The results of this study have shown that, for the case of a ducted propeller, the intensity of tip vortex which occurs after a blade has passed the top position is larger than that for a non-ducted propeller. The air injected into the duct is effective in preventing cavitation erosion. Through acoustic observation by hydrophone, the efect of air injection on noise was detected at 30, 60 and 90 cu Nm/hr. It is considered that larger air injection would be still more effective. Order from: BSRA as No. 48,761.

  • Supplemental Notes:
    • Proceedings of the 14th International Towing Tank Conference, held Ottawa, September 1975.
  • Corporate Authors:

    National Research Council of Canada

    1200 Montreal Road
    Ottawa, Ontario  Canada  K1A 0R6
  • Authors:
    • OKAMOTO, H
    • Takahei, T
  • Publication Date: 1975

Media Info

  • Pagination: 4 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00180070
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Report/Paper Numbers: Vol. 2 Proceeding
  • Files: TRIS
  • Created Date: Sep 27 1978 12:00AM