Rolls-Royce reveals turbogenerator for eVTOL and hybrid electric aircraft


Aero-engine developer Rolls-Royce has unveiled the turbogenerator it plans to supply for use in eVTOL and hybrid-electric aircraft.

The all-in-one turbogenerator, which includes a new small engine designed for hybrid-electric applications will be able to recharge batteries after take-off or supply power to propellers directly, enabling aircraft to switch between power sources in flight.

The turbogenerator is scalable and will be able to serve a power range of between 500 and 1200kW. The company said it is suitable for use in extending the range of aircraft fueled by SAF (sustainable aviation fuel) and hydrogen combustion – when it becomes available.

The turbogenerator is being developed in Germany, Norway and Hungary. Engineers are currently working on its system integration and ensuring “smart power distribution during flight” said Rolls-Royce.

The project to develop the turbogenerator is being part funded by the German Ministry for Economic Affairs and Climate Action.

Rob Watson, president of Rolls-Royce Electrical said, “We will be the leading provider of all-electric and hybrid-electric power and propulsion systems for advanced air mobility and will scale this technology over time to larger platforms.

“As part of our strategy, we are looking at offering the complete sustainable solution for our customers. This means extending routes that electric flight can support through our turbogenerator technology. This will advance hybrid-electric flight and mean more passengers will be able to travel further on low to net zero emissions aircraft.”

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Ben has worked as a journalist and editor, covering technology, engineering and industry for the last 20 years. Initially writing about subjects from nuclear submarines to autonomous cars to future design and manufacturing technologies, he was editor of a leading UK-based engineering magazine before becoming editor of Aerospace Testing in 2017.

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