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Air resistance-reduced ship with front propelling plant and skeg course control system

A course control and skeg technology, applied in propulsion components, ship propulsion, rudder steering with propulsion components, etc., can solve problems such as steering offset thrust, poor turning performance, and difficulty in course control

Inactive Publication Date: 2013-06-12
林思桐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It avoids the problems of poor slewing performance of existing ships, offset thrust when turning the rudder, or difficulty in heading control due to rudder failure

Method used

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  • Air resistance-reduced ship with front propelling plant and skeg course control system
  • Air resistance-reduced ship with front propelling plant and skeg course control system
  • Air resistance-reduced ship with front propelling plant and skeg course control system

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Experimental program
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Effect test

Embodiment Construction

[0037] Embodiments of the present invention will be described below based on the drawings.

[0038] Such as figure 1 and Figure 5 As shown, the motor 3 installed in the skeg 2 drives the propeller 4 to rotate, and the crew operates the steering handle 5 of the cab or two wings, and adjusts the speed of the motor 3 through the control cabinet 6 and the electric or hydraulic system 7 .

[0039] Such as figure 1 , figure 2 and Figure 4 As shown, part of the bottom of the ship is used as the nest bottom 8, and the adjacent keel 9, the bow streamlined protrusion 10 and the stern streamlined protrusion 11 form a closed periphery, which forms a nest structure with the nest bottom 8. The opening of the nest structure is downwards. The interior of the nest is separated into multiple closed areas by a plurality of longitudinal sealing plates 12, and the longitudinal sealing plates 12 of different heights are arranged from the middle to both sides. The longitudinal closed area i...

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Abstract

The invention discloses an air resistance-reduced ship with a front propelling plant and a skeg course control system. The major structure, common functions and basic characteristics of the conventional ship are remained, and a ship which is provided with the combined front propelling plant and the skeg course control system and reduces frictional resistance through air lubrication is specially designed. The course is controlled by thrust generated by a propeller in a skeg, a grid stepped multi-nest structure with a downward opening is arranged at the bottom, air is delivered into or discharged from nests timely through a control system and an air supply and discharge system, an isolation state between the water quantity in the nests and a hull bottom is regulated, frictional resistance is reduced, the stability of the ship is improved, a wave eliminating bow is matched with a bow propeller to change a water pressure field around the bow, and wave-making resistance is reduced. The air resistance-reduced ship with the front propelling plant and the skeg course control system has the advantages of better course control, stabilization performance and reduction of energy loss so as to effectively improve the dynamic performance and seagoing capability of the ship.

Description

technical field [0001] The invention mainly relates to the fields of ship design and ship construction, in particular to a method and device for improving ship performance. Background technique [0002] In the prior art, ships with stern propellers, stern rudders or water tank anti-rolling devices are widely used in shipping. The existing ships have the following main problems: [0003] 1. A part of the propeller thrust energy of the existing ship is converted into stern waves and lost. The shape of the stern of the ship seriously affects the state of the water flow into the propeller, resulting in a decrease in the working efficiency of the propeller and a loss of engine power. [0004] 2. The current course control of the existing ship is completed by the combination of the water flow generated by the propeller and the rudder. When the propeller is running at a low speed, the lateral force generated by the water flow through the rudder is small, and the ship's course cont...

Claims

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Application Information

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IPC IPC(8): B63B1/38B63H5/07B63H25/42B63B39/00
CPCY02T70/122Y02T70/10
Inventor 林思桐
Owner 林思桐
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