Biplab Das 
GE Aerospace is embarking on a groundbreaking project to develop a hybrid electric engine for next-generation narrow-body jets. This ambitious initiative aims to significantly reduce the aviation industry’s carbon footprint, particularly from single-aisle jets, which contribute to half of the sector’s emissions.
While hybrid cars have become commonplace on the roads, adapting this technology to aviation presents unique challenges. Hybrid engines in aircraft will utilise multiple energy sources during flight. Airbus estimates that combining jet fuel or sustainable aviation fuels with electricity could reduce fuel consumption by up to 5% compared to conventional flights.
Collaborating with NASA for advanced testing
GE Aerospace is collaborating with NASA on an innovative project to integrate electric motors or generators into high-bypass turbofans. These components will provide supplementary power during various phases of operation. Initial tests of the hybrid components and a baseline test of the engine have been completed, marking a significant milestone. The next phase will involve testing the components and the engine together.
Towards net-zero emissions by 2050
The global aviation industry has set an ambitious goal of achieving net-zero emissions by 2050. However, reaching this target is challenging due to the unproven nature of technologies such as electric and hydrogen-powered aircraft. Currently, the aviation industry accounts for about 2% of global emissions. Therefore, developing more fuel-efficient engines is crucial for reducing the industry’s environmental impact.
Challenges and criticisms
Despite these efforts, environmental critics argue that the industry’s net-zero targets are unrealistic. They believe that significant reductions in global flying are necessary to achieve these goals. Nevertheless, GE Aerospace is committed to pursuing multiple projects to enhance fuel efficiency and reduce emissions.
GE’s hybrid engine program and other initiatives
The hybrid engine program is one of several projects GE Aerospace is advancing to develop more fuel-efficient technology. In partnership with France’s Safran, GE is testing the building blocks for an open-bladed jet engine. This next-generation engine for medium-haul jets is expected to reduce fuel use and emissions by 20% by the middle of the next decade.
Competing innovations in hybrid technology
GE’s rival, RTX, is also working on a hybrid-electric technology demonstrator. This project combines a thermal engine with an electric motor, aiming to improve fuel efficiency by 30%. Such advancements highlight the competitive landscape of the aerospace industry, with multiple players striving to develop greener technologies.
The road ahead
The development of hybrid electric engines represents a significant step forward in the quest to decarbonise aviation. While the technology is still in the testing phase, its successful implementation could revolutionise air travel, akin to the impact hybrid cars have had on the automotive industry. As GE Aerospace and its partners continue to innovate, the future of sustainable aviation looks promising.
GE Aerospace’s hybrid electric engine project, in collaboration with NASA and Safran, is poised to make a substantial impact on the aviation industry’s efforts to reduce carbon emissions. By pioneering new technologies and enhancing fuel efficiency, GE is leading the charge towards a more sustainable future for air travel. With ongoing tests and developments, the aviation industry is on the brink of a transformative era in environmental responsibility.
