CHEMISTRY EFFECTS OF RF ATTENUATION DURING RE-ENTRY

Abstract

The effects of nonequilibrium and alkali contamination in ablation materials on RF signal attenuation are examined. Sample calculations are made on blunt-nosed lifting, blunt-nosed ballistic, and sharp-nosed ballistic, re- entry vehicles. Results indicate that during the early portion of re-entry flight, nonequilibrium air effects are important but that for ablating vehicles, alkali contaminants predominate in the latter portion of re-entry flight. Lifting re-entry vehicles and sharp-nosed ballistic vehicles are more prone to the alkali effects than blunt-nosed ballistic vehicles.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0478040

Entities

People

  • F. A. Vicente

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ablation
  • Abstracts
  • Air Flow
  • Air Force
  • Attenuation
  • Bodies
  • Boundary Layer
  • Chemistry
  • Electron Density
  • Electrons
  • Flow Fields
  • Heat Shields
  • Lifting Bodies
  • Losses
  • Materials
  • Space Systems
  • Trajectories

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Plasma Physics.