STUDY OF A TRACER METHOD FOR SOLID PROPELLANTS

Abstract

A photometric method for determining local burning rates in solid propellant motors is described. Metallic salt-polymer mixtures (tracers) are inserted in known locations in the motor. Resonant radiation from the vaporized metal provides light in the motor exhaust. Spectrographic time resolution of these pulses and the known distances between deposits in the grain yield the burning rates. Preliminary strand experiments are used to estimate burning rates of tracer and propellant under engine conditions. These values are introduced in an expression relating accuracy of photometric burning rate to tracer thickness, separation between tracer deposits, and tracer and propellant burning rates. Tracer thickness and separation in the test engine for a desired accuracy are thus defined. Engine burning rates reproducible to = 7% for a one centimeter separation were easily obtained.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1963
Accession Number
AD0405479

Entities

People

  • David Fleischer

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Ammonium Perchlorate
  • Background Radiation
  • Burning Rate
  • Combustion
  • Contracts
  • Data Reduction
  • Detection
  • Elements
  • Geometry
  • Materials
  • Materials Laboratories
  • Measurement
  • Perchlorates
  • Propellants
  • Radiation

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Rocket Propulsion.