1.3.2: Clean Sky

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Clean Sky is a Joint Technology Initiative (JTI) that aims at developing a mature breakthrough clean technologies for air transport. By accelerating their deployment, the JTI will contribute to Europe’s strategic environmental and social priorities, and simultaneously promote competitiveness and sustainable economic growth.

Joint Technology Initiatives are specific large scale research projects created by the European Commission within the 7th Framework Programme (FP7) in order to allow the achievement of ambitious and complex research goals, set up as a public-private partnership between the European Commission and the European aeronautical industry.

Clean Sky will speed up technological breakthrough developments and shorten the time to market for new and cleaner solutions tested on full scale demonstrators, thus contributing significantly to reducing the environmental footprint of aviation (i.e. emissions and noise reduction but also green life cycle) for our future generations. The purpose of Clean Sky is to demonstrate and validate the technology breakthroughs that are necessary to make major steps towards the environmental goals set by ACARE and to be reached in 2020 when compared to 2000 levels:

50% reduction of CO₂ emissions;
80% reduction of NO_x emissions;
50% reduction of external noise; and
a green product life cycle.

Clean Sky JTI is articulated around a series of the integrated technology demonstrators:

Eco Design.
Smart Fixed Wing Aircraft.
Green Regional Aircraft.
Green Rotorcraft.
Systems for Green Operations.
Sustainable and Green Engines.

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Figure 1.3: Contributors to reducing emissions. Adapted from Clean Sky JTI.

Therefore, the reduction in fuel burn and CO₂ will require contributions from new technologies in aircraft design (engines, airframe materials, and aerodynamics), alternative fuels (bio fuels), and improved ATM and operational efficiency (mission and trajectory management). See Figure 1.3. ACARE has identified the main contributors to achieving the above targets. The predicted contributions to the 50% CO₂ emissions reduction target are: efficient aircraft: 20-25%; efficient engines: 15-20%; improved air traffic management: 5-10%; bio fuels: 45-60%.