We’ve been following Karl Porisch, who graduated from Mankato State in 1968 and completed Marine Corps officer and helicopter flight training. The Marines assigned Karl to Okinawa, while his spouse ...

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

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.

Airbus Helicopters has unveiled its light, twin-engined H140 rotorcraft which is expected to enter service in 2028 and aimed ...

Although the helicopter, aptly named 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 quadcopter design ...

Sikorsky, a Lockheed Martin company has successfully validated the advanced control laws to successfully fly a ‘rotor blown ...

Robinson Helicopter introduces the R88, a 10-seat single-engine helicopter designed for transport, utility, and rescue missions.