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An intelligent gearbox helps RACER safely take flight
An intelligent gearbox helps RACER safely take flight
Developing eco-friendly aircraft cargo doors
Developing eco-friendly aircraft cargo doors
Skyline 31 has landed - discover the research organisations involved in Clean Sky
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First Intermediate Compressor Case for UltraFan™ delivered

19 May 2021

The goal of the Clean Sky 2 Rolls-Royce UltraFan™ engine demonstrator is to improve fuel efficiency by 25% compared to current engines.  

POWER ON for the Regional Flight Test Bed 2 Demonstrator!

10 May 2021

The Regional Flight Test Bed 2 demonstrator aircraft has switched the “power on” and tested how well all the structural parts manufactured and the hydraulic and electrical systems have been installed within the airframe.

Innovation for better cabin air with the Electrical Environmental Control System

29 April 2021

Liebherr-Aerospace’s Electrical Environmental Control System (eECS) aims to provide reliable air supply, thermal control and cabin pressurisation for the crew and passengers on board an aircraft.

Clean Aviation for a Competitive Green Recovery in Europe

23 April 2021

Bold investment is needed to steer aviation firmly on a course towards climate neutrality by 2050.

Highlights 2020

16 April 2021

Clean Sky’s Highlights 2020 report outlines our key achievements during this extraordinary year, from our technology developments to participation figures to the Technology Evaluator.

Putting the pieces together: assembly of RACER begins!

14 April 2021

A milestone has been reached for Clean Sky 2’s RACER demonstrator, which has started its assembly following the arrival of the central fuselage from Romania.

LiBAT develops lightweight battery powerful enough to sustain flight

22 March 2021

Using electricity from renewable energy sources to power airplanes could cut overall greenhouse gas emissions drastically.

Racer’s centre fuselage completed and ready to leave Romania

15 March 2021

Romania’s RoRCraft consortium, formed by INCAS -National Institute for Aerospace Research Elia Cafaroli- and the aerospace company ROMAERO, has finalised the centre fuselage of the Racer demonstrator, which has been presented today in an event held in Bucharest.

Axel Krein on progress in aircraft and engines by 2050 at the Académie de l’air et de l’espace

11 March 2021

Clean Sky 2’s Executive Director Axel Krein spoke at the Académie de l’air et de l’espace (Air and Space Academy)’s event entitled ‘Air transport in crisis and the climate challenge: Towards new paradigms'.

Clean Sky 2 technology progress – contribution to the environmental performance of the next generation of aircraft

09 March 2021

Aernnova Aerospace SA and the Bioengineering and Aerospace Engineering department at the University Carlos III of Madrid (UC3M) are hosting an online conference on Wednesday 24 and Thursday 25 March 2021.

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Visit our online stand

Clean Sky 2 Results Stories

Innovative technologies Clean Sky 2

Technology Evaluator

What is the value of technology developed under Clean Sky?

Large Passenger Aircraft

What is a Large Passenger Aircraft and what are the challenges?

Regional Aircraft

What is a Regional Aircraft and what are the opportunities?

Fast Rotorcraft IADP

Rotorcraft and “fast” rotorcraft - what are the key challenges?


What is the Airframe ITD and what are the challenges?


What is the Engines ITD and what are the challenges?


What are Systems and what are the challenges?

Small Air Transport

What is Small Air Transport and what are the challenges?


What is Eco-Design and what are the challenges?
Facts and figures
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Small and medium-sized enterprises
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Industry members
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Research centres
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Participations in funded projects
(including call 11)
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Scientists & engineers involved
figures grants
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Roadmap to climate-neutral aviation

Skyline 31 - Research Organisations in Clean Sky

June 2021

Technology Evaluator First Global Assessment 2020 Synopsis Report

May 2021

Technology Evaluator First Global Assessment 2020 Technical Report

May 2021
23-24 June

Save the date!: European Research and Innovation Days 2021

videos yt
The cabin experience of the future with Clean Sky's RATIOS project
hydrogen-powered aviation
Hydrogen-powered aviation: preparing for take-off!
less is more
Less is more: Clean Sky's EWIRA project cuts assembly costs by 25%