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Rolls-Royce tests powerful hybrid-electric propulsion system

Posted on 10 Jun 2021 and read 306 times
Rolls-Royce tests powerful hybrid-electric propulsion systemRolls-Royce has started testing the first elements of the most powerful hybrid-electric aero power and propulsion system at a newly renovated testbed. The tests are part of the 2.5MW Power Generation System 1 (PGS1) demonstrator programme, for future regional aircraft.

The company has begun testing the AE2100 engine element and specialist controls and thermal management system, supported by a system integration generator, at its Testbed 108 in Bristol.

Later this year a fully operational generator and a 3,000-volt power electronics system, currently completing testing at its facility in Trondheim, Norway, will be brought together to start full PGS1 system testing. The generator can be used either for hybrid-electric propulsion systems or as part of a ‘more-electric’ system for larger aircraft.

PGS1 forms an important element of Rolls-Royce’s sustainability strategy, which includes developing innovative electrical power and propulsion systems, as well as further improving gas turbine performance and promoting the use of Sustainable Aviation Fuels (SAFs).

Alan Newby, Rolls-Royce director of aerospace technology and future programmes, said: “This is an important milestone for us all at Rolls-Royce. We are bringing together a system that promises to be truly ground-breaking in the world of aviation.

“We know that in a post Covid-19 world people will want to connect but do so more sustainably. Electrification offers a new way to power short-haul aircraft and we want to be at the forefront of pioneering this technology.

“Our PGS1 tests will lead the way in finding out what this new generation of hybrid-electric propulsion system is capable of delivering. For example, our generator is about the size of a beer keg but it needs to produce enough electricity to power around 2,500 homes and to do so continuously.

“By doing these tests we will be able to validate our digital modelling and find out precisely what is physically and technically possible.”

Once ground-tested, PGS1 will then provide a technology basis for any future hybrid aircraft programme requiring MW power. Both Testbed 108 and PGS1 have been supported by the UK Aerospace Technology Institute’s MegaFlight project, while the 2.5MW electrical generator, motor and power electronics design, make and testing in Trondheim has been supported by the EU Clean Sky 2 programme.

Testbed 108, which had been used as a storage facility since 2008, has been completely renovated to accommodate hybrid-electric testing.