Image: Contrails carry clues to more eco-friendly flights

Contrails carry clues to more eco-friendly flights
Credit: NASA/Eddie Winstead

Puffy white exhaust contrails stream from the engines of NASA's DC-8 flying laboratory in this image taken from an HU-25 Falcon flying about 300 feet behind.

NASA researchers have begun a series of flights using the agency's DC-8 to study the effects of alternate on engine performance, emissions and aircraft-generated contrails at altitude.

The DC-8 is using conventional JP-8 jet fuel, or a 50-50 blend of JP-8 and an alternative fuel of hydroprocessed esters and that comes from plants.

More than a dozen instruments mounted on the Falcon jet are characterizing the soot and gases streaming from the DC-8, monitoring the way exhaust plumes change in composition as they mix with air, and investigating the role emissions play in contrail formation.


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NASA begins flight research campaign using alternate jet fuel

Provided by NASA
Citation: Image: Contrails carry clues to more eco-friendly flights (2013, March 12) retrieved 20 August 2019 from https://phys.org/news/2013-03-image-contrails-clues-eco-friendly-flights.html
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Mar 13, 2013
One of the few bright spots after 9/11 was the incredible blue skies when the airliners weren't flying. Living near a large city, the far off whine of a fan jet and a cross-hatch pattern of contrials in the sky is a constant.

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