Turning Characteristics of U.S. Coast Guard Icebreaker M-5,
Abstract
The turning characteristics of the Proposed Parent Hull Form M-5 Polar Icebreaker for the U. S. Coast Guard were determined utilizing a radio controlled, free-running model in the University of Michigan Maneuvering Basin. This particular design incorporated a flapped, single, centerline rudder with a triple screw arrangement and appears to provide acceptable turning characteristics for an icebreaker. The model was constructed of wood to a scale of 1 to 48. It was self contained and suited for a radio control of rudder angle and propeller RPM. Control was continuously variable by a set of storage batteries and a fractional horsepower direct current motor. A single motor drove an idler shaft assembly which in turn was mechanically connected to the three propeller shafts. Thus, all three shafts turned in their prescribed manner of rotation at the same speed. The model was self contained and suited for radio control of rudder angle and propeller RPM. The radio control system is a three channel time shared multiplex system employing pulse width and pulse position modulation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1967
- Accession Number
- AD0845565
Entities
People
- J. D. Porricelli
Organizations
- University of Michigan