Also known as Flettner rotor, a rotor sail is a large cylinder mounted upright on a ship's deck and mechanically spun. The ...

Engineers at China State Shipbuilding Corp, the world's largest shipbuilder, have developed one of the world's largest models of rotor sail, aiming to tap into the burgeoning global market for green ...

EcoNavis Solutions is developing a next generation wind-assisted propulsion system designed to enhance the performance and ...

The US Army has formally assigned a common name to its next-generation tiltrotor: the MV-75 will be known as the Cheyenne II, ...