IMPROVING RUDDER EFFICIENCY

The article refers to a recent paper given by the author to the I. Mar. E. Netherland's Branch describing developments in the improvement of rudder efficiency. The use of a narrow flap added to the trailing edge of the rudder can significantly improve manoeuvrability. The flap has its own angle control system, and on larger units two steering gears are used. This system can be retrofitted to most conventional rudders. The improvement can be further increased by fitting a rotating cylinder to the rudder's leading edge. This produces a Magnus effect and low-pressure lift is retained at much greater rudder angles. Apart from increasing lift, such an arrangement greatly increases drag which improves the checking ability of the vessel. It is claimed that the vessel can then reduce speed and alter course through 180 deg. in a tight turn far more quickly and in less distance than a vessel with a conventional rudder could be stopped.

  • Availability:
  • Corporate Authors:

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • Buhtz, C B
  • Publication Date: 1980

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00323285
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Mar 12 1981 12:00AM