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Rolls-Royce Completes First Ground Test of Hybrid-Electric Propulsion System

Rolls-Royce says it plans to begin flight testing of its developmental hybrid propulsion system in 2021. Courtesy Rolls-Royce
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Key Takeaways:

  • Rolls-Royce has successfully completed ground testing of a hybrid-electric propulsion system for helicopters, utilizing its M250 gas turbine engine, with experimental flights anticipated within two years.
  • The system is designed to operate in three modes (series hybrid, parallel hybrid, and turbo-electric) and aims to enable distributed electric propulsion across various platforms, including eVTOLs and general aviation aircraft.
  • This hybrid M250 system promises enhanced efficiency, reduced noise, and lower emissions, leveraging the M250 engine's established maturity and reliability.
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Rolls-Royce has begun ground testing a hybrid propulsion system using its M250 gas turbine engine for helicopters that the company says will clear the way for experimental flights on aircraft within two years.

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