Performance of the ELF Antenna Water-Flow Tunnel

Abstract

A water-flow tunnel for testing submarine-towed ELF antennas has been built. A year's operating experience with it shows that it can rapidly provide valuable test data attainable otherwise only slowly on submarines. Its thick aluminum shielding creates, within the tunnel, the electromagnetically quiet undersea environment; the pipe turbulence of the flow excites the antenna cable essentially uniformly along its length, as does the boundary layer turbulence of a cable under tow; and, using a bias winding on the antenna, the axial magnetic bias field can be varied to simulate heading changes.

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Document Details

Document Type
Technical Report
Publication Date
May 27, 1975
Accession Number
ADA011947

Entities

People

  • Michael L. Burrows

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Curvature
  • Electrical Properties
  • Electronics Laboratories
  • Frequency
  • Layers
  • Magnetic Fields
  • Materials
  • Measurement
  • Numbers
  • Research Facilities
  • Schematic Diagrams
  • Strain Gages
  • Test Facilities
  • Turbulent Boundary Layer
  • Vibration
  • Water Flow

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Phased Array Antenna Design.
  • Plasma Physics / Magnetohydrodynamics