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Effects of Additives on the Storage Stability of High-Temperature Fuels

Report Number: AFAPL TR 64-142
Author: Johnston, Robert K.
Author: Anderson, E. L.
Corporate Author: Southwest Research Institute
Laboratory: Air Force Aero Propulsion Laboratory
Date of Publication: 1964-12
Pages: 144
Contract: AF 33(657)-11246
Project: 3048
Task: 304801
AD Number: AD0454998

A study was made of the use of additives to prevent or retard the deterioration of JP-6 fuel thermal stability during storage. Fuel-additive blends were stored at 130 F in sealed 15-gallon steel drums for periods up to 16 weeks. Thermal stability was measured by means of a modified fuel coker developed during this program, using helium pressurization instead of a fuel pump. The standard ASTM-CRC fuel coker and the EppiCRC modified fuel coker were found to be unsuitable for this purpose, owing to contamination of the test sections with pump wear debris. A total of 52 additives were submitted by industry for evaluation, from which 19 were selected by screening tests for inclusion in the hot-room storage program. Three JP-6 fuels were used as the base stocks for additive evaluation. Under storage conditions giving a 100 F decrease in base fuel thermal stability, four additives or combinations of additives were found to be effective in maintaining thermal stability. These results indicate that the use of additives is a feasible approach to solving current problems in this area.

Lockheed Martin Missiles & Fire Control
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