Observers noted how—even without SAF—the CFM Leap-1B engines of the Boeing 737-10 ecoDemonstrator produced fewer contrails at the same altitude as NASA’s DC-8 powered by older-generation CFM56-2C powerplants.
Credit: Ryan Coe/Boeing
Trailing 3 nm behind a Boeing 737-10 at Mach 0.78 and 36,000 ft., the flight crew of NASA’s Douglas DC-8 airborne science lab is laser-focused on keeping the aircraft in precisely the right position as a suite of sensors collect air samples. Wisps of the 737’s contrail (condensation trail) flash...
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