes a rudder ball 3 and a thrust fin 4, the rudder ball 3 is installed on the front part of the rudder 2, and the rudder The center of the ball 3 is facing the axis of the propeller 1, and two thrust fins 4 are installed on the left and right sides of the rudder ball 3. The rudder ball 3 is an ellipsoidal body of revolution, and the installation angles of the two thrust fins 4 are opposite.

[0019] Main geometric parameters of the rudder ball 3 The diameter of the rudder ball 3 is mainly related to the diameter of the propeller 1 or the diameter of the hub. It is generally believed that the ratio of the diameter of the rudder ball 3 to the diameter of the propeller...

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Abstract

The invention aims to provide a rudder bulb type thrust fin-based rudder device, which comprises a rudder, a propeller, a rudder bulb and thrust fins. The rudder bulb is arranged on the front part of the rudder; the center of the rudder bulb is aligned to an axial lead of the propeller, and two thrust fins are arranged on the left side and right side of the rudder bulb. The rudder bulb type thrust fin-based rudder device has the advantages of reasonable structure, simple and convenient installation, good energy-saving effect, low noise, low cost, and easy modification of the conventional old ships.

Description

technical field [0001] The invention relates to a ship rudder device in the field of ship propulsion and energy-saving technical equipment. Background technique [0002] High fuel costs, continuously increasing fuel demand, and the International Maritime Organization (IMO) have clearly proposed the implementation schedule of the Energy Efficiency Design Index (EEDI) and the Energy Efficiency Operation Index (EEOI), making the issue of ship energy conservation particularly urgent. The issue of energy saving and emission reduction has become an issue that governments, industrial circles and science and technology departments of all countries pay close attention to. [0003] The main energy-saving measures for ships include: carrying out research on excellent ship types, developing high-efficiency propellers, and developing additional hydrodynamic energy-saving devices. Since optimization of hull shape and optimization of power plant measures can generally only be used at the ...

Claims

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Application Information

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IPC IPC(8): B63H25/38B63H5/07
Inventor 郭春雨胡文婷常欣黄胜于凯
Owner HARBIN ENG UNIV