NEAR-WAKE IONIZATION BEHIND A SPHERE IN HYPERSONIC FLIGHT. II. INFLUENCE OF FLIGHT CONDITIONS

Abstract

The effects of flight speed and ambient pressure on integrated wake electron densities are investigated for nonablating spheres 15mm in diameter. The kinetic model and simplified flow-field description developed in Part I are used to calculate integrated electron densities for velocities between 18 and 22 kft/sec and ambient pressures in the range from 3 to 100 torr. Previously reported experimental results obtained with microwave diagnostics on a free- flight range are used to test the validity of the adopted model. The observed dependences upon velocity and pressure are recovered in the calculations within the combined accuracy of theory and experiment.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0476193

Entities

People

  • A. Q. Eschenroeder
  • Tung Chen

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Bodies
  • Chemical Reactions
  • Collisions
  • Convection
  • Diameters
  • Electron Density
  • Electrons
  • Flight
  • Flight Speeds
  • Flow
  • Flow Fields
  • Free Flight
  • Hypersonic Flight
  • Ionization
  • Measurement
  • Trajectories

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Plasma Physics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flight
  • Hypersonics - Hypersonic Flow
  • Microelectronics