Colloquium: Rick Rosenkrantz (FPP)

12 december 2019 09:30 - Locatie: Lecture Room D, Faculty of Aerospace Engineering, Kluyverweg 1, Delft.

Finding the climate optimal altitude for a selection of aircraft types and mission combinations

The climate impact of aviation is assessed as function of the emission altitude for two individual
aircraft types, the Boeing 787-800 and Boeing 777-300ER. The basis for this research is an
assembly of 2,738 historical trajectories for which the fuel consumption and emissions were
determined by using Piano-X aircraft performance data and weather data from the European Centre
for Medium-Range Weather Forecasts. The resulting emissions served as input for the climate
response model AirClim which calculated the resulting climate response. To analyze the effect of
changes in cruise altitude, the emissions were recalculated for scenarios with relocated cruise
altitude profiles ranging from an upward shift of 2000 ft to a downward shift of 18000 ft with respect
to the original altitude. By shifting cruise altitudes down, the climate impact was found to be reduced
for both aircraft types where the minimal climate impact results from the lowest analyzed cruise
altitude.