Propulsion Tests in Level Ice on a Model of a 140-ft. WTGB Icebreaker,

Abstract

Results of propulsion tests in level ice on a model of the WTGB 140-ft. Great Lakes icebreaker are presented and compared to available full-scale data. In spite of the difficulties in exactly modeling full-scale conditions, the predictions based on the model test results of the ship performance compared reasonably well to those measured during full-scale trials. Several possible sources of errors are identified. In particular, duplication at the model scale of the ship hull's ice friction coefficient is considered to be critical in determining the ice resistance and the corresponding propulsion characteristics, namely propeller speed, thrust and torque. Keywords: Coast Guard ships; Ship models; Icebreakers; and Model tests.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1985
Accession Number
ADA154075

Entities

People

  • J. C. Tatinclaux

Organizations

  • Cold Regions Research and Engineering Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Coast Guard
  • Coefficients
  • Cold Regions
  • Engineering
  • Engineers
  • Flexural Strength
  • Great Lakes
  • Model Tests
  • Models
  • Propeller Shafts
  • Propellers
  • Resistance
  • Self Propelled
  • Ship Models
  • Ships
  • United States
  • Water

Readers

  • Computational Modeling and Simulation
  • Polar and Arctic Studies
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).