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.
- 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.
Society of Naval Architects and Marine Engineers601 Pavonia Avenue
Jersey City, NJ USA 07306-2907
- Langrock, G
- Wuhrer, W
- Vassilopoulos, L
- Publication Date: 1981
- Pagination: n.p.
- TRT Terms: Controllable pitch propellers; Ice; Icebreakers; Icebreaking; Loads; Performance; Propellers; Vehicle design
- Old TRIS Terms: Ice loads; Propeller design; Propeller ice interaction; Propeller performance
- Subject Areas: Design; Marine Transportation; Vehicles and Equipment;
- Accession Number: 00330883
- Record Type: Publication
- Report/Paper Numbers: Conf Paper
- Files: TRIS
- Created Date: May 21 1981 12:00AM