The images, reportedly captured in April, show a compound helicopter with coaxial main rotors and pusher propeller, which bears similarity to Sikorsky's X2 Technology. Few days after photos emerged of ...

In order to increase flight speed, coaxial high-speed helicopter is getting more and more attention. Due to the complexity of its transmission system, this study mainly deals with dynamics reduction ...

Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. In 1944, at the age of 19, Stanley Hiller, Jr. designed, built, and test flew the first helicopter with coaxial rotors ...

Coaxial rotor systems, featuring paired rotors mounted one above the other and rotating in opposite directions, represent a significant innovation in modern rotorcraft design. This configuration ...

Russian Helicopters is promoting a solution to aid firefighters who face the challenges of the increasingly high rise buildings across the Gulf The Russian all-weather coaxial Ka-32A11BC helicopter is ...