Ship

A technology for ships and hulls, which is applied in the field of ships with stern bulbous bows, can solve problems such as wake turbulence and reduced propulsion performance, and achieve the effects of improving propulsion performance, reducing propulsion performance, and reducing vibration.

Active Publication Date: 2018-05-11
MITSUI ENG & SHIPBUILD CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is considered that the wake gathered by the stern bulbous bow is largely disordered, resulting in a decrease in propulsion performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ship
  • Ship
  • Ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Below, while referring to the attached Figure 1 Next, the ship with a bulbous bow according to the embodiment of the present invention will be described. Such as figure 1 As shown, the ship 1 with a stern bulbous bow has a side shell 2, a ship bottom 3, a rudder 4 and a propeller 10 at the stern, the propeller 10 is connected to a propeller hub 11, and the propeller hub 11 is fixed by a propeller hub cap 13 propeller shaft 12.

[0041] Additionally, if Figure 1 ~ Figure 3 As shown, there is a stern bulb 20 in the shape of a rotating body at the periphery of the propeller propulsion shaft 12 at the stern, and the stern bulb 20 is used to smooth the flow of water flowing into the propeller 10, and is fabricated along the circumference Cp of the propeller 10 Uniform wake distribution, thereby improving the mutual interference between the hull and the propeller 10 and realizing the improvement of self-propelled elements.

[0042] Furthermore, in the present invention...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A stern-bulb-equipped ship (1) equipped with a stern bulb (20), wherein the stern bulb (20) is located forward of a propeller (10) in the stern and a vertical member (22) is provided so as to protrudedownward below the rear of the stern bulb (20), the vertical member (22) and the body of the ship being integrated into a single structure. Thus, the improvement in propulsive performance and the reduction in oscillation during straight travel are achieved by the stern bulb (20). Furthermore, even in the initial period of turning, a relatively large counter-turning moment which counteracts the turning moment is provided, and excellent course stability and the effectiveness of suppressing the reduction in propulsive performance are achieved.

Description

technical field [0001] The present invention relates to a ship with a stern bulb. The ship with a stern bulb is equipped with a stern bulb at the stern and in front of the propeller. In the initial stage of rotation, the anti-rotation moment against the rotation moment is increased to stabilize the route. The performance is improved, and the rectification effect at the stern bulb is maintained to prevent the reduction of propulsion performance. Background technique [0002] Recently, a ship with a stern bulbous bow 1X has been adopted as follows: Figure 10 ~ Figure 12 As shown, a stern bulb 20 in the shape of a rotating body is provided around a propeller propulsion shaft 12 in front of the propeller 10 at the stern of the ship. Although this bulbous stern ship is used for a high-speed ship that requires a certain speed or more, it is recently considered to be also applied to a low-speed ship and a medium-speed ship. The stern bulb of this vessel with a stern bulb is provi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B63B1/08
CPCB63B1/08Y02T70/10
Inventor 山本虎卓秋林秀聪藤田智冈沙织
Owner MITSUI ENG & SHIPBUILD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap