Joint research flights over Germany

Two planes in flight
Joint research flights over Germany
NASA’s ‘airborne laboratory’ flies close behind the DLR A320 Advanced Technology Research Aircraft (ATRA), flying through the Airbus’ exhaust plume. On board, scientists measure the composition of the exhaust stream and analyse the effects of biofuels like HEFA on the formation of soot particles and ice crystals.
Credit:

DLR/NASA/Friz.

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