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Air cavity vessel having longitudinal and transverse partitions

a technology of air cavity vessel and longitudinal and transverse partition, which is applied in the direction of special-purpose vessels, vessel construction, transportation and packaging, etc., can solve the problems of uneconomically propelled vessel, fuel consumption, and vessel use, and achieve the effect of simplifying the configuration of air supply means, facilitating pressure equilibrium in air layers, and minimizing the power required to supply air

Inactive Publication Date: 2012-05-10
HYUNDAI HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This configuration stabilizes air layers, reduces resistance, and maintains efficient propulsion on rough seas by minimizing air leakage and optimizing air flow, allowing for continuous resistance reduction and stable operation.

Problems solved by technology

However, these known vessels can be used only for flat water.
In detail, since air leaks out of the downward open type air cavity when the vessel is rocked and tossed while sailing, the air cavity fails to properly exert its function, and causes the high resistance of the vessel to increase the consumption of fuel, so that the vessel is uneconomically propelled.
The propeller is adversely affected by air arriving from the cavity.
This reduces a lift force of propeller blades to make a thrust force and torque unstable or eliminate a thrust force.

Method used

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  • Air cavity vessel having longitudinal and transverse partitions
  • Air cavity vessel having longitudinal and transverse partitions
  • Air cavity vessel having longitudinal and transverse partitions

Examples

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Embodiment Construction

[0034]Reference will now be made in greater detail to an exemplary embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.

[0035]As is well known in the art, when air is injected from the fore of the vessel into a recess formed in the bottom of the vessel, friction between the water and a hull surface is converted into a friction between the air and water by a wide air layer formed in the bottom of the vessel, so that the largest proportion of the frictional resistance of the vessel can be remarkably reduced. However, in large vessels that are moving on the waves, it is actually difficult to form a stable air layer under all conditions.

[0036]The present invention is directed to forming a stable air layer in a large vessel that is moving in rough seas. To this end, a recess is formed in the bottom of the vesse...

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Abstract

An air cavity vessel having longitudinal and transverse partitions is provided. The air cavity vessel, which injects air into the bottom thereof to form air layers in order to reduce resistance of the vessel, includes transverse partitions partitioning the bottom in a transverse direction, longitudinal partitions partitioning the bottom in a longitudinal direction, spatial areas defined in a grid pattern by the transverse partitions and the longitudinal partitions, an air supply unit installed in a forebody of the vessel and supplying compressed air into the spatial areas, and a compressor for supplying the compressed air to the air supply unit. Thereby, multiple air layers are formed on a bottom flat area on a small scale.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates, in general, to an air cavity vessel having longitudinal and transverse partitions and, more particularly, to an air cavity vessel having longitudinal and transverse partitions, in which the longitudinal and transverse partitions are formed on a flat bottom area in a grid pattern, and spatial areas defined by the longitudinal and transverse partitions are supplied with air so as to form multiple air layers on a small scale.[0003]2. Description of the Related Art[0004]A well-known type of air cavity vessels employs technology that reduces the resistance to water by i.e. injecting air into a flat bottom area to thereby form air layers and reduce a submerged surface area of the hull.[0005]One of such air cavity vessels is known from U.S. Pat. No. 3,595,191, in which a bottom of a hull of a seagoing vessel such as an oil tanker is provided with a plurality of downward open type air cavities. Th...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63B1/38
CPCY02T70/122B63B1/38Y02T70/10
Inventor MIN, KEH-SIKGO, SEOK-CHEONLEE, HONG-GI
Owner HYUNDAI HEAVY IND CO LTD