Cupping a propeller means to deform its blades near the trailing edge, thus increasing the profile camber. Gawn-Burrill propellers with z = 3, P/D varied from 0.8 to 1.6, AE/AO = 0.5, medium cupped, were tested in open water condition. Cavitation tests were performed for P/D = 1.0 The cupped propeller performance could be predicted from the Newton-Rader series by the virtual pitch concept with good accuracy both in cavitating and non-cavitating conditions. Suitable cupping could increase the effective pitch ratio and improve the cavitation performance, however with 5% less efficiency compared to the Newton-Rader series in non-cavitating condition. A numerical method for calculating the virtual pitch of cupped propeller is presented.

  • Supplemental Notes:
    • Ship Technology Research, v 42 n 4, Oct 1995, p 186 [7 p, 7 ref, 4 tab, 21 fig]
  • Authors:
    • Hwang
    • J-L
    • Tsai
    • J-F
    • Li
    • C-Y
  • Publication Date: 1995


  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00718489
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM