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Linear integrated design method for bow and appendage of survey ship with fairing

A technology of integrated design and shroud, applied in the direction of hull design, ship design, hull, etc., can solve problems such as the adverse effect of the detection accuracy of the bottom sonar equipment, the leakage of air bubbles on the water surface, etc., to improve fast performance, reduce flow separation and shape Resistance, the effect of reducing the phenomenon of lashing

Pending Publication Date: 2022-01-21
CHINA SHIP DEV & DESIGN CENT
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AI Technical Summary

Problems solved by technology

[0003] At present, the traditional survey ships at home and abroad only consider the needs of ship navigation, and often adopt line shapes that are conducive to rapidity, such as bulbous bow bows and warship-like inclined bows. It is proved that it is easy to cause the air bubbles on the water surface to leak to the bottom of the ship, which will adversely affect the detection accuracy of the sonar equipment on the bottom of the ship

Method used

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  • Linear integrated design method for bow and appendage of survey ship with fairing
  • Linear integrated design method for bow and appendage of survey ship with fairing
  • Linear integrated design method for bow and appendage of survey ship with fairing

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Embodiment 1

[0044] Given that the length of the survey vessel is 70 meters, the width of the vessel is 16 meters, and the design draft is 5.2 meters, the characteristic parameters of a typical bow and appendage line are designed as follows:

[0045] 1) The integrated line type is composed of a vertical bow, an inward-inclined fairing and a matching design of a wide bilge keel.

[0046] 2) The height of vertical bow stem is 6m>1.2T, the height of bow bottom slope is 0.8mT. 600mm45°.

[0047] 3) The front end of the bottom deflector is 12 meters away from the bow<0.25Lpp, the end is 25 meters away from the bow<0.4Lpp, and the side is designed with an inclination / inclination angle of 65 degrees<75°. meters, the maximum width is 4 meters, the length of the end section of the shroud is 2 meters, the inflow angle is 18 degrees < 20 degrees, and the outflow angle is 25 degrees < 30 degrees.

[0048] 4) The width of the bilge keel is 0.9m, taking 6% of the ship’s breadth B, and it is designed a...

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Abstract

The invention relates to an integrated design method for a bow and appendage line type of a survey ship with a fairing, which comprises integrated design of a bow line type, a fairing position and line type, a bilge keel position and line type and the like, and specifically comprises the following steps of: after determining data such as a vertical line length Lpp, a ship width B and a draft T of the ship, designing line type characteristic parameters of the bow and the appendage through the method; bubbles are prevented from being discharged to the surface of the acoustic equipment transducer at the bottom of the ship body along with a streamline, and meanwhile, the streamline is beneficial to reducing resistance and ensuring rapidity.

Description

technical field [0001] The invention belongs to the technical field of line shape design of a survey ship, in particular to an integrated design method for the line shape of the bow and appendage of a survey ship with a deflector. Background technique [0002] In survey ships, equipment such as multi-beam depth sounders, shallow-layer acoustic profilers, and ADCP Doppler current meters are common marine detection equipment, and generally the commonly used shrouds are integrated and installed on the bottom of the ship. However, the fairing, as a large protrusion on the bottom of the ship, has a great adverse effect on the resistance performance of the survey ship. At the same time, the acoustic detection equipment such as the multi-beam depth sounder and the shallow formation acoustic profiler in the dome are extremely sensitive to the bubbles at the bottom of the ship, and the leakage of the bubbles near the water surface will have a great adverse effect on its detection acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B71/00B63B1/06B63B3/46B63B3/38B63B1/40
CPCB63B71/00B63B1/06B63B3/46B63B3/38B63B1/40B63B2001/066Y02T70/10
Inventor 郭彬张新宇王敏凌昊柏铁朝
Owner CHINA SHIP DEV & DESIGN CENT
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