KR100681572B1 - Rudder shape of a ship - Google Patents

Rudder shape of a ship Download PDF

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Publication number
KR100681572B1
KR100681572B1 KR1020050083507A KR20050083507A KR100681572B1 KR 100681572 B1 KR100681572 B1 KR 100681572B1 KR 1020050083507 A KR1020050083507 A KR 1020050083507A KR 20050083507 A KR20050083507 A KR 20050083507A KR 100681572 B1 KR100681572 B1 KR 100681572B1
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South Korea
Prior art keywords
rudder
leading edge
shape
ship
cavitation
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KR1020050083507A
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Korean (ko)
Inventor
최영복
이상현
김성표
이상욱
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대우조선해양 주식회사
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Priority to KR1020050083507A priority Critical patent/KR100681572B1/en
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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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A rudder shape of a ship is provided to minimize corrosion due to cavitation by directing a portion of a lower leading edge in a direction similar to an introduction flow. A rudder shape of a ship includes a rudder part(1), and a starboard. The rudder part has a leading edge aligned in a direction similar to an introduction flow. The leading edge is directed to the starboard to form an angle of 3-7 degrees. A portion of the leading edge has a direction similar to the introduction flow with respect to an axial height(2) of a propeller. As a result, the leading edge submerged under the axial height of the propeller has a naturally rotated shape to reduce affectation of cavitation. In addition, since the leading edge is directed to the starboard to form an angle of 3 ~ 7 degrees, it is possible to minimize corrosion due to the cavitation.

Description

선박의 캐비테이션 침식 저감을 위한 러더부의 형상{Rudder shape of a ship} Rudder shape of a ship to reduce cavitation erosion of ships

도 1은 본 발명을 설명하기 위한 러더부의 측면도 1 is a side view of the rudder portion for explaining the present invention

도 2는 본 발명을 설명하기 위한 러더부의 정면도Figure 2 is a front view of the rudder portion for explaining the present invention

도 3은 도 2의 A-A선 단면도3 is a cross-sectional view taken along the line A-A of FIG.

<도면의 주요부분에 대한 부호의 설명><Description of Symbols for Main Parts of Drawings>

1 : 러더부 2 : 프로펠러축심높이1: Rudder part 2: Propeller shaft height

본 발명은 선박의 캐비테이션 침식 저감을 위한 러더부의 형상에 관한 것이다.The present invention relates to the shape of the rudder portion for reducing the cavitation erosion of the vessel.

본 발명은 프로펠러축심높이를 기준으로 러더부의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 소정의 각도로 회전시킨 상태로 형성함으로서 상기 캐비테이션에 의한 침식을 최소화 할 수 있도록 한 것이다.The present invention forms the shape of a portion of the lower leading edge of the rudder part based on the propeller shaft core height in a state in which it is rotated at a predetermined angle in the direction of the starboard so as to face a direction similar to the incident flow. It is to minimize the erosion caused by.

일반적으로 선박의 러더부는 프로펠러 후류의 영향을 받아 캐비테이션에 의 한 침식현상이 발생되는 부분이며 특히, 프로펠러축심높이를 기준으로 하는 러더부의 아래 부분 즉 가동부인 리딩엣지쪽의 포트면은 구조적으로 상기 프로펠러 후류 특성의 영향을 더욱 많이 받고 있는 부분으로서 상기 러더부의 아래 부분 즉 가동부인 리딩엣지쪽의 포트면이 캐비테이션에 의한 침식현상이 크게 발생되지 않도록 상기 러더부의 형상을 개선해야 할 필요성이 있다.In general, the rudder part of the ship is the part where erosion occurs by cavitation under the influence of the propeller wake. In particular, the lower part of the rudder part based on the propeller shaft height, that is, the port surface of the leading edge, which is the moving part, is structurally the propeller. It is necessary to improve the shape of the rudder part so that the erosion phenomenon due to cavitation does not occur significantly in the port surface of the lower part of the rudder part, that is, the leading edge side, which is the movable part, as a part which is more affected by the wake characteristic.

본 발명은 프로펠러축심높이를 기준으로 러더부의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 소정의 각도로 회전시킨 상태로 형성함으로서 상기 캐비테이션에 의한 침식을 최소화 할 수 있도록 함을 목적으로 한다.The present invention forms the shape of a portion of the lower leading edge of the rudder part based on the propeller shaft core height in a state in which it is rotated at a predetermined angle in the direction of the starboard so as to face a direction similar to the incident flow. To minimize the erosion caused by

상기 목적을 달성하기 위한 본 발명은 캐비테이션에 의한 침식현상에 노출되어 있는 러더부의 상기 침식현상을 최소화 하기 위해 가동부의 프로펠러축심높이 아래의 단면에서 리딩엣지 일부분의 형상을 스타보드 방향으로 회전시켜 입사류와 비슷한 방향을 향하도록 함으로써 캐비테이션을 감소시키도록 한 선박의 캐비테이션 침식 저감을 위한 러더부의 형상을 제안함으로서 상기 목적을 달성하고자 한다.The present invention for achieving the above object is to rotate the shape of the leading edge portion in the cross-section below the propeller shaft core height of the movable part in order to minimize the erosion of the rudder portion exposed to the erosion by cavitation incident flow It is an object of the present invention to propose a shape of a rudder portion for reducing cavitation erosion of a ship, which reduces the cavitation by facing in a direction similar to.

본 발명은 선박의 러버부에 있어서, 프로펠러축심높이(2)를 기준으로 러더부(1)의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 3~7°의 각도로 회전시킨 상태로 형성함으로서 상기 캐비테이션에 의한 침식을 최소화 할 수 있도록 한 구조이다.According to the present invention, the shape of the lower leading edge portion of the rudder portion 1 based on the propeller shaft core height 2 is directed to a direction similar to the incident current in the rubber portion of the ship. It is a structure to minimize the erosion by the cavitation by forming in a state rotated at an angle of 3 ~ 7 ° in the direction.

첨부도면 도 1은 본 발명을 설명하기 위한 러더부의 측면도이고, 도 2는 본 발명을 설명하기 위한 러더부의 정면도이며, 도 3은 도 2의 A-A선 단면도를 나타낸다.1 is a side view of the rudder portion for explaining the present invention, FIG. 2 is a front view of the rudder portion for explaining the present invention, and FIG. 3 is a cross-sectional view taken along the line A-A of FIG.

본 발명의 선박 러더부(1)의 기본적인 구성들은 종래와 같이 그대로 유지한다. 다만 본 발명은 프로펠러축심높이(2)를 기준으로 러더부(1)의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 3~7°의 각도로 회전시킨 상태로 형성함으로서 상기 캐비테이션에 의한 침식을 최소화 할 수 있도록 하고 있는 것이다.The basic configuration of the ship rudder portion 1 of the present invention is maintained as it is. However, in the present invention, the shape of a part of the lower leading edge of the rudder part 1 based on the propeller shaft core height 2 is 3 to 7 ° in the direction of the starboard in a direction similar to the incident current. By forming in a state rotated at an angle of to be to minimize the erosion by the cavitation.

본 발명은 도 3에서와 같이 프로펠러축심높이(2)를 기준으로 러더부(1)의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 3~7°의 각도로 회전시킨 상태로 형성됨에 따라 캐비테이션에 의한 침식현상에 노출되어 있는 프로펠러축심높이(2) 아래 부분의 리딩엣지 부분이 프로펠러 유입류쪽으로 자연스럽게 회전된 상태의 형상을 갖게 되어 캐비테이션에 의한 침식현상의 영향을 덜 받을 수 있게 되는 것이다.As shown in FIG. 3, the shape of a part of the lower leading edge of the rudder part 1 is directed in a direction similar to the incident current as shown in FIG. 3 in the direction of the starboard. As it is formed to rotate at an angle of 3 to 7 °, the leading edge portion below the propeller shaft height (2) exposed to erosion by cavitation has a shape that is naturally rotated toward the propeller inflow. It will be less susceptible to erosion.

이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였으나 본 발명은 상기한 실시예에 한정되지 아니하며 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이고 그와 같은 변경은 기재된 청구범위 내에 있게 된다.Although the above has been illustrated and described with respect to the preferred embodiment of the present invention, the present invention is not limited to the above-described embodiment without departing from the gist of the present invention claimed in the claims, having ordinary skill in the art to which the present invention pertains. Anyone can make various modifications as well as such changes are within the scope of the appended claims.

본 발명은 프로펠러축심높이를 기준으로 러더부의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 소정의 각도로 회전시킨 상태로 형성함으로서 상기 캐비테이션에 의한 침식을 최소화 할 수 있는 장점이 있다.The present invention forms the shape of a portion of the lower leading edge of the rudder part based on the propeller shaft core height in a state in which it is rotated at a predetermined angle in the direction of the starboard so as to face a direction similar to the incident flow. There is an advantage to minimize the erosion by.

Claims (1)

선박의 러버부에 있어서, 프로펠러축심높이(2)를 기준으로 러더부(1)의 하부 리딩엣지(Leading edge) 일부분의 형상을 입사류와 비슷한 방향을 향하도록 이를 스타보드(Starboard) 방향으로 3~7°의 각도로 회전시킨 상태로 형성하는 것을 특징으로 하는 선박의 캐비테이션 침식 저감을 위한 러더부의 형상.In the rubber part of the ship, the shape of a part of the lower leading edge of the rudder part 1 based on the propeller shaft core height 2 is oriented in a direction similar to the incident flow. Shape of the rudder portion for reducing the cavitation erosion of the ship, characterized in that formed in a state rotated at an angle of ~ 7 °.
KR1020050083507A 2005-09-08 2005-09-08 Rudder shape of a ship KR100681572B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101010850B1 (en) * 2007-11-27 2011-01-26 삼성중공업 주식회사 Asymmetric Rudder for reduced cavitation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101010850B1 (en) * 2007-11-27 2011-01-26 삼성중공업 주식회사 Asymmetric Rudder for reduced cavitation

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