GE Aerospace Advances Hybrid Electric Propulsion with Megawatt‑Class Ground Test

A New Milestone in Hybrid Electric Propulsion

GE Aerospace completed a full megawatt‑class hybrid electric engine ground test under NASA’s Electrified Powertrain Flight Demonstration project. The integrated system included motor‑generators, inverters, converters, controllers, and a CT7 turbine engine. Moreover, the test validated complete powertrain behavior rather than isolated components, which marks a major step toward future flight demonstrations in advanced industrial automation and control systems for aviation.

Integrated Powertrain Architecture and Test Scope

The test campaign simulated taxi, takeoff, climb, and cruise phases. GE Aerospace used flight‑grade hardware to ensure reliability and durability. In addition, the hybrid electric powertrain powered the Dowty propeller and generated energy for the BAE Systems battery pack. This integrated approach reflects factory automation principles, where PLC and DCS systems coordinate multiple subsystems to achieve stable operation.

Technology Maturity Through Long‑Term Development

GE Aerospace has spent more than a decade maturing hybrid electric modules. Earlier milestones include a 2016 electric‑propeller test and a 2022 altitude demonstration at 45,000 feet. As a result, the company now demonstrates narrowbody hybrid electric configurations with power injection and transfer. These achievements show how long‑cycle engineering programs resemble industrial automation modernization, where legacy control systems evolve into high‑efficiency architectures.

RISE Program and Open Fan Innovation

The CFM International RISE program supports hybrid electric development through extensive testing of Open Fan engines, compact cores, and electric subsystems. The program targets over 20% fuel‑burn improvement compared to current commercial engines. Therefore, RISE acts as a strategic technology incubator similar to advanced factory automation platforms that integrate new control logic, energy management, and high‑efficiency components.

Hybrid Electric Systems and Future Aircraft Integration

Hybrid electric propulsion combines electric powertrains with gas turbines to optimize energy distribution across flight phases. These systems align with modern automation strategies, where distributed control and intelligent power management improve efficiency. In addition, hybrid electric engines support multiple fuel types and advanced architectures, including Open Fan designs.

Strategic Partnerships and AAM Applications

GE Aerospace partnered with BETA Technologies in 2025 to accelerate hybrid electric turbogenerator development for Advanced Air Mobility. This collaboration mirrors industrial automation ecosystems, where vendors co‑develop modules, communication protocols, and safety frameworks to support next‑generation control systems.

Author’s Technical Commentary

Hybrid electric propulsion resembles the shift from traditional PLC‑based control to distributed, high‑efficiency DCS architectures. The integration of electric powertrains with turbine engines requires precise synchronization, similar to coordinating high‑speed I/O, redundant controllers, and real‑time diagnostics in factory automation. In my experience, the biggest challenge lies in thermal management and fault‑tolerant control. GE’s use of flightworthy components indicates readiness for commercial‑grade reliability, which is essential for aviation certification.

Application Scenarios and Engineering Use Cases

• Hybrid electric systems for regional aircraft

• Power‑injection modules for turbofan efficiency improvement

• Distributed propulsion for AAM platforms

• High‑voltage power electronics for aerospace control systems

• Integrated turbine‑electric architectures for future DCS‑style aircraft automation

About the Author 

 Liang Zhenyu is an industrial automation specialist with more than 15 years of hands‑on experience in PLC, DCS, TSI, and power protection systems. His work spans system engineering, technical documentation, and solution design for global automation manufacturers.