TYPICAL HULL-RUDDER-PROPELLER INTERFERENCES FOR TWIN-SCREW SHIPS WITH TRANSOM STERN

Twin-screw ships with transom stern have shown large variations in the components of the propulsive coefficient. Some significant parameters in the propeller-hull-rudder interaction problem have been identified and their effects evaluated in both a generalized sense and a specific LHA ship model. The most important conclusions arising from LHA-model experiments and other investigations are: propeller-rudder gap ratio was a major parameter in propulsion efficiency. The variable wake at the propeller was of paramount importance in selecting propeller direction of rotation exerted a dominant effect on the hull efficiency elements of an LHA model, and, for that case, the superiority of inward rotation with regard to propulsive coefficient was explained. (Author)

  • Corporate Authors:

    David Taylor Naval Ship R&D Center

    Bethesda, MD  USA  20084
  • Authors:
    • Beveridge, J L
  • Publication Date: 1975-11

Media Info

  • Pagination: 37 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00134617
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DTNSRDC-3823 R&D Rpt.
  • Files: TRIS
  • Created Date: Jun 9 1976 12:00AM