Knowledge and understanding of aircraft emissions

Challenge/Domain
Challenge: 
Protecting the environment and the energy supply
Enabler
Enabler: 
Knowledge and understanding of aircraft emissions
Cluster of enablers: 
Aviation climate impact mastering
Capability
Capability: 
Ability to predict propulsion system emissions for conventional and future technologies, and for various fuel compositions
R&I needs: 
Development of engine emission prediction tools
Achievements
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
Key Performance Indicator: 
1) Range of emissions for which predictive capability is available. 2) Level of confidence in predictions (extent of uncertainty)

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