Rolls-Royce electric propulsion system reaches 1 MW in tests
Rolls-Royce’s hybrid aero-electric propulsion and propulsion system provided more than a megawatt of power for the first time in testing.
Power Generation System 1 (PGS1) passed the milestone on the newly refurbished 108 test stand in Bristol, UK. Tests are continuing with the objective of reaching up to 2.5 MW.
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The test program for PGS1 started in June, while the generator and associated power electronics were delivered to Bristol from Norway in July.
PGS1 is a demonstrator that Rolls-Royce engineers are using to prove new propulsion technology for future hybrid-electric regional aircraft. The PGS1 generator could also be used in a “more electric” system for larger aircraft or in future ground applications.
Adam Newman, Chief Aviation Futures Project Engineer at Rolls-Royce, said: âWe’ve had a great start to testing – getting to one megawatt is a big achievement. Now we want to take it a step further and see what we can ultimately achieve.
âOur generator is about the size of a beer keg, but it has already produced enough electricity to continuously power around 1,000 homes. When future hybrid electric aircraft opportunities emerge in the megawatt class and above, we want to be as prepared as possible to offer an out-of-the-box solution. “
In addition to the generator, the PGS1 system integrates an AE2100 engine, specialized controls and a thermal management system.
Testbed 108 and PGS1 were both supported by the UK-funded Institute for Aerospace Technology, while the development of the electric generator, engine and power electronics was carried out in Trondheim, Norway with the support for the EU’s Clean Sky 2 program.