THE OXIDATION OF JP-8, JET-A, AND THEIR SURROGATES IN THE LOW AND INTERMEDIATE TEMPERATURE REGIME AT ELEVATED PRESSURES

Abstract

Abstract The preignition reactivity behavior of five JP-8 samples, three Jet-A samples, one JP-7 sample, and four JP-8 surrogate mixtures was studied in a pressurized flow reactor in the low and intermediate temperature regime (600–800 K). A strong Negative Temperature Coefficient (NTC) behavior was observed to start near 692 K for all the fuels. No significant differences in the low-temperature oxidation behavior were observed between Jet-A and JP-8, suggesting that the two fuels can be used interchangeably for surrogate development. Two surrogates stood out as the best to mimic the low temperature reactivity of JP-8, the Hex-12 surrogate by Sarofim and coworkers (Eddings et al., 2005 Eddings , E.G. , Yan , S. , Ciro , W. , and Sarofim , A.F. ( 2005 ) Formulation of a surrogate for the simulation of jet fuel pool fires . Combust. Sci. Technol. , 177 ( 4 ), 715 .[Taylor & Francis Online], [Web of Science ®] , [Google Scholar]) and the S1 surrogate by Agosta (2002 Agosta , A. ( 2002 ) Development of a Chemical Surrogate for JP-8 Aviation Fuel Using a Pressurized Flow Reactor. Master of Science Thesis , Drexel University , Philadelphia , PA . [Google Scholar]). The results showed that extreme care must be taken to ensure that the sample used for surrogate development is of average composition and properties, otherwise severe mistuning of the surrogate could occur.