Breakthrough Electric Aircraft Motor from Fraunhofer Could Transform Hybrid Aviation

Beyond raw power, the motor introduces several engineering advancements that enhance both performance and reliability. The use of hairpin windings allows more copper to be packed into the motor, increasing electrical current and overall output. Additionally, an oil spray cooling system replaces traditional air cooling, enabling better heat management and allowing the motor to sustain higher speeds without overheating. The incorporation of ultra-thin steel components further reduces energy losses, improving efficiency during high-speed operation.

Another key feature is the motor’s fault-tolerant design. Built with four independent sections, each with its own inverter and control system, the motor can continue operating even if one section fails. This redundancy is particularly critical in aviation, where system reliability directly impacts safety. The technology is being developed as part of Project AMBER, an initiative aimed at reducing aviation emissions by integrating electric propulsion with hydrogen fuel cells and hybrid systems.