Strain-Gage Vibration Measurements on a Submarine-Towed Antenna Cable

Abstract

As part of the developmental work on a submarine-towed ELF loop antenna, the mechanics of cable vibration have been studied analytically and cable vibration measurements with accelerometets and strain-gages have been carried out from surfaces vessels and from a submarine. The results are that both cable longitudinal strain and cable curvature, over the frequency range of 20 to 200 Hz, are excited by the fluctuating forces on the surface of the cable arising from the cable's own turbulent boundary layer. Neither vibration of the tow point nor the submarine wake are significant sources of mechanical energy. Generalized force spectra are derived from the measured vibration spectra. These then allow the levels of both types of vibration to be calculated for an arbitrary cable towed at an arbitrary speed.

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Document Details

Document Type
Technical Report
Publication Date
May 27, 1975
Accession Number
ADA012287

Entities

People

  • Michael L. Burrows

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Boundary Layer
  • Computers
  • Data Processing
  • Data Reduction
  • Electronics Laboratories
  • Frequency
  • Instrumentation
  • Measurement
  • Mechanical Properties
  • Military Research
  • Navy
  • Numbers
  • Periodic Variations
  • Physical Properties
  • Strain Gages
  • Transverse Waves
  • Turbulent Boundary Layer

Fields of Study

  • Engineering
  • Physics

Readers

  • Electrical Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Structural Dynamics.