RTX Corporation announced that its Hybrid-Electric Flight Demonstrator propulsion system for a regional turboprop has successfully run at full power in a ground test cell for the first time, marking a major development milestone. The project combines a Pratt and Whitney Canada thermal engine, a 1-megawatt Collins Aerospace electric motor, and a 200-kilowatt-hour H55 battery system, and aims to demonstrate up to a 30% fuel-efficiency improvement versus today’s most advanced regional turboprops. The full-power results have already been presented via this completed ground test, while the next full-power demonstration is planned for the future in flight on a modified De Havilland Canada Dash 8-100.

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