Fuel composition influence on deposition in endothermic fuels

Tim Edwards, Matthew J. DeWitt, Linda Shafer, David Brooks, He Huang, Sean P. Bagley, Jörge O. Oña, Mary J. Wornat

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Citations (Scopus)

Abstract

The reactivity and deposition characteristics of a specification jet fuel (Jet A-1) and synthetic jet fuel produced via the Fischer-Tropsch (F-T) process were investigated under supercritical pyrolytic conditions. The latter fuel was comprised solely of straight-chain and branched paraffins. It was found that the F-T fuel was significantly more reactive and more prone to deposit formation than the Jet A-1. These results for the F-T fuel were attributed to the lack of hydrogen-donor capacity and high kinetic chain length. Overall, the decomposition pathways were consistent with free radical pyrolysis at elevated pressures and moderate temperatures. Analytical measurements support the hypothesis that cyclic unsaturates and polycyclic aromatic hydrocarbons (PAH) are formed as intermediates of the deposition process under these reaction conditions. Following initial thermal cracking, the formation of larger PAHs and deposits occur via addition of low molecular weight hydrocarbons and PAH-PAH reactions.

Original languageEnglish
Title of host publicationA Collection of Technical Papers - 14th AIAA/AHI International Space Planes and Hypersonics Systems Technologies Conference
Pages645-657
Number of pages13
Publication statusPublished - Dec 1 2006
Event14th AIAA/AHI International Space Planes and Hypersonics Systems Technologies Conference - Canberra, Australia
Duration: Nov 6 2006Nov 9 2006

Publication series

NameA Collection of Technical Papers - 14th AIAA/AHI International Space Planes and Hypersonic Systems and Technologies Conference
Volume1

Other

Other14th AIAA/AHI International Space Planes and Hypersonics Systems Technologies Conference
CountryAustralia
CityCanberra
Period11/6/0611/9/06

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Edwards, T., DeWitt, M. J., Shafer, L., Brooks, D., Huang, H., Bagley, S. P., Oña, J. O., & Wornat, M. J. (2006). Fuel composition influence on deposition in endothermic fuels. In A Collection of Technical Papers - 14th AIAA/AHI International Space Planes and Hypersonics Systems Technologies Conference (pp. 645-657). (A Collection of Technical Papers - 14th AIAA/AHI International Space Planes and Hypersonic Systems and Technologies Conference; Vol. 1).