Obscurants for Infrared Countermeasures III

Abstract

This report describes recent results in the search for an effective obscurant material. The goal is to identify a material that has an infrared extinction comparable to or greater than that of brass but without its toxicity or negative environmental impact. Eighteen new materials were selected based on their having promising bulk optical properties as well as favorable particle size distributions or packing densities. Laboratory measurements of extinction were carried Out for the powders using the NRL apparatus in which the materials are entrained in a flowing gas stream such that the mass loading and infrared transmission are determined simultaneously. Carbon black was found to be the best obscurant material of the possible alternatives to brass investigated in this laboratory. Its volume extinction coefficient is lower than that of brass (by a factor of 2-3), but if the relative toxicities are taken into account, it may be a preferable obscurant material.

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Document Details

Document Type
Technical Report
Publication Date
Mar 09, 2001
Accession Number
ADA387724

Entities

People

  • A. P. Baronavski
  • D. A. Steinhurst
  • H. D. Ladouceur
  • Herbert H. Nelson
  • J. C. Owrutsky

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Anti-Ship Missiles
  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • Countermeasures
  • Environment
  • Graphitic Materials
  • Infrared Countermeasures
  • Iron Oxides
  • Materials
  • Measurement
  • Metal Oxides
  • Optical Properties
  • Packing Density
  • Particle Size
  • Refractive Index
  • Titanium Oxides

Readers

  • Atmospheric Remote Sensing.
  • Environmental Engineering.
  • Rocket Propulsion.