MODEL TESTS ON CONTRA-ROTATING PROPELLERS

This paper presents the results of open-water tests with a systematic series of contra-rotating propellers, consisting of a four bladed forward screw and a five bladed aft screw. Based on the open-water test results, contra-rotating propeller systems were designed for a tanker and a cargo liner. Comparative tests have been carried out with the tanker and the cargo liner both equipped with contra-rotating propellers and with a conventional screw. The propulsive efficiencies, the cavitation characteristics, the propeller induced vibratory forces and the stopping abilities are dealt with.

• Corporate Authors:

  Ministry of Defense (Marine), Netherlands

  Torenstraat 172
  The Hague,   Netherlands 
• Authors:
  • van Manen, J D
  • Oosterveld, MWC
• Publication Date: 1969-1

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Cavitation (Mechanics); Cavitation erosion; Contrarotating propellers; Engine efficiency; Open water tests; Propellers; Propulsion
• Old TRIS Terms: Model testing; Propeller characteristics; Propulsive efficiency
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00010208
• Record Type: Publication
• Report/Paper Numbers: 21466/7294/SB
• Files: TRIS
• Created Date: Feb 25 1973 12:00AM