Role of Ferric Oxide Surface Area in Propellant Burn Rate Enhancement (First Step Toward Modeling)

Abstract

Results of efforts to correlate composite propellant burn rate, ammonium perchlorate particle size distribution, and ferric oxide specific surface and level are presented. Results from laboratory-scale motor firings with HTPB- and CTPB-based propellants containing ferric oxides of 3 to 26.4 m squared/gm were used. The oxides had been prepared by precipitation and by calcination of either ferric sulfate or yellow iron oxide. Outcome of the analysis is a quantitative summarization of a mass of data showing how the several oxides perform in terms of their specific surface and level and as a function of oxidizer particle size distribution. Results indicate Fe2O3 specific surface is more significant at high fine-AP levels than at low fine-AP levels. Efforts to use the correlations in combustion modeling have barely begun. Catalysis probably takes place in the primary diffusion flame located at the AP-binder interface.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1975
Accession Number
ADA013855

Entities

People

  • C. H. Burnside

Tags

DTIC Thesaurus Topics

  • Air Force
  • Ammonium Perchlorate
  • Catalysis
  • Chemical Reactions
  • Combustion
  • Composite Propellants
  • Correlation Analysis
  • Equations
  • Experimental Data
  • Iron Oxides
  • Linear Regression Analysis
  • Materials Laboratories
  • Particle Size
  • Propellants
  • Regression Analysis
  • Solid Propellants
  • Solid Rocket Propellants

Readers

  • Combustion science or combustion engineering.
  • Rocket Propulsion.
  • Surface Engineering/Surface Coating Technology.