Safran to lead Open Fan demonstration program with European partners under Clean Aviation OFELIA project

April 28, 2023
The Open Fan aims to save 20% of fuel consumption and CO2 emissions compared to today’s narrow body engines.

VILLAROCHE, France, -  Safran Aircraft Engines in Courcouronnes, France, have announced that the company has been chosen to coordinate the demonstration of new Open Fan engine technologies within the frame of the Clean Aviation Joint Undertaking project OFELIA, which stands for Open Fan for Environmental Low Impact of Aviation. The French engine manufacturer will be working with 26 industry European key partners, including Airbus, Avio Aero, GKN Aerospace, as well as research lab such as ONERA and academics from several countries across Europe.

The OFELIA consortium is set to receive 100 million Euros in European funding from Clean Aviation. OFELIA’s objective is to demonstrate the benefits of an open fan architecture in terms of efficiency to address the needs of future generation of short and medium range (SMR) aircraft around 2035. The Open Fan aims to save 20% of fuel consumption and CO2 emissions compared to today’s narrow body engines. Under Clean Aviation’s OFELIA initiative, Safran Aircraft Engines and its partners will mature a set of technologies to TRL 5 for low-pressure systems, high-pressure core and advanced systems including hybridization that will pave the way to ground and flight test demonstrations on an Airbus A380 powered with an Open Fan by the middle of this decade. The consortium also targets to ensure the full compatibility of this disruptive architecture with sustainable aviation fuels (SAF) and hydrogen.

The OFELIA roadmap will encompass more than 20 tests at partners’ facilities. Safran Aircraft Engines, Avio Aero and GKN Aerospace will work together to design and manufacture components for the Open Fan engine demonstrator.  OFELIA will address specific topics of the technology maturation plan for the Open Fan, such as whirl flutter, unducted FAN, propeller and vanes, high speed booster, high speed low pressure turbine aerodynamics, high power compact reduction gearbox, light weight engine components, combustor emissions, high pressure compressor aerodynamics, engine hybridization. In order to be ready for the second phase of Clean Aviation focused on flight tests, Airbus will prepare the preliminary dossier for the Aircraft Flying Test Demonstrator.

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