A Norwegian start-up is hoping its small electric-powered ducted-fan engine for unmanned air vehicles (UAVs) can spearhead a move up the weight class into commercial aviation applications.

Pratt & Whitney continues to insist its engine offering for the next generation of single-aisle aircraft will be a traditional ducted fan engine, eschewing the open-fan design of its rival CFM ...

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached to ...