Navy Mobility Fuels Evaluation.
Final rept. 20 Sep 82-20 May 84,
TRW ENERGY DEVELOPMENT GROUP REDONDO BEACH CA CHEMISTRY LAB
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There were three tasks in this program 1 Analytical Chemistry of Sulfur species in JP-5 2 Materials Compatibility 3 Lubricity. A chromatographic process coupled with oxidation and reduction of eluate, was successful in providing samples from which a group of aromatic thiophenes were identified by GCMS. The Materials Compatibility task accomplished quantitative measurements of the degradation of Milspec nitrile rubber, widely used for fuel system seals, in the presence of peroxide formed in JP-5. The vulnerability of nitrile rubber to fuel peroxide was shown to be determined by backbone unsaturation. For the resolution of the lubricity testing problem, it has been demonstrated that the TRWLucas Tester provides reproducible values of the friction factor, a property of the fuel itself, which relates directly to boundary lubrication and gear scoring.