GE Aerospace achieves milestone with hybrid-electric engine system testing

GE Aerospace has successfully completed ground testing of a megawatt-scale hybrid-electric propulsion system, marking a significant step forward in the development of lower-emission technologies for future commercial aircraft.

The tests were carried out under NASA’s Electrified Powertrain Flight Demonstration (EPFD) programme and represent the first time the company has demonstrated a fully integrated hybrid-electric powertrain operating as a complete system.

Conducted at GE Aerospace’s Peebles Test Operation facility in Ohio, the programme evaluated the performance of the hybrid-electric engine across a range of simulated flight conditions, including taxiing, take-off, climb and cruise operations.

According to the company, the system successfully powered a propeller while also demonstrating the ability to generate and transfer electrical energy back into the onboard battery system during operation.

The achievement builds on more than a decade of research and development into electrified propulsion technologies, which are widely viewed as a key component in the aviation industry's efforts to reduce fuel consumption and cut carbon emissions.

The project forms part of a broader collaboration with NASA aimed at accelerating the development of technologies that could support the next generation of commercial aircraft. Lessons learned from the ground testing programme are expected to inform future flight trials using a modified Saab 340B regional turboprop aircraft.

Arjan Hegeman, GE Aerospace’s Vice President for the Future of Flight, said:

“Step by step, we’re proving hybrid-electric engine technology for next-generation commercial aircraft.

“This latest ground test of a complete hybrid-electric powertrain positions GE Aerospace to have the technologies ready to meet customer needs for greater durability, efficiency, and range of future propulsion systems.”

Hybrid-electric propulsion combines traditional aircraft engines with electric power systems, offering the potential to improve efficiency while reducing fuel burn and emissions. While widespread commercial adoption remains some years away, successful demonstrations such as this are seen as important milestones in advancing the technology towards practical aviation applications.

The completion of the ground test programme moves the project closer to its next phase, with flight testing expected to provide further validation of the technology’s performance in real-world operating conditions.