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)
Turning Characteristics of U.S. Coast Guard Icebreaker M-5
1967
63 pages
Report
Keine Angabe
Englisch
Polar Star: Big new icebreaker joins coast guard fleet
Tema Archiv | 1976
INSIDE WASHINGTON - Coast Guard icebreaker Polar Sea could get second life
Online Contents | 2012