The radiative forcing caused by the emissions of jet aircraft is calculated using data from an aircraft performance model. Data from the performance model is needed to calculate the emissions of the aircraft. The sensitivity function and lifetime of the emitted gasses and particles are used to calculate the integrated radiative forcing of the flight of an aircraft. Analysis of a single flight using different fuels and with different cruising altitudes revealed that contrails and aviation induced cirrus cause the largest integrated radiative forcing. This leads to lowest integrated radiative forcing for a cruise altitude of 6 km for both Jet A-1 and Hydrotreated Renewable Jet fuel (HRJ). If contrails and cirrus are omitted the best cruise altitude from the calculated set for Jet A-1 is 11 km while for HRJ 6 km still leads to the lowest integrated radiative forcing.
TU Delft in the Netherlands is performing research into the effects of the use of synthetic kerosene in aircraft. The research program consists of both desk research and tests. In the desk research gas turbine simulations will be combined with payload range performance calculations to show engine effects and fuel consumption changes. Ground and flight tests will be performed to show safe operation on synthetic fuel and to validate the calculations. Measurements during the ground tests will show the changed emissions as a result of the synthetic fuel.
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