A THEORY FOR PREDICTION OF THE OFF-DESIGN PERFORMANCE OF KORT NOZZLE DUCTED PROPELLERS

A simple theory is presented for prediction of the characteristic curves for Kort nozzle ducted propellers. The only initial data required are the values of the thrust coefficient, the thrust ratio and the advance coefficient at one central design point for a given ducted propeller. Predicted curves of thrust ratio, advance coefficient and propulsive efficiency, all versus thrust coefficient, compare closely with published experimental test results for N.S.M.B. propeller Ka 4-55 in duct 19a.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0020868X
• Corporate Authors:

  International Periodical Press

  193 Heemraadssingel
  Rotterdam,   Netherlands 
• Authors:
  • Lewis, R I
• Publication Date: 1973-4

Media Info

• Features: References;
• Pagination: p. 122-129
• Serial:
  • International Shipbuilding Progress
  • Volume: 20
  • Issue Number: 224
  • Publisher: IOS Press
  • ISSN: 0020-868X
  • Serial URL: http://www.iospress.nl/journal/international-shipbuilding-progress/

Subject/Index Terms

• TRT Terms: Ducted propellers; Engine efficiency; Nozzles; Open water tests; Propulsion; Shrouded propellers
• Old TRIS Terms: Propulsive efficiency
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00046663
• Record Type: Publication
• Source Agency: International Periodical Press
• Files: TRIS
• Created Date: Sep 18 1973 12:00AM