Accession Number:

ADA224594

Title:

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

Descriptive Note:

Final rept. Apr 1989-Mar 1990

Corporate Author:

ROCKET RESEARCH CO REDMOND WA

Personal Author(s):

Report Date:

1990-07-01

Pagination or Media Count:

120.0

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.

Subject Categories:

  • Liquid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE