Effect of Hydraulic Fluid on Hydroxylammonium Nitrate Based Liquid Propellant Formulations
Abstract
Seven hydrocarbon based hydraulic fluids were evaluated for compatibility with hydroxylammonium nitrate based liquid propellants, LGP 1846 and LGP 1845. The results did not indicate changes in the oxidizer-to-fuel ration or nitric acid concentration due to the presence of hydraulic fluid contamination. Discoloration of the liquid propellant and several hydraulic fluids was observed and ascribed to leeching of dye from the hydraulic fluid and not decomposition. The effect of hydraulic fluid contamination on the ignition and combustion of the HAN-based liquid propellant LGP 1845 was also investigated using a closed bomb. The results did not indicate significant differences in the pressure rise rate or the ignition energy for most of the fluid/propellant combinations. However, slight decreases in the pressure rise rate were noted for two of the hydraulic fluid propellant combinations. The fluid Brayco 783, chosen for the liquid propellant 155-mm program, did not effect the ignition and low pressure combustion of the propellant LGP 1845.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1989
- Accession Number
- ADA208061
Entities
People
- Cris A. Watson
- Madelyn M. Decker
Organizations
- Ballistic Research Laboratory