Veth Propulsion by Twin Disc introduced a new contra-rotating propulsion system designed for passenger vessels and ferries ...

Tribest, a leading provider of wellness appliances designed to make healthy living easy, announces the launch of the Tribest Backspin™— the world’s first Contra-Rotating Impact Blender. · ...

The 19-m (62-ft), 30-kW, contra-rotating vertical-axis turbine is a prototype of a design that could scale to unprecedented size and power. Most wind turbines look like a propeller on a stick – which ...

London-based manufacturerPoduhvat has developed a wind turbine which they claim can produce five times more energy than traditional wind turbines with the same rotor size. The contra-rotating Whetar ...

We interviewed the core team at Norway's World Wide Wind to learn more about its floating, tilting, contra-rotating, double turbine design, which it says can unlock unprecedented scale, power and ...

While the world rushed into the Jet Age, the Soviet Union took a different path. The Tupolev Tu-95 used massive ...

Veth Propulsion by Twin Disc, a global leader in marine propulsion and maneuvering solutions, unveiled a new addition to its portfolio at Maritime Industry, a leading inland shipping tradeshow in the ...

Serious engineering work on contra-rotating open rotors for aircraft propulsion dates back to the late 1940s, particularly as a means to enhance fuel efficiency and extend the endurance of long-range ...

New features for the industry-standard resistance and propulsion software, HydroComp's NavCad. Many contemporary marine vehicles are being outfitted with contra-rotating propellers (CRP), and naval ...

MESSRS. ROTOL AIRSCREWS, LTD., have now completed the development, to the production stage, of a constant speed contra–rotating airscrew, the principle of which was mentioned in NATURE of May 17, 1941 ...