Marine fishtail rudder

A fishtail rudder, marine technology, applied in the direction of steering with rudder, ship parts, steering gear, etc., can solve the problems of increased water resistance, decreased performance of straight sailing or reversing, etc., and achieve the effect of reducing resistance

Active Publication Date: 2021-09-28
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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  • Marine fishtail rudder
  • Marine fishtail rudder
  • Marine fishtail rudder

Examples

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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 tail plate and a second tail plate; the rudder blade comprises a first rudder surface and a second rudder surface, the first tail plate is hinged to the first rudder surface, and the second tail plate is hinged to the second rudder surface; a motor is arranged in the rudder blade and used for driving the first tail plate and the second tail plate to rotate, so that the tail edge of the first tail plate and the tail edge of the second tail plate are close to or away from the tail edge of the rudder blade. According to the marine fishtail rudder disclosed by the invention, tail plates are respectively arranged on two rudder surfaces at the tail part of the rudder, and the tail plates are rotated through a motor; and during steering, the tail plate is opened to form a rudder shape of a fishtail rudder, so that a relatively high rudder effect is obtained. During direct navigation or backing, the tail plate is closed to form a rudder shape of a streamline rudder, so that the resistance of the rudder is reduced.

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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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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