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Gaseous and Particulate Emissions Results of the NASA Alternative Aviation Fuel Experiment (AAFEX)

[+] Author Affiliations
Dan Bulzan, Kathleen M. Tacina

NASA Glenn Research Center, Cleveland, OH

Bruce Anderson, Andreas Beyersdorf

NASA Langley Research Center, Hampton, VA

Changlie Wey

ASRC Aerospace Corporation, Cleveland, OH

Robert Howard

Arnold Engine Development Center/ATA, Tullahoma, TN

Edward Winstead

Science Systems and Applications, Inc., Hampton, VA

Edwin Corporan

Air Force Research Laboratory - Wright Patterson Air Force Base, Dayton, OH

Matthew J. DeWitt, Chris Klingshirn

University of Dayton Research Institute, Dayton, OH

Scott Herndon, Richard Miake-Lye, Michael Timko, Ezra Wood

Aerodyne Research, Inc., Billerica, MA

David Liscinsky

United Technologies Research Center, East Hartford, CT

Donald Hagen, Prem Lobo, Phillip Whitefield

Missouri University for Science and Technology, Rolla, MO

Paper No. GT2010-23524, pp. 1195-1207; 13 pages
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 2: Combustion, Fuels and Emissions, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4397-0 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME


The Aircraft Alternative Fuels Emissions experiment (AAFEX) was conducted at National Aeronautic and Space Administration (NASA) Dryden Flight Research Center (DFRC) Aircraft Operations Facility (DAOF) in Palmdale, California, during January and February 2009. The purpose was to systematically investigate the effect of alternative fuels on both gas-phase and particle emissions from a CFM56-2C1 engine on NASA’s DC-8 aircraft parked on the ground as functions of engine power, fuel composition, and exhaust plume age. Emissions parameters were measured at 6 engine power settings, ranging from idle to maximum thrust, in samples collected at 1, 30, and 145 meters (m) downstream of the exhaust plane as the aircraft burned three pure fuels and two fuel blends. The fuels included JP-8, two fuels produced using the Fischer-Tropsch process and 50/50 blends by volume of the F-T fuels with JP-8. The 1 m sampling rakes contained multiple gas and particle inlet probes and could also be traversed in order to measure the spatial variation of emissions across the engine exhaust plane. The #2 inboard engine on the left side always burned JP-8 while the #3 inboard right side engine was fueled with the various fuels and fuel blends. In addition, emissions from the Auxiliary Power Unit (APU) were also evaluated with both JP-8 and one pure F-T fuel. Both gaseous and particulate emissions are presented. Results show that the synthetic fuels reduced pollutant emissions while having relatively little effect on engine operation or performance.

Copyright © 2010 by ASME



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