Electron Beam Probe for a Low Density Hypersonic Wind Tunnel

Abstract

The purpose of the experiments and calculations reported was to use the electron beam technique for rotational and vibrational temperature and density measurements in the free stream of low density, hypersonic flows of nitrogen. The variation in the flow parameters was obtained through the use of four different nozzles; each was operated at two different conditions. The electron beam was injected through the flow, and the resulting spontaneous emission of light was spectroscopically analyzed. Light intensity measurements were made photoelectrically, and signal amplification and averaging were accomplished with a lock-in amplifier.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1971
Accession Number
AD0727004

Entities

People

  • J. O. Hornkohl
  • J. W.L. Lewis
  • W. D. Williams

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • Electron Beams
  • Electron Guns
  • Electron Tubes
  • Electrons
  • Energy Transfer
  • Equations
  • Flow
  • Free Stream
  • Instrumentation
  • Low Density
  • Measurement
  • Pressure Gages
  • Pressure Measurement
  • Radiation
  • Spectral Lines

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Plasma Physics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Hypersonics
  • Hypersonics - Hypersonic Flight
  • Hypersonics - Hypersonic Flow
  • Microelectronics