DSC (Differential Scanning Calorimeter) Stability Test for Liquid Propellants: A Preliminary Report.

Abstract

The use of a Differential Scanning Calorimeter (DSC) for monitoring te stability of HAN based liquid propellants has been investigated. Preliminary experiments have been completed which establish criteria for obtaining reproducible initiation temperatures (T). Careful control of sample size (volume), inert sampling materials and operation at elevated pressure have yielded definitive T(in)S with the lowest standard deviation. Results for 1845 in aluminum pans at 6.9 MPa yielded an average T(in) of 120 C and standard deviation of 4 C, while an average T(in) of 124.8 and standard deviation of 2.4 was obtained for 13 M HAN in the presumably more inert tantalum pans at a somewhat lower pressure (5.2 MPa). Thus, it successfully used to monitor the relative stability of HAN-based propellants. The T(in) values obtained reflect initiation under the DSC conditions with small samples; no extrapolation o the ignition temperature of bulk HAN-based propellant under other conditions is attempted.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1987
Accession Number
ADA187115

Entities

People

  • Pamela J. Duff
  • Robert A. Fifer

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Chemical Engineering
  • Chemistry
  • Decomposition
  • Engineering
  • Fiberglass
  • High Pressure
  • Jet Propulsion
  • Liquid Propellants
  • Materials
  • Mechanical Engineering
  • Military Research
  • Monitoring
  • Pressurization
  • Propellants
  • Reproducibility
  • Standards

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.
  • Thermal Physics or Thermal Science.