THE PERFORMANCE OF THE CONTROLLABLE PITCH PROPELLERS ON THE U.S. COAST GUARD POLAR CLASS ICEBREAKERS

After initial strength problems, the 16' diameter, 15MW CP-propellers without ducts have recently been shown to stand up against the loading of an actual extended icemilling in the unrestricted icebreaking operations that were conducted in the Arctic, with its high pressure ridges, as well as in the Antarctic with its solid ice coverage of up to 2.2 m thickness. The paper describes the design features of the 35.8 percent hub-ratio propellers and their implications for exposed icebreaker duty and explains in detail the initial serious problems with the propeller system. Subsequently the final solutions are presented together with supporting tests.

  • Supplemental Notes:
    • Presented at Ice Tech '81 sponsored by the Eastern Canadian Section of SNAME, 16-19 June 1981. Proceedings price to members $30.00; non-members $45.00.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  USA  07306-2907
  • Authors:
    • Langrock, G
    • Wuhrer, W
    • Vassilopoulos, L
  • Publication Date: 1981

Media Info

  • Pagination: n.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00330883
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM