THE STUDY OF THE ORIGIN AND PROPAGATION OF DISTURBANCES IN THE BURNING OF SOLID PROPELLANTS

Abstract

The report deals with the continued investigation of the reflected- pulse method for measuring the normal acoustic admittance of burning propellant surfaces. Work was primarily concerned with problems of instrumentation which must be resolved before meaningful tests with burning propellants can be attempted. A first version of the circuitry for the multi-line recording system was completed. It had been felt for some time that the accuracy of the pulse measurements could be further improved by increasing the number of lines per centimeter on the overlays which are used to provide a vertical scale for reading the oscillograms. A new master grid of 120 lines/cm was obtained, and preliminary tests indicate that it should yield excellent replicas. Problems involving the transducers, (water-cooled microphones with associated amplifiers) were resolved.

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Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1963
Accession Number
AD0609886

Entities

People

  • George M. Muller

Organizations

  • SRI International

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Admittance
  • Air Force
  • Amplitude
  • Base Lines
  • Check Valves
  • Electrical Properties
  • Figure Of Merit
  • Filters
  • Frequency
  • Frequency Response
  • Generators
  • Instrumentation
  • Measurement
  • Microphones
  • Propellants
  • Pulse Generators
  • Solid Propellants

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Systems Analysis and Design