Tandem propellers, defined as two propellers coaxially mounted to the same shaft, were characterized in open water. The motivation for this work was to determine if the reduced loading per propeller would improve efficiency. Other potential gains such as reduced vibration and decreased cavitation are to be studied later. The experiments were performed at two angular positions and only one axial spacing for direct comparison to a standard parent propeller. The performance shows that improved efficiency is obtainable with tandem propellers. The results also show that changes in performance occur with different angular positions of the propellers. Additional experiments are recommended. (Author)

  • Corporate Authors:

    David Taylor Naval Ship R&D Center

    Ship Performance Department
    Bethesda, MD  United States  20084
  • Authors:
    • Davis, C T
    • Hecker, R
  • Publication Date: 1973-6

Media Info

  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00185501
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DTNSRDC/SPD-530-01 Final Rpt.
  • Files: TRIS
  • Created Date: Dec 29 1979 12:00AM