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Biofuel Blending Reduces Aircraft Engine Particle Emissions at Cruise ConditionsAviation aerosol emissions have a disproportionately large climatic impact because they are emitted high in the relatively pristine upper troposphere where they can form linear contrails and influence cirrus clouds. Research aircraft from NASA, DLR, and NRC Canada made airborne measurements of gaseous and aerosol composition and contrail microphysical properties behind the NASA DC-8 aircraft at cruise altitudes. The DC-8 CFM-56-2C engines burned traditional medium-sulfur Jet A fuel as well as a low-sulfur Jet A fuel and a 50:50 biofuel blend. Substantial, two-to-three-fold emissions reductions are found for both particle number and mass emissions across the range of cruise thrust operating conditions. These observations provide direct and compelling evidence for the beneficial impacts of biojet fuel blending under real-world conditions.
Document ID
20190027477
Acquisition Source
Langley Research Center
Document Type
Accepted Manuscript (Version with final changes)
Authors
Richard H Moore (Langley Research Center Hampton, Virginia, United States)
Kenneth L Thornhill (Science Systems and Applications (United States) Lanham, Maryland, United States)
Bernadett Weinzierl (German Aerospace Center Cologne, Germany)
Daniel Sauer (German Aerospace Center Cologne, Germany)
Eugenio D'Ascoli (German Aerospace Center Cologne, Germany)
Brian Beaton (Langley Research Center Hampton, Virginia, United States)
Andreas J Beyersdorf (Langley Research Center Hampton, Virginia, United States)
Dan Bulzan (Glenn Research Center Cleveland, Ohio, United States)
Chelsea Corr (Langley Research Center Hampton, Virginia, United States)
Ewan Crosbie (Langley Research Center Hampton, Virginia, United States)
Robert Martin (Langley Research Center Hampton, Virginia, United States)
Dean Riddick (Langley Research Center Hampton, Virginia, United States)
Michael Shook (Langley Research Center Hampton, Virginia, United States)
Gregory Slover (Langley Research Center Hampton, Virginia, United States)
Christiane Voigt (German Aerospace Center Cologne, Germany)
Robert White (Langley Research Center Hampton, Virginia, United States)
Edward Winstead (Science Systems and Applications (United States) Lanham, Maryland, United States)
Richard Yasky (Langley Research Center Hampton, Virginia, United States)
Luke D Ziemba (Langley Research Center Hampton, Virginia, United States)
Anthony Brown (National Research Council Canada Ottawa, Ontario, Canada)
Hans Schlager (German Aerospace Center Cologne, Germany)
Bruce E Anderson (Langley Research Center Hampton, Virginia, United States)
Date Acquired
July 18, 2019
Publication Date
March 16, 2017
Publication Information
Publication: Nature
Publisher: Nature Research
Volume: 543
Issue: 7645
Issue Publication Date: March 16, 2017
ISSN: 0028-0836
e-ISSN: 1476-4687
DOI: 10.1038/nature21420
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NF1676L-25029
Funding Number(s)
PROJECT: ARMD_081876
WBS: 081876.02.07.50.04.04
PROJECT: CAAFER 46FA-JA12
CONTRACT_GRANT: VH-NG-606
CONTRACT_GRANT: ERC 640458
CONTRACT_GRANT: HA W2/W3-060
CONTRACT_GRANT: DFG JU3059/1-1
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.

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