A Laboratory Investigation of Aerosol and Extinction Characteristics for SALTY DOG, NWC 29 and NWC 78 Pyrotechnics

Abstract

Calspan is conducting a limited investigation of the efficiency of hygroscopic aerosols in restricting visibility at subsaturated humidity. The artificial fogs are produced by 'SALTY DOG' and phosphorus pentoxide smoke in Calspan's 590 cubic meter chamber at controlled relative humidities of from 30 to 97 percent. Extinction at both visible and IR wavelengths, aerosol size spectra and pyrotechnic mass yield are compared as functions of humidity. Additionally, results of microscopically measured individual particle growth as a function of humidity and numerical estimates of downwind visibility reduction resulting from the burning of the Salty Dog pyrotechnic are presented.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1980
Accession Number
ADA093098

Entities

People

  • E. J. Mack
  • J. T. Hanley

Organizations

  • Calspan

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chemical Analysis
  • Chemical Properties
  • Crosswinds
  • Detectors
  • Diameters
  • Electron Microscopy
  • Humidity
  • Measurement
  • Particle Size
  • Particles
  • Phase Transformations
  • Physical Properties
  • Scanning Electron Microscopy
  • Standards
  • Transition Temperature
  • Transitions

Fields of Study

  • Environmental science

Readers

  • Aerosol Science/Aerosol Physics
  • Atmospheric Remote Sensing.