CURRENT SPEED IN A MAGNETIC ANNULAR SHOCK TUBE

Abstract

A parametric study of the speeds of the current sheet and center-of-gravity of current in a magnetic annular shock tube has been completed. The parameters varied include: (1) the drive current, (2) the polarity of the inner electrodes, (3) the gas pressure, (4) the nature of the gas, (5) the radius of the inner electrode, and (6) the material of the inner electrode. The most interesting result of the investigation was the observation of limiting speeds for the current sheet and center-of-gravity of current of approximately 8 cm/mus and 3 cm/mus, respectively. These speeds were not exceeded even under conditions where the magnetic pressure exceeded the dynamic pressure by a factor of 10. The most probable explanation of the limiting speed is that it is due to the inertial drag of material ablated from the insulator at the driver end of the shock tube.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1963
Accession Number
AD0407294

Entities

People

  • James Keck

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ablation
  • Air Force
  • Boundary Layer
  • Center Of Gravity
  • Detectors
  • Diagrams
  • Dynamic Pressure
  • Equations
  • Heat Energy
  • Lepidoptera
  • Materials
  • Measurement
  • Shock Tubes
  • Ultraviolet Detectors
  • United States
  • Waveforms
  • Waves

Readers

  • Fluid Dynamics.
  • Marine Hydrodynamics
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems