Aircraft with Hybrid-Electric Propulsion Reached an Altitude of Nearly 9,200 meters (30,000 Feet)

Aviation Aircraft with Hybrid-Electric Propulsion Reached an Altitude of Nearly 9,200 meters (30,000 Feet)

2026-08-05 From Stefanie Eckardt | Translated by AI 2 min Reading Time

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GE Aerospace, NASA, Beta Technologies, and Boeing successfully demonstrated the feasibility of electrified aircraft engine systems. An aircraft with hybrid-electric propulsion reached an altitude of 30,000 feet, or 9,144 meters. This is the same cruising altitude achieved by kerosene-powered passenger planes. During the tests, the team's longest flight duration in hybrid-electric mode exceeded two hours.

GE Aerospace, in collaboration with NASA, Beta Technologies, and Boeing, conducted the first hybrid-electric flight at nearly 9,200 meters.(Image: GE Aerospace) — GE Aerospace, in collaboration with NASA, Beta Technologies, and Boeing, conducted the first hybrid-electric flight at nearly 9,200 meters.
(Image: GE Aerospace)

Fully electric flying is envisioned in the long term for larger aircraft and longer distances, but is likely initially feasible only for small air taxis or short routes. In the meantime, hybrid drives can achieve significant progress. A hybrid-electric propulsion system combines an electric drivetrain with a conventional gas turbine to optimize power management during various operating phases. Hybrid-electric drives are highly compatible with different fuel types and aircraft engine architectures such as "Open Fan."

Successful Tests

For the project, the development and test teams of the partners focused on thermal management, lower atmospheric pressure, and power density, using flight-ready components that meet higher safety and reliability requirements than conventional test hardware. During the flight tests, the electric drivetrain successfully contributed to propelling the propeller and supplied power to the battery.

The right side of the EPFD aircraft, a Saab 340B, was retrofitted for flight tests with a hybrid-electric system integrated into an inverted nacelle providing additional ventilation. The system includes motor-generators, power converters, and inverters developed by GE Aerospace, controls, gearboxes from Avio Aero, propellers from Dowty, heat exchangers from Unison, torque sensors, engine wiring harnesses, and a CT7 engine. BAE Systems provided the batteries used, and Boeing subsidiary Aurora Flight Sciences supplied the complete nacelle.

Pilots from GE Aerospace and Beta Technologies supported the flight tests in the USA. Beta Technologies acted as the system integrator, and the company’s pilots flew the aircraft to the renowned Farnborough International Air Show in the UK, operating in hybrid-electric mode on every leg of the journey. "This hybrid-electric system improved high-altitude performance and climb capability while creating a flying laboratory whose insights will flow into all future hybrid designs," emphasized Kyle Clark, founder and CEO of Beta. "The GE Aerospace team brought deep expertise in design, testing, and operation. The ground test campaigns and the safe flight tests, culminating in a transatlantic flight, represent the first of many important milestones for hybrid-electric technology," he said confidently.

For the aviation industry, fuel cell propulsion systems can help improve sustainability. However, their use presents certain challenges. (Image:FEV)

The global kerosene market is around 100 billion gallons per year. How much influence the alternative aviation fuel could have on this remains to be seen over the next few years. (Image:industrieblick - stock.adobe.com)

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