Hydroxylammonium Nitrate Compatibility Tests with Various Materials - A Liquid Propellant Study

Abstract

The compatibility of hydroxylammonium nitrate ('HAN'), a key ingredient of liquid gun propellants, with 48 different materials of construction was tested in short-term immersion tests in constant temperature baths with observation and measurement of gas evolution. Test temperatures were 298 k and 338 K (25C and 65C). Test duration was 30 days. Materials tested included metals, plastics, ceramics, coatings, and lubricants. At the end of the test, the gas spaces above the solutions were analyzed for gas composition. Evolution of nitrous oxide and nitrogen was evidence of incipient decomposition in the propellant. The off-loaded HAN solutions were analyzed for leached metals. Based on the rate of gas evolution, weight loss of the specimens, discoloration of the liquid, and amount of metals leached, several materials were identified as being incompatible with 60% HAN solution. Keywords: Liquid gun propellants, Compatibility, Hydroxylammonium nitrate, Liquid propellants.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1990
Accession Number
ADA224594

Entities

People

  • Eckart W. Schmidt

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Body Weight
  • Chemical Analysis
  • Chemical Synthesis
  • Chemistry
  • Databases
  • Liquid Gun Propellants
  • Liquid Propellants
  • Material Degradation Processes
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Nitrogen Oxides
  • Plastic Explosives
  • Pressure Measurement
  • Rocket Oxidizers
  • Test Methods

Readers

  • Rocket Propulsion.
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster