Liquid Metal-Wetted Niobium Fiber Brushes and Braid Close Clearance Collectors in Magnetic Fields Comparison

Abstract

Niobium fiber brushes wetted with liquid metals offer an alternative to the highly successful braid collector because of the inherent flexibility of the metal fibers. A slipring of niobium fiber brushes wetted with NaK78 was compared directly with an NaK braid collector in a model of a 300-kW homopolar generator. Collector tip velocities varied from zero to 67 m/sec, currents from zero to 4,000 A, and magnetic fields from zero to 1.2 T. Results indicate under all conditions the fiber brush collector was comparable or superior to the braid collector. Current collector, Rectangular channel, Liquid metal flows, Power losses.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1993
Accession Number
ADA269795

Entities

People

  • Neal Sondergaard
  • Patrick Reilly
  • Victor Dilling

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Engineered Resilient Systems
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Accumulators
  • Clearances
  • Electron Microscopes
  • Fibers
  • Generators
  • Liquid Metals
  • Liquids
  • Magnetic Fields
  • Mechanical Engineering
  • Microscopes
  • Model Tests
  • Photographs
  • Scanning Electron Microscopes
  • Slip Rings
  • Standards
  • Surface Warfare

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Electrical Engineering