AUTOMATIC COMPUTATION OF THE INERTIAL FORCE OF A SHIP WITH OPTIMUM MOTION ON A LIMITED DEPTH

A basic scheme for computing the inertial force of a ship under conditions of nonsteady motion along a limited channel is discussed. The scheme supplements an automatic system for controlling the number of revolutions of the main engines depending on the channel depth, which was constructed earlier by the Institutes of Hydromechanics and Cybernetics AN UkrSSR. Formulas are derived for the inertial force acting on a ship with a sloping channel bottom and for the corresponding correction to the number of revolutions of the engine, from which the corrections for the torque on the propeller shaft and the engine power can be determined. The dynamic equation for the ship on a variable depth is solved, from which the relation between the optimum number of revolutions of the engine and the channel depth and bottom slope is found. The automatic control occurs in correspondence with this relation. Brief descriptions are given for reasonable means for measuring the channel depth and bottom slope with appropriate detectors and for a general schematic of an automatic engine operation control system.

• Authors:
  • Yankovskiy, L I
• Publication Date: 1966

Media Info

• Pagination: p. 92-99
• Serial:
  • Gidromekhanika
  • Issue Number: 2

Subject/Index Terms

• TRT Terms: Channels (Waterways); Inertial forces; Navigation
• Old TRIS Terms: Channel depth measurement; Inertia force determination; Propeller speed; Shallow water effects
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00014914
• Record Type: Publication
• Source Agency: Joint Publications Research Service
• Files: TRIS
• Created Date: May 7 1973 12:00AM