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Accession Number N20120012909
Title Alternate-Fueled Combustor-Sector Performance.
Publication Date Jul 2012
Media Count 49p
Personal Author A. Lynch C. W. Frayne D. T. Shouse E. Corporan J. S. Stutrud R. C. Hendricks T. Hankins
Abstract Alternate aviation fuels for military or commercial use are required to satisfy MIL-DTL-83133F(2008) or ASTM D 7566 (2010) standards, respectively, and are classified as 'drop-in' fuel replacements. To satisfy legacy issues, blends to 50% alternate fuel with petroleum fuels are certified individually on the basis of processing and assumed to be feedstock agnostic. Adherence to alternate fuels and fuel blends requires 'smart fueling systems' or advanced fuel-flexible systems, including combustors and engines, without significant sacrifice in performance or emissions requirements. This paper provides preliminary performance (Part A) and emissions and particulates (Part B) combustor sector data. The data are for nominal inlet conditions at 225 psia and 800 F (1.551 MPa and 700 K), for synthetic-paraffinic-kerosene- (SPK-) type (Fisher-Tropsch (FT)) fuel and blends with JP-8+100 relative to JP-8+100 as baseline fueling. Assessments are made of the change in combustor efficiency, wall temperatures, emissions, and luminosity with SPK of 0%, 50%, and 100% fueling composition at 3% combustor pressure drop. The performance results (Part A) indicate no quantifiable differences in combustor efficiency, a general trend to lower liner and higher core flow temperatures with increased FT fuel blends. In general, emissions data (Part B) show little differences, but with percent increase in FT-SPK-type fueling, particulate emissions and wall temperatures are less than with baseline JP-8. High-speed photography illustrates both luminosity and combustor dynamic flame characteristics.
Keywords Aircraft fuels
Combustion chambers
Crude oil
Dynamic characteristics
Fuel systems
Jp-8 jet fuel
Kerosene
Mixtures
Particulates
Refueling


 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 85D - Transportation Safety
97K - Fuels
85A - Air Transportation
Corporate Author National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1303
Contract Number N/A

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