2020:
1) Recommendation on drop-in fuel composition
2) Research level numerical tools for pollutants formation in combustors
3) Based on experimental results and numerical prediction, elaboration of reliable and simple correlations to approximate emissions from the engine, depending on the technology, to estimate cruise emissions (NOx, particles)
2035:
Full understanding and prediction of emitted species and their concentrations based on sophisticated CFD combustion codes, for all engine types, fuel types, engine operating points and ambient conditions