Directional Stability Model Test of the Barge SEACON,

Abstract

The SEACON barge is a self-propelled barge used for sea construction projects and powered by three Voith-Schneider cycloidal propulsors, one forward and two aft, which are used for station keeping maneuvering, and harbor transit. Normally the barge is towed from its homeport to the operations site. In modifying the original YFNB barge, a considerble portion of the after skegs were removed to provide space for the flow of the race from the aft propulsors. While the original YFNB barge was reputed to have good characteristics under tow, after the conversion the SEACON demonstrated a tendency to veer off to one side or the other of the tug course, a characteristic known as directional instability. Giannotti & Buch Associates, Inc., was contracted to investigate the problem by means of model tests and recommend a solution. Contents: Description of Experiments; Directional Stability Tests; Resistance Tests; Lateral Thrusting Capability; Movable Skegs; Stabilization by the Use of a Drogue; Stabilization by Use of Engines; Cost Comparison -- Engines vs. Skegs.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1979
Accession Number
ADA163326

Entities

People

  • Karl A. Stambaugh

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Classification
  • Construction
  • Conversion
  • Costs
  • Directional
  • Displacement
  • Drag
  • Engineering
  • Model Tests
  • Models
  • Outboard
  • Plastic Explosives
  • Security
  • Self Propelled
  • Standards
  • Trip Wires

Readers

  • Marine Hydrodynamics
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers