"Sergei Mikheyev [the Kamov Design Bureau’s chief designer ... The third scheme is a coaxial rotor helicopter with rigid rotors and an additional pusher propeller called the propulsion propeller.

MOSCOW, May 16. /TASS/. The Kamov design bureau is developing a new coaxial helicopter for defense missions to fly at a speed of over 500 km/hr, Director of the Aviation Industry Department at ...

coaxial rotors mounted one above the other. The Russians have repeatedly emphasised the innovative crew evacuation system implemented in this helicopter. Both crew members sit in ejection seats ...