The twin prop-rotor prototype, weighing 115lb and powered by batteries, offers stability across all flight regimes.

Based in Munich, motor producer DeepDrive partnered with Conti to develop a compact wheel hub drive that is efficient, ...

Following is a transcript of the video. This helicopter has dual-crossing rotors for increased precision The K-MAX uses a unique double rotor system where the two rotors cross each other.

Orbis offers novel options for dialing in the torque, cost, and performance of hub-mounted motors to suit any electric car or plug-in hybrid.

Source: NASA/JPL The most striking difference between Ingenuity and a more traditional multicopter is the choice to make it a dual-rotor design. There would have been no way to go with a ...