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Greater efficiency, less noise and lower greenhouse gases: this is what the next generation of climate-friendly regional aircraft promises. Within the European OSYRYS consortium, 24 partners from industry and research are working on the development of key electric technologies for safe hybrid-electric flight on short- and medium-haul routes. The research association, coordinated by the French company SAFRAN Electrical & Power, is receiving €40 million in funding from the European Union through the Clean Aviation programme. Ulm University is also participating in the project.
By 2035, the next generation of regional commercial aircraft – with around 50 to 100 seats – is expected to enter service and emit at least 30 per cent less CO₂, in line with the European Union’s objectives. Hybrid-electric aircraft architectures offer a promising route towards greater efficiency and lower greenhouse gas emissions by combining conventional energy systems with electrical onboard power and propulsion technologies. This requires the close coordination of electrical power distribution, energy management and thermal systems. “The challenge is to safely generate, distribute and intelligently control energy on a megawatt scale. From a technical perspective, this is a highly demanding undertaking,” says Pierre-Julien Sonnette of SAFRAN Electrical & Power. The French avionics group is leading the European collaborative project OSYRYS, which is co-funded with 40 million euros through the European Union’s Clean Aviation programme as a public-private partnership.
Over the coming years, OSYRYS will develop and demonstrate innovative on-board power systems designed to ensure safety, scalability and energy efficiency of hybrid-electric systems in the megawatt power range. The project involves 24 partners from industry and academia, including leading European aircraft manufacturers, avionics companies and research institutions such as Ulm University. The focus is on systems and components for electrical power distribution, power electronics, and energy and thermal management. The individual systems are being integrated into a unified aircraft architecture for electrical power and system functions. “OSYRYS brings Europe together and reinforces Europe’s technological leadership. Together, we are working jointly on disruptive innovations and to shape the future of aviation together,” emphasises Jaime Perez De Diego, Project Officer at the Clean Aviation Joint Undertaking (CAJU). The CAJU is a joint undertaking between the EU and the European industry dedicated to developing climate-friendly aviation technologies. The focus is on electric, hybrid-electric and hydrogen-based flight.
Researchers at Ulm University are making a significant contribution to the project. “Our goal is to develop an auxiliary power supply system that reliably converts the generated electricity into the low voltages required for avionics and on-board electronics. This forms a central basis for the interaction of all on-board systems,” explains Dr.-Ing. Christiane Bauer from the Institute of Energy Conversion and Storage at Ulm University. The head of the Ulm-based OSYRYS sub-project has secured 600,000 euros in funding for Ulm. Together with PD Dr.-Ing. Caroline Willich and other researchers at the institute, she is working on implementing the scientific tasks. This includes the development of simulation models that can be seamlessly integrated into the simulation of the entire on-board electrical system. “Our work makes an important contribution to the safe and efficient energy supply of future aircraft,” emphasises Bauer.
The integration of electrical power systems and on-board electrical power networks, together with the development of advanced energy and system management functions, places high demands on the aircraft system architecture. OSYRYS will demonstrate how electrical power can be reliably and efficiently distributed, converted and systematically integrated at system level on board future aircraft. The overall aim of the project is to demonstrate the integrated on-board power systems up to TRL 6. The term ‘technology readiness level’ refers to the current stage of development of a technology. TRL 6 stands for ‘prototype in operational environment’, which in this case means that the system will be tested on the ground under realistic operating conditions. The OSYRYS development team is thus laying the technological foundations for use in future flight demonstrators for the Clean Aviation Roadmap. Specifically, the plan is to test the on-board power system in a twin-engine turboprop regional aircraft from the Franco-Italian manufacturer ATR, an ATR 72-600.
The results of this European collaborative project will strengthen the ability to safely distribute, convert and manage electrical power on board aircraft – regardless of the specific aircraft architecture – and will contribute to Europe’s technological leadership in the development of sustainable aviation systems. “OSYRYS is a milestone in European cooperation in the field of on-board electrical power systems for hybrid-electric aircraft. It is a great honour for us to be involved in this pioneering Clean Aviation project,” said Christiane Bauer. The consortium, led by Safran Electrical & Power, brings together 24 European partners from industry and science, including Airbus, ATR, Collins Aerospace, Liebherr, Thales and German research institutes such as the Fraunhofer Society, Ilmenau University of Technology and Ulm University.
List of OSYRYS project partners
The OSYRYS consortium comprises: SAFRAN Electrical & Power, as well as Safran Aerosystems and Safran Electrical Components, Collins Aerospace, HS Elektronik Systeme and Goodrich Controls Holding Limited, ATR, Airbus, Thales, Liebherr, Prysmian and Draka Fileca SAS, Diehl Aerospace, Calyos, Custom Interconnect, AEROMECHS, Aerospace HV, IRT Saint Exupéry, Fraunhofer IISB, Wrocław University of Science and Technology, Ilmenau University of Technology, the University of Warwick, Ulm University and the Netherlands Aerospace Centre.
The Clean Aviation Programme
The European Commission’s Clean Aviation Programme is a public-private partnership programme aimed at achieving sustainable and climate-neutral aviation. This EU-co-funded research and innovation programme aims to bring new technologies for clean flying to market by 2035, with the goal of reducing climate-damaging gas emissions in aviation by 30 per cent. The programme is designed to secure technological leadership and reinforce international competitiveness. It also aims to safeguard the EU’s technological sovereignty and reduce strategic dependencies.
Dr.-Ing. Christiane Bauer, Institute of Energy Conversion and Storage at Ulm University, email: christiane.bauer@uni-ulm.de
Pierre-Julien Sonnette, SAFRAN Electrical & Power,
E-Mail: pierre-julien.sonnette@safrangroup.com
https://www.safran-group.com/news/launch-osyrys-key-clean-aviation-project-next-... SAFRAN-Pressemitteilung
Dive into OSYRYS – discover the future of regional aviation!
The OSYRYS collaborative project is conducting research into on-board power systems for the next gen ...
Copyright: ATR
Detail of an on-board power supply system from SAFRAN
Copyright: Safran Electrical & Power
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The OSYRYS collaborative project is conducting research into on-board power systems for the next gen ...
Copyright: ATR
Detail of an on-board power supply system from SAFRAN
Copyright: Safran Electrical & Power
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