Audible and Ultrasonic Acoustic Emissions from Composite Solid Propellants.

Abstract

Audible and ultrasonic acoustic waves are generated during deflagration of composite solid propellants. The audible waves can be sensed by microphones while special high frequency pressure transducers are required to measure the ultrasonic signals. These acoustic emissions have a potential use both as diagnostics of the combustion and as a means for the study of fundamental burning processes. To date a family of composite HTPB-AP propellants have been tested. Results which show the effects of pressure level, atmosphere in which burned, AP particle size, aluminum addition, and aluminum coating are presented and discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1976
Accession Number
ADA032875

Entities

People

  • James I. Craig
  • Warren C. Strahle
  • William A. Bell

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Acoustic Impedance
  • Acoustic Waves
  • Acoustics
  • Aluminum Coatings
  • Attenuation
  • Burning Rate
  • Combustion
  • Emission Spectra
  • Free Field
  • Frequency
  • Impedance
  • Materials
  • Measurement
  • Particle Size
  • Propellants
  • Solid Propellants

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Rocket Propulsion.