European Liaison Office of the German Research Organisations

Clean Sky 2 (CS 2) - JTI Aeronautics and Air Transport

The Public-private partnership „Clean Sky” was established at the beginning of the 7th Framework Programme as a Joint Technology Initiative (JTI) and will continue as "Clean Sky 2" from 2014 to 2024. The aim of this JTI is fostering the competitiveness of the European aviation industry as well as the reduction of environmental impacts.

Clean Sky 2 follows the 2020 targets of the European Technology Platform ACARE (ACARE - Advisory Council for Aeronautics Research in Europe) such as reduction of  fuel consumption and CO2 emissions by 50% per passenger kilometre, reduction of NOx emissions by 80% and of perceived noise by 50%. At the same time the aim is to make substantial progress in reducing the environmental impact of the manufacture, maintenance and disposal of aircraft and related products.

Clean Sky 2 is based on the relevant technical areas, the so-called „Integrated Technology Demonstration Systems“ (ITD) and the „Innovative Aircraft Demonstrator Platforms(IAPD):

  • Airframe ITD
  • Engines ITD
  • Systems ITD
  • Fast Rotorcraft IAPD
  • Large Passenger Aircraft IAPD
  • Regional Aircraft IAPD


The JTI is implemented by the „Clean Sky Joint Undertaking (CS JU)“ established as legal entity in Brussels. Members of this public-private partnership are the European Community, represented by the European Commission, and the European aviation industry.

Legal Basis

On July 10th, 2013, the European Commission has published the proposal for the continued implementation of the CS JU for the period 2014-2024. On May 6, 2014 the Council adopted the regulation establishing the Joint Undertaking "Clean Sky 2".

Based on a Strategic Resarch Agenda the JU will implement a ten-year programme for research funding, that will be open for all EU member states and associated states. The total funding will amount to EUR 4.00 bn., of which EUR 1.80 bn. will be from Horizon 2020. EUR 2.19 bn. will be the in kind contribution from the private members (EUR 1,23 bn.) and as own contribution from other organisations participating in the JU's activities (EUR 0,96 bn.).

On July 9th, 2014 the JU has officially been launched. On the day the first call has been published.

Calls for proposals

CS2 usually launches several new calls each year. All documents and information necessary to participate in the call is available on the EU Commission's Participant Portal as well as on the CS 2 JU website.