The Magnus Effect rotor consists of a cylinder having circular end plates, and is installed in place of the conventional flat rudder. As the vessel moves ahead or astern creating a flow around the cylinder, a turning force at right angles to the direction of travel can be developed by rotating the cylinder in a clockwise or anti-clockwise mode. The magnitude of the turning force is a function of the velocity of the flow and the peripheral speed of the cylinder surface. When these become equal, a low pressure zone develops on the side of the rotor that is traveling in accord with the direction of flow. As the relative speed of the rotor increases, so does the "lift." When the surface velocity becomes four times the flow velocity, the lift to drag ratio is about nine to one. The ratio is less than two to one for most conventional rudders in the "hard over" position. The reveiw of this new steering concept includes performance curves for a 3700 HP towboat and performance characteristics of Magnus vs. a conventional rudder.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    P.O. Box 530
    Bristol, CT  United States  06010
  • Authors:
    • Borg, J L
  • Publication Date: 1980-3

Media Info

  • Pagination: p. 57-60
  • Serial:
    • Marine Engineering/Log
    • Volume: 85
    • Issue Number: 3
    • Publisher: New York: Simmons-Boardman Publishing Corp.
    • ISSN: 0732-5460

Subject/Index Terms

Filing Info

  • Accession Number: 00310874
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 7 1980 12:00AM