KR101580402B1 - A rudder for ship and ship thereof - Google Patents
A rudder for ship and ship thereof Download PDFInfo
- Publication number
- KR101580402B1 KR101580402B1 KR1020140099908A KR20140099908A KR101580402B1 KR 101580402 B1 KR101580402 B1 KR 101580402B1 KR 1020140099908 A KR1020140099908 A KR 1020140099908A KR 20140099908 A KR20140099908 A KR 20140099908A KR 101580402 B1 KR101580402 B1 KR 101580402B1
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- KR
- South Korea
- Prior art keywords
- rudder
- ship
- propeller
- present
- leading edge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/06—Steering by rudders
- B63H25/38—Rudders
Abstract
The present invention relates to a rudder for a ship, which is provided at the rear of a propeller and manages a navigation direction of the ship, comprising: a rudder upper portion having a leading edge deflected to one side; And a rudder lower portion having a leading edge for allowing the flat section to be laterally symmetrical.
The present invention also relates to a ship including a ship rudder, comprising: a plurality of propellers; And a plurality of marine rudders respectively positioned behind the propeller, wherein the marine rudder comprises: a rudder upper portion having a leading edge deflected to one side; And a rudder lower portion having a leading edge for allowing the flat section to be laterally symmetrical.
The rudder for a ship and a ship including the same according to the present invention are formed with symmetrical lower sections in the left and right sides and upper sections are formed asymmetrically in the left and right directions and the center part is formed continuously to smoothly connect the upper and lower parts, So that the rudder can be optimized for the downstream flow of the biaxial axis, thereby maximizing the thrust of the biaxial axis, increasing the propulsion efficiency, and minimizing the energy consumption.
Description
The present invention relates to a ship rudder and a ship including the same.
The present invention is derived from a research carried out by the Ministry of Knowledge Economy and the Korea Industrial Technology Evaluation and Management Center as part of the project for the development of technology for the industrial convergence technology [Task No.: 10040060, Title: And solid lines]
Generally, in the case of a large ship, the propulsion attached to the rear of the hull is advanced by using the flow of the fluid generated when the propeller rotates. At this time, a rudder is attached to the rear of the propeller, and as the rudder rotates to the left and right, the direction of flow of the fluid is changed by changing the direction of flow.
In order to achieve a constant speed through the rotation of the propeller, the engine must be driven using oil such as diesel. In this case, a large amount of oil is consumed and the greenhouse gas is discharged, thereby causing problems such as environmental destruction .
Recently, various efforts have been made to reduce fuel consumption by reducing the energy consumed when propelling the ship. IMO, in particular, discussed ways to reduce greenhouse gas emissions in 2010, and discussions are underway to establish standards and directions for fuel efficiency regulation.
As shipping companies join the movement, shipping companies are beginning to pay attention to fuel-saving vessels that can reduce the burden on fuel costs. Due to the needs of shipping companies, shipbuilders are constantly researching and developing fuel-saving technologies that reduce fuel consumption and reduce greenhouse gas emissions.
As an example of the fuel saving type technology, an energy saving device (ESD: Energy Saving Device) which saves fuel by improving the propulsion efficiency by improving the shape of a ship's rear end, propeller, rudder, This energy saving device has already been applied to a large number of ships.
Recently, in addition to adding an energy saving additional device (ESD) to a ship, a lot of research and development has been carried out on optimizing the shape of hull, rudder, skeg, and the like.
It is an object of the present invention to provide a rudder structure in which the shape of the rudder located at the rear of the propeller is formed asymmetrically in the upper section and the lower section is symmetrical in the left and right direction and the rudder center section is formed continuously, So as to improve the straightness of the ship and increase the propulsive force of the ship and reduce the fuel consumption of the ship, and a ship including the rudder.
It is also an object of the present invention to provide a rudder configuration in which the rudder lower end surface is configured to be symmetrical with respect to the bumper axis so as to be optimized for the wake flow in the biaxial line to greatly improve the thrust of the biaxial line, And to provide a ship rudder for maximizing energy efficiency and a ship including the rudder.
A rudder for a ship according to an embodiment of the present invention is a rudder for a ship which is installed at the rear of a propeller and manages a direction of a ship, the rudder comprising: a rudder upper portion having a leading edge deflected to one side; And a rudder lower portion having a leading edge for allowing the flat section to be laterally symmetrical.
Specifically, a rudder center portion connecting the rudder upper portion and the rudder lower portion; And a rudder bulb protruding from the rudder center portion.
Specifically, the leading edge of the upper portion of the rudder may have a shape inclined toward the port or starboard from the lower end to the upper end.
Specifically, the leading edge of the upper portion of the rudder may be formed as an up-and-down vertical direction.
Specifically, the leading edge of the lower portion of the rudder may be formed as an up-and-down vertical direction.
Specifically, the leading edge of the upper portion of the rudder can be deflected in a direction opposite to the rotational direction of the upper portion of the propeller.
Specifically, the rudder upper portion may have a flat cross-section asymmetrically.
Further, a ship including a ship rudder according to an embodiment of the present invention includes: a plurality of propellers; And a plurality of marine rudders respectively positioned behind the propeller, wherein the marine rudder comprises: a rudder upper portion having a leading edge deflected to one side; And a rudder lower portion having a leading edge for allowing the flat section to be laterally symmetrical.
Specifically, the leading edge of the upper portion of the rudder may be bilaterally symmetrical with respect to the longitudinal plane of the ship.
Specifically, a rudder center portion connecting the rudder upper portion and the rudder lower portion; And a rudder bulb protruding from the rudder center portion.
Specifically, the leading edge of the upper portion of the rudder may have a shape inclined toward the port or starboard from the lower end to the upper end.
Specifically, the leading edge of the upper portion of the rudder may be formed as an up-and-down vertical direction.
Specifically, the leading edge of the lower portion of the rudder may be formed as an up-and-down vertical direction.
Specifically, the leading edge of the upper portion of the rudder can be deflected in a direction opposite to the rotational direction of the upper portion of the propeller.
Specifically, the rudder upper portion may have a flat cross-section asymmetrically.
The rudder for a ship and the ship including the same according to the present invention are formed such that the lower end surface is symmetrically formed at the lower end and the upper end surface is formed asymmetrically and the middle portion is formed continuously to smoothly connect the upper portion and the lower portion, So that the rudder can be optimized for the downstream flow of the biaxial line, thereby maximizing the thrust of the biaxial line, increasing the propulsion efficiency, and minimizing the energy consumption.
1 is a rear view of a ship rudder according to a first embodiment of the present invention.
2 is a perspective view of a marine rudder according to a first embodiment of the present invention.
3 is a right side view of a ship rudder according to the first embodiment of the present invention.
4 is a bottom view of a ship rudder according to the first embodiment of the present invention.
5 is a front view of a marine rudder according to the first embodiment of the present invention.
6 is a left side view of a marine rudder according to the first embodiment of the present invention.
7 is a plan view of a ship rudder according to the first embodiment of the present invention.
8 is a rear view of a ship rudder according to a second embodiment of the present invention.
9 is a perspective view of a marine rudder according to a second embodiment of the present invention.
10 is a right side view of a ship rudder according to a second embodiment of the present invention.
11 is a bottom view of a ship rudder according to a second embodiment of the present invention.
12 is a front view of a ship rudder according to a second embodiment of the present invention.
13 is a left side view of a ship rudder according to a second embodiment of the present invention.
14 is a plan view of a ship rudder according to a second embodiment of the present invention.
15 is a rear view of a ship rudder according to a third embodiment of the present invention.
16 is a perspective view of a marine rudder according to a third embodiment of the present invention.
17 is a right side view of a marine rudder according to a third embodiment of the present invention.
18 is a bottom view of a ship rudder according to a third embodiment of the present invention.
19 is a front view of a marine rudder according to a third embodiment of the present invention.
20 is a left side view of a ship rudder according to a third embodiment of the present invention.
21 is a plan view of a ship rudder according to a third embodiment of the present invention.
Fig. 22 is a measurement chart of the starboard side nominal rebound test performed on a short axis without a propeller. Fig.
FIG. 23A is an axial velocity distribution chart of a propeller wake tested on a short axis equipped with a propeller, and FIG. 23B is a rotational velocity distribution chart of a propeller wake measured on a short axis equipped with a propeller.
Fig. 24A is an axial velocity distribution diagram of the nominal counter current that was experimented on the biaxial axis without the propeller, and Fig. 24B is the rotational direction velocity distribution diagram of the nominal counter current which was experimented on the biaxial axis without the propeller.
25A is an axial velocity distribution chart of a propeller wake tested on a biaxial shaft equipped with a propeller, and Fig. 25B is a rotational velocity distribution chart of a propeller wake measured on a biaxial shaft equipped with a propeller.
26 is a rear perspective view of a pair of shafts equipped with a ship rudder according to the first embodiment of the present invention.
FIG. 27 is a rear perspective view of a pair of shafts equipped with a ship rudder according to a second embodiment of the present invention. FIG.
28 is a rear perspective view of a pair of shafts equipped with a ship rudder according to a third embodiment of the present invention.
29 is a perspective view of a ship according to a fourth embodiment of the present invention.
30 is a perspective view of a ship according to a fifth embodiment of the present invention.
31 is a perspective view of a ship according to a sixth embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
2 is a perspective view of a marine rudder according to a first embodiment of the present invention, and Fig. 3 is a perspective view of a marine rudder according to the first embodiment of the present invention. Fig. Fig. 5 is a front view of a ship rudder according to the first embodiment of the present invention, Fig. 6 is a front view of the rudder according to the first embodiment of the present invention, Fig. FIG. 7 is a plan view of a rudder for a ship according to a first embodiment of the present invention, and FIG. 26 is a rear perspective view of a biaxial line equipped with a rudder for a ship according to the first embodiment of the present invention.
1 to 7 and 26, a
The
Prior to the description of the rudder
Fig. 22 is a diagram showing a starboard side nominal whirling current measured on a short axis without a propeller, Fig. 23A is an axial velocity distribution chart of a propeller wake measured on a short axis equipped with a propeller, FIG. 24A is an axial velocity distribution diagram of a nominal current counterflow experimented on a twinaxial line without a propeller, FIG. 24B is a graph showing a rotational speed distribution of the propeller in the rotational direction 25A is an axial velocity distribution chart of a propeller wake measured on a biaxial axis equipped with a propeller, and FIG. 25B is a rotational velocity distribution diagram of a propeller wake measured on a biaxial axis equipped with a propeller.
Hereinafter, the reference of the rotation direction is to designate a clockwise or counterclockwise direction on the basis of looking at the bow (not shown) of the
In the drawings of FIGS. 22 to 25, Y is a coordinate axis indicating a horizontal line with respect to the
Figs. 22, 23A and 25A are velocity values representing the axial velocity of the fluid (the velocity in the direction opposite to the advancing direction of the hull 500) (In Fig. 24A, the axial velocity is represented only by the constant velocity line, not the color), Figs. 22, 23B, 24B and 25B show the rotation direction of the fluid by a velocity value The direction of the arrow indicates the direction of rotation, and the length of the arrow indicates the rotation speed).
22 and 23 (a) and (b) show experimental results on a minor axis line (not shown). Fig. 22 shows the flow when the
22, the axial velocity of the fluid decreases as it approaches the axis (not shown) of the
23A, there is an axial velocity of the fastest fluid at any point on the starboard side in the axis of the
22 and 23 (a) and (b), it can be seen that the upper portion of the
In order to fabricate a ship rudder having an optimal shape for the downstream flow of the
24 (a), (b) and 25 (a) and (b) show experimental results on the
Referring to FIG. 24A, the axial velocity of the fluid increases from the upper side to the lower side. Referring to FIG. 24B, the fluid flows into the inner upper end, and locally, the
25A, the axial velocity of the lower portion of the
Referring to FIG. 25B, it appears that the
Specifically, the upper portion has a greater lateral velocity from the outside to the inside, while the lower portion has an upward velocity with almost no lateral velocity. The outer side shows a very large longitudinal velocity from the lower side to the upper side, and the lateral side velocity from the outer side to the inner side exists at the upper side.
In the embodiment of the present invention, the flow of the upper part of the downstream flow of the
As a result, in the embodiment of the present invention, the
The rudder
The rudder
In the rudder
In addition, the rudder
By configuring the shape of the rudder
The rudder
Thus, the rudder
The lower portion of the downstream flow of the
Therefore, in the embodiment of the present invention, the cross section of the rudder
The
The rudder
Therefore, the front surface of the
Referring to FIG. 26, in the embodiment of the present invention, a plurality of
The
Specifically, the rudder upper leading
The
The
Since the
FIG. 8 is a rear view of a rudder for a ship according to a second embodiment of the present invention, FIG. 9 is a perspective view of a rudder for a ship according to a second embodiment of the present invention, and FIG. 10 is a perspective view of the rudder for a ship according to the second embodiment of the present invention. 11 is a bottom view of a rudder for a ship according to a second embodiment of the present invention, Fig. 12 is a front view of a rudder for a ship according to a second embodiment of the present invention, and Fig. 13 is a front view of the rudder according to the second embodiment of the present invention Fig. 14 is a plan view of a rudder for a ship according to a second embodiment of the present invention, and Fig. 27 is a rear perspective view of a biaxial rudder equipped with a rudder for a ship according to a second embodiment of the present invention.
8 to 14 and 27, the
The
The configuration and effects of the rudder
The
The
The
27, in the second embodiment of the present invention, the
The
More specifically, the rudder upper leading
FIG. 15 is a rear view of a rudder for a ship according to a third embodiment of the present invention, FIG. 16 is a perspective view of a rudder for a ship according to a third embodiment of the present invention, and FIG. 17 is a perspective view of a rudder for a ship according to the third embodiment of the present invention 19 is a front view of a marine rudder according to a third embodiment of the present invention, and Fig. 20 is a front view of a marine rudder according to a third embodiment of the present invention. Fig. 18 is a bottom view of a marine rudder according to a third embodiment of the present invention. Fig. 21 is a plan view of a rudder for a ship according to a third embodiment of the present invention, and Fig. 28 is a rear perspective view of a biaxial rudder equipped with a rudder for a ship according to a third embodiment of the present invention.
15 to 21 and 28, the
The
The ship's
The
28, in the third embodiment of the present invention, the
The
Specifically, the rudder upper leading
The
The
One end of the
The
As described in the experimental results shown in Figs. 22 to 25 in the first embodiment of the present invention, in the downstream flow of the
Therefore, in the third embodiment of the present invention, the wing effect can be additionally obtained by additionally providing the
In other words, the
As described above, the
FIG. 29 is a perspective view of a ship according to a fourth embodiment of the present invention, FIG. 30 is a perspective view of the ship according to the fifth embodiment of the present invention, FIG. 31 is a perspective view of the ship according to the sixth embodiment of the present invention, to be.
29 to 31, the ship scales 600a, 600b, and 600c according to the fourth to sixth embodiments of the present invention are installed at the rear of the
The
The
The
That is, the
The
At least one
The
The
The
The
Since the ship scales 600a, 600b and 600c are provided on the rudder
Specifically, as described in the experimental results shown in Figs. 22 to 25 in the first embodiment of the present invention, in the wake flow of the
Therefore, in the fourth to sixth embodiments of the present invention, the cross-sectional shape of the
The ship scales 600a, 600b and 600c are provided between the
However, in the fourth to sixth embodiments of the present invention, since the cross-sectional shape of the
As described above, the ship scales 600a, 600b, and 600c according to the fourth to sixth embodiments of the present invention are formed so that the shape of the
The shape of the
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
1,2,3:
10b: Ship's
11: first vessel rudder 12: second vessel rudder
13: rudder for third vessel 14: rudder for fourth vessel
15: Fifth ship rudder 16: Sixth ship rudder
100: rudder body 1001: leading edge
1001a: rudder upper leading
1001c: rudder center leading edge 1002: trailing edge
101: rudder upper part 102: rudder lower part
103: rudder center portion 104: rudder upper surface
105: rudder bottom 106: rudder seat
107: rudder 200: rudder bulb
200a: first rudder bulb 200b: second rudder bulb
300: fin 400: propeller
500: Hull 501: The rear of the hull
600a: Ship skeg according to the fourth embodiment
600b: Ship skeg according to the fifth embodiment
600c: Ship skeg according to the sixth embodiment
610: skeg body 611: skegging edge
612: Skeg trailing edge 613: Skeg seat face
614: Schedule right side
Claims (15)
A rudder top having a leading edge deflected to one side; And
And a rudder lower portion having a leading edge such that the flat section is laterally symmetrical,
Each of said marine rudders comprises:
Characterized in that the rudder is installed symmetrically with respect to a line perpendicular to the sea surface in order to be optimized for the wake flow due to the interference between the wake of the propeller of the biaxial line.
A rudder center portion connecting the rudder upper portion and the rudder lower portion; And
And a rudder bulb protruding from the rudder center portion.
Wherein the rudder has a shape tilted to the left or right as it goes from the lower end to the upper end.
And the vertical rudder is formed in a vertical direction.
And the vertical rudder is formed in a vertical direction.
And is deflected in a direction opposite to the rotational direction of the upper portion of the propeller.
Wherein the flat section is formed asymmetrically.
The marine rudder includes:
A rudder top having a leading edge deflected to one side; And
And a rudder lower portion having a leading edge such that the flat section is laterally symmetrical,
Each of said marine rudders comprises:
Are installed symmetrically with respect to a line normal to the sea surface in order to be optimized for the wake flow due to the interference between the propeller wakes of the biaxial lines.
Wherein the longitudinal axis of the ship is symmetrical with respect to the longitudinal axis of the biaxial line.
A rudder center portion connecting the rudder upper portion and the rudder lower portion; And
And a rudder bulb protruding from the rudder center portion.
Characterized in that it has a shape tilted from the lower end to the upper end toward the port or starboard side.
And the upper and lower vertical sides of the ship.
And the upper and lower vertical sides of the ship.
Wherein the propeller is deflected in a direction opposite to the rotational direction of the upper portion of the propeller.
Wherein the flat section is configured asymmetrically.
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KR1020140099908A KR101580402B1 (en) | 2014-08-04 | 2014-08-04 | A rudder for ship and ship thereof |
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KR1020140099908A KR101580402B1 (en) | 2014-08-04 | 2014-08-04 | A rudder for ship and ship thereof |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020175741A (en) * | 2019-04-17 | 2020-10-29 | サノヤス造船株式会社 | Vessel rudder fin device |
KR20230039452A (en) * | 2021-09-14 | 2023-03-21 | 현대중공업 주식회사 | A rudder for ship |
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US5415122A (en) * | 1993-10-13 | 1995-05-16 | The United States Of America As Represented By The Secretary Of The Navy | Twisted rudder for a vessel |
JPH07237594A (en) * | 1994-02-28 | 1995-09-12 | Hitachi Zosen Corp | Rudder in ship |
JP2004299420A (en) * | 2003-03-28 | 2004-10-28 | Mitsui Eng & Shipbuild Co Ltd | Rudder with fin and vessel |
KR200395385Y1 (en) | 2005-06-30 | 2005-09-08 | 삼성중공업 주식회사 | Rudder for Ship |
KR20110007721A (en) * | 2009-07-17 | 2011-01-25 | 대우조선해양 주식회사 | Rudder for ship |
KR20130090027A (en) | 2012-02-03 | 2013-08-13 | 현대중공업 주식회사 | Moving-type skeg on top of the rudder for improving course-stability |
KR101281977B1 (en) | 2007-11-13 | 2013-11-27 | 베커 마린 시스템즈 게엠베하 운트 콤파니 카게 | Rudder for ships |
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2014
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US5415122A (en) * | 1993-10-13 | 1995-05-16 | The United States Of America As Represented By The Secretary Of The Navy | Twisted rudder for a vessel |
JPH07237594A (en) * | 1994-02-28 | 1995-09-12 | Hitachi Zosen Corp | Rudder in ship |
JP2004299420A (en) * | 2003-03-28 | 2004-10-28 | Mitsui Eng & Shipbuild Co Ltd | Rudder with fin and vessel |
KR200395385Y1 (en) | 2005-06-30 | 2005-09-08 | 삼성중공업 주식회사 | Rudder for Ship |
KR101281977B1 (en) | 2007-11-13 | 2013-11-27 | 베커 마린 시스템즈 게엠베하 운트 콤파니 카게 | Rudder for ships |
KR20110007721A (en) * | 2009-07-17 | 2011-01-25 | 대우조선해양 주식회사 | Rudder for ship |
KR20130090027A (en) | 2012-02-03 | 2013-08-13 | 현대중공업 주식회사 | Moving-type skeg on top of the rudder for improving course-stability |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020175741A (en) * | 2019-04-17 | 2020-10-29 | サノヤス造船株式会社 | Vessel rudder fin device |
JP7219664B2 (en) | 2019-04-17 | 2023-02-08 | 株式会社新来島サノヤス造船 | ship rudder fin device |
KR20230039452A (en) * | 2021-09-14 | 2023-03-21 | 현대중공업 주식회사 | A rudder for ship |
KR102537537B1 (en) | 2021-09-14 | 2023-05-30 | 에이치디현대중공업 주식회사 | A rudder for ship |
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