Puffy white exhaust contrails streamed from the engines of NASA's DC-8 flying laboratory in this photo taken from an HU-25 Falcon flying in trail about 300 feet behind the DC-8.
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Mission: Alternative Fuel Effects on Contrails and Cruise Emissions (ACCESS)
Puffy white exhaust contrails streamed from the engines of NASA’s DC-8 flying laboratory in this photo taken from an HU-25 Falcon flying in trail about 300 feet behind the DC-8. Instruments on the Falcon were measuring the chemical contents of the exhaust contrails at varying distances from the DC-8, which was using both standard JP8 jet fuel and a mix of JP-8 and a plant-derived biofuel.› Read News Release 13-06February 28, 2013
NASA / Eddie Winstead