ACOUSTIC PERFORMANCE OF THE HIGH-SKEW PROPELLER OF M.V. NEDLLOYD ROCHESTER

Full-scale experiments were performed aboard a ro/ro container ship to determine the acoustic performance of a highly skewed propeller. The acoustic source strength and frequency spectrum of the propeller cavitation were determined with two alternative methods. The results of both methods are compared. In addition, vibration levels in the afterbody of the ship and sound pressure levels in accommodation and work spaces were recorded. The data obtained are compared with similar data obtained in 1979 for the same ship equipped with an unskewed propeller. The data show a substantial reduction of the source strength of propeller cavitation--over 10 dB in terms of volume velocity--as a result of the improved propeller design. This applies for 60, 80, 90 and 100 percent of the MCR value. Vibration levels in the afterbody of the ship and sound pressure levels in accommodation and work spaces show a corresponding decrease for low frequencies.

  • Supplemental Notes:
    • Report
  • Corporate Authors:

    TNO Institute

    Delft,   Netherlands 
  • Authors:
    • Absil, F G
    • Bruggeman, J C
  • Publication Date: 1988-1-13

Media Info

  • Features: References;
  • Pagination: Various p.

Subject/Index Terms

Filing Info

  • Accession Number: 00661661
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Report/Paper Numbers: TPD-608.006
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM