Design Practice for the Horizontal Fin of a Single Screw-Twin Rudder System

The single-propeller/twin-rudder system composed of single propeller and two high-lift rudders of fish-tail type has been installed on many vessels in Japan. With this system, a ship can be maneuvered at any mode including going astern, hovering, dead slow forwarding and turning by means of various rudder angle combination, with propeller revolution being kept in the forward direction. To improve propulsive efficiency of the single-propeller/twin-rudder system, a pair of reaction fins is attached between two rudders where the propeller slip stream passes. Form, size and setting angle of the fin affect propulsive performance a great deal. A method to determine the setting angle of fin is discussed in this paper. Fundamentally the setting angle is determined by doing model experiment in model basin. As the second method the authors propose to estimate the setting angle based on fluid pattern of stern. A concept of the datum line for evaluation of lift of fin is introduced. A method to determine the representative inflow angle to the fin by the datum line and to determine the optimum setting angle of fin is discussed.

• Record URL:
  • https://doi.org/10.2534/jjasnaoe.16.11
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=Design+Practice+for+the+Horizontal+Fin+of+a+Single+Screw-Twin+Rudder+System&author=T.+Arii&author=K.+Hosogaya&author=K.+Hasegawa&publication_year=2012
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18803717
• Authors:
  • Arii, Toshihiko
  • Hosogaya, Kazuyoshi
  • Hasegawa, Kazuhiko
• Publication Date: 2012

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 11-16
• Serial:
  • Journal of the Japan Society of Naval Architects and Ocean Engineers
  • Volume: 16
  • Issue Number: 0
  • Publisher: Japan Society of Naval Architects and Ocean Engineers
  • ISSN: 1880-3717
  • EISSN: 1881-1760
  • Serial URL: https://www.jstage.jst.go.jp/browse/jjasnaoe/-char/en
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Design practices; Propulsion; Rudders; Ships
• Uncontrolled Terms: Fins (Ships)
• Geographic Terms: Japan
• Subject Areas: Marine Transportation; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01505572
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Jan 27 2014 11:27AM