At-Sea Hydrodynamic Evaluation of Bare Double-Armored Tow Cables

Abstract

Two double-armored, bare cables were evaluated at-sea to determine the normal drag coefficient and normal loading function. A special device was attached at various positions along the cable to measure the in-plane cable inclination angles. This data collection method allowed a direct determination of the normal hydrodynamic loading using the differential equation that relates the inclination angle to the normal force. The resulting normal loading function differs from the classical sine squared functional relationship usually assumed for bare cables. A normal drag coefficient C sub tau of 1.70, independent of the Reynolds number, was determined for the two cables.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1991
Accession Number
ADA239874

Entities

People

  • Kedric C. Eisenberg
  • Richard K. Knutson

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Calibration
  • Classification
  • Computers
  • Coordinate Systems
  • Differential Equations
  • Equations
  • Flaps (Control Surfaces)
  • Free Stream
  • Fresh Water
  • Instrumentation
  • Load Cells
  • Measurement
  • Notation
  • Ocean Currents
  • Sea Water
  • Test And Evaluation

Readers

  • Aerodynamics/Aeronautics.
  • Calculus or Mathematical Analysis
  • Optical Fiber Sensing and Electromagnetic Propagation.