A kind of marine fishtail rudder

A fishtail rudder, marine technology, applied in rudder steering, ship construction, hull design, etc., can solve the problems of increased water resistance, direct sailing or reversing performance decline, etc., to achieve the effect of reducing resistance

Active Publication Date: 2022-05-31
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the fishtail rudder is in the rudder state, the water pressure on the upstream surface at the rear of the rudder blade increases, which obviously improves the rudder effect. Significantly reduced performance in direct flight or reversing

Method used

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  • A kind of marine fishtail rudder
  • A kind of marine fishtail rudder
  • A kind of marine fishtail rudder

Examples

Experimental program
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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] Such as figure 1 , figure 2 As shown, a fishtail rudder for a ship includes a rudder blade 1, a first stern plate 2 and a second stern plate 3;

[0028] The rudder blade 1 includes a first rudder surface 11 and a second rudder surface 12, the first stern plate 2 is hinged to the first rudder surface 11, and the second stern plate 3 is hi...

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PUM

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Abstract

The invention discloses a marine fishtail rudder, which comprises a rudder blade, a first stern plate and a second stern plate; the rudder blade comprises a first rudder surface and a second rudder surface, and the first stern plate is hinged to the The first rudder surface, the second stern flap is hinged to the second rudder surface; a motor is provided in the rudder blade, and the motor is used to drive the first stern flap and the second stern flap to rotate, so that the The trailing edge of the first stern plate and the trailing edge of the second stern plate are close to or far from the trailing edge of the rudder blade. A marine fishtail rudder disclosed by the present invention is provided with stern plates on the two rudder surfaces of the tail of the rudder respectively, and the stern plates are rotated by a motor. When steering, the stern plates are opened to form a rudder shape of a fishtail rudder and obtain Higher rudder efficiency, when sailing straight or reversing, close the tail flap to form a streamlined rudder shape and reduce the resistance of the rudder.

Description

technical field [0001] The invention relates to the field of marine rudders, in particular to a marine fishtail rudder. Background technique [0002] Ships mainly install rudders on the stern to achieve course stability and gyration, and the performance of the rudder itself has a significant impact on the maneuverability of the ship. In order to improve the rudder effect, a series of special rudder types have been proposed successively, among which the rudder effect of the fishtail rudder is particularly prominent. The cross-section shape of the fishtail rudder is like a flat fish, and the shape is more streamlined than the streamlined rudder with a fish-shaped tail seal. [0003] When the fishtail rudder is in the rudder state, the water pressure on the upstream surface at the rear of the rudder blade increases, which obviously improves the rudder effect. Direct flight or reverse performance is significantly reduced. Contents of the invention [0004] The invention pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H25/38B63H25/24
CPCB63H25/382B63H25/24Y02T70/10B63H25/381
Inventor 侯立勋胡安康常欣林一王顺
Owner DALIAN MARITIME UNIVERSITY
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