The effect of copper, MDA, and accelerated aging on jet fuel thermal stability as measured by the gravimetric JFTOT
- Geo-Centers, Inc., Ft. Washington, MD (United States)
- Navy Technology Center for Safety and Survivability, Washington, DC (United States)
Thermally unstable jet fuels pose operational problems. In order to adequately identify such fuels, factors that realistically impact on thermal stability were examined. Evaluation was based on a quantitative method of measuring thermal stability, viz., NRL`s recently developed gravimetric JFTOT. This method gives a quantitative measurement of both the strip deposit and filterables formed. The pertinent factors examined, included the individual and interactive effects of: soluble copper, MDA (metal deactivator), and aging. The latter was accelerated to simulate field conditions of approximately six months aging at ambient temperature and pressure. The results indicate that the individual and interactive effects of copper, MDA, and accelerated aging appear to be fuel dependent. Based on the results, the three test fuels examined (one JP-8 and two JP-5s) were categorized as exhibiting very good, typical, and poor thermal stabilities, respectively. For both the very good and poor thermal stability fuels, the effect of copper in conjunction with accelerated aging did not significantly increase the total thermal deposits of the neat fuels. In contrast, for the typical thermal stability fuel, the combined effects of copper and accelerated aging, did. Furthermore, the addition of MDA prior to aging of the copper-doped, typical stability fuel significantly counteracted the adverse effect of copper and aging. A similar beneficial effect of MDA was not observed for the poor stability fuel. These results focus on the compositional differences among fuels and the need to elucidate these differences (physical and chemical) for a better understanding and prediction of their performance.
- Research Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States). Office of Technical Management
- OSTI ID:
- 45058
- Report Number(s):
- CONF-941022-Vol.1; ON: DE95008873; TRN: 95:003336-0014
- Resource Relation:
- Journal Volume: 9; Journal Issue: 1; Conference: 5. international conference on stability and handling of liquid fuels, Rotterdam (Netherlands), 3-7 Oct 1994; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 5th international conference on stability and handling of liquid fuels. Volume 1; Giles, H.N. [ed.]; PB: 431 p.
- Country of Publication:
- United States
- Language:
- English
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