Electric motors usually comprise a stator and a rotor, with the latter rotating inside the former. Donut Lab thinks this design is outdated, and a hollowed-out rotor can offer important advantages.

The HECATE project reached TRL 5, demonstrating a hybrid-electric system capable of over 500 kW power output. Collaboration included major European aerospace companies like Safran, Airbus, Leonardo, ...

Retrofitting a portion of the US shipping fleet from internal combustion engines to battery-electric systems could significantly reduce greenhouse gas emissions and be largely cost effective by 2035, ...