Gulfstream tested 100% SAF in a G800 at 50,000 feet, finding preliminary evidence of reduced particle emissions linked to contrail formation.
The campaign involved a Gulfstream G800 flying at altitudes of up to 50,000 feet while operating on neat SAF. According to the company, it was the first 100% SAF flight for both the G800 and its Rolls-Royce Pearl 700 engine.
A specially modified Gulfstream G700 flew alongside the aircraft as an airborne emissions laboratory. By operating in close formation, researchers were able to measure particulate emissions and atmospheric conditions at altitudes above those typically used by most commercial airliners, but common in business aviation.campaign was conducted with the FAA’s Center of Excellence, known as ASCENT, alongside NASA, the German Aerospace Center, Missouri University of Science and Technology, Aerodyne Research, Rolls-Royce, Montana Renewables and World Fuel Services.
Researchers compared conventional Jet A, low-sulfur Jet A and neat hydroprocessed esters and fatty acids, or HEFA, SAF. Unlike conventional jet fuel, the neat HEFA SAF used during the tests contained no sulfur or aromatics. Preliminary findings indicated a measurable reduction in particulate emissions associated with contrail formation when the G800 operated on the fuel.
Micron boosts US investment to $250B, commences construction of the largest US fab “As aviation continues its work in optimizing environmental efficiencies, Gulfstream is focused on advancing solutions that deliver measurable impact today while shaping a more sustainable future for flight,” said Mark Burns, president at Gulfstream.
“This campaign reflects our strategy to lead with advanced technology, real-world testing and meaningful collaboration to better understand and reduce aviation’s environmental impact,” he continued. Gulfstream’s engineering and flight test teams spent months preparing for the campaign. The company modified the G700’s cabin to accommodate advanced instruments capable of measuring emissions while airborne. Pilots also trained in simulators to carry out tightly controlled formation flights.
These profiles allowed researchers to capture emissions close to the G800 and observe contrail development several miles behind the aircraft.observations, allowing the team to operate safely and efficiently while maintaining the precision needed for accurate data collection,” said Rich Moore, research scientist at NASA. The findings will now be shared with aviation and atmospheric science researchers.
Gulfstream said the data could help improve analytical models, guide future fuel standards and support operational strategies aimed at reducing aviation’s “Partnering with Gulfstream was an excellent opportunity that will help inform and quantify our efforts to mitigate the impacts of persistent contrails,” said Julie Marks, an executive director of the FAA’s Office of Environment and Energy.
“We appreciate the collaboration with industry as the FAA continues to evaluate how SAF may help reduce persistent contrails,” she addedpreviously completed the industry’s first trans-Atlantic flight using SAF in one engine in 2011 and a trans-Atlantic flight powered by 100% SAF in 2023. Its aircraft have now flown more than 3.5 million nautical miles using SAF blends.
Atharva is a full-time content writer with a post-graduate degree in media & amp; entertainment and a graduate degree in electronics & telecommunications. He has written in the sports and technology domains respectively. In his leisure time, Atharva loves learning about digital marketing and watching soccer matches. His main goal behind joining Interesting Engineering is to learn more about how the recent technological advancements are helping human beings on both societal and individual levels in their daily lives.
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