Led by Gulfstream Aerospace and conducted in close collaboration with the Federal Aviation Administration (FAA), NASA, the German Aerospace Center (DLR), Missouri University of Science & Technology, Rolls Royce, Aerodyne Research, Montana Renewables and World Fuel Services, the campaign was designed to isolate how different fuel compositions influence non-CO2 emissions, an area of increasing focus across science and industry.
To accomplish this, the team compared conventional Jet-A aviation fuel, low-sulfur Jet-A, and neat HEFA (Hydro-processed Esters and Fatty Acids) SAF, which contains no sulfur or aromatics. Preliminary results suggest a significant, measurable reduction in the particulate emissions that contribute to contrail formation when operating on neat SAF.