THE MEASUREMENT OF THE TEMPERATURE PROFILES OF BURNING SOLID PROPELLANTS BY MICROTHERMOCOUPLES

Abstract

Studies of the temperature profile in the solid pre-heat zone and the gaseous combustion zone of burning solid propellants have been made. These temperature profiles have been obtained by allowing solid propellant strands to burn past very fine, embedded thermocouples. Techniques have been developed for the routine fabrication and handling of micro-thermocouples made from platinum- platinum 10% rhodium Wollaston wire with .0003 inch or finer diameter. Thermocouples with bead sizes no larger than 15 microns are cast into composite propellants or glued into double base propellants. With the propellant strand burning in cigarette fashion, the thermal wave passes over the thermocouple. The voltage vs. time trace thus obtained permits the determination of the temperature distribution in the combustion wave. Analysis of this curve gives a method for determining the surface temperature of the propellant. Temperature time records for composite and double base propellants have been obtained under a variety of conditions.

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Document Details

Document Type
Technical Report
Publication Date
Sep 23, 1963
Accession Number
AD0422387

Entities

People

  • Alberto J. Sabadell
  • Joseph Wenograd

Organizations

  • Princeton University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ammonium Perchlorate
  • Burning Rate
  • Chemical Reaction Properties
  • Chemical Reactions
  • Combustion
  • Composite Materials
  • Composite Propellants
  • Conductivity
  • Double Base Propellants
  • Exothermic Reactions
  • Materials Laboratories
  • Materials Processing
  • Measurement
  • Propellants
  • Solid Propellants
  • Surface Temperature
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Rocket Propulsion.
  • Surface Engineering/Surface Coating Technology.