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Further Reading

Ka-90 (Ka-100)

Pusher propellers will be the level-flight propulsion configuration of choice for Russian helicopter manufacturers Mil and Kamov for a new breed of high-speed rotorcraft to fly in the 2015 timeframe. In 2008 both Russian helicopter specialists revealed high-speed helicopter concepts competing for the Rb15 billion ($635 million) government allocation for development of new rotorcraft technologies. Kamov has two concepts - the Ka-90 and Ka-92. Mil is challenging with the Mi-X1 and unpiloted MRVK. A single superior concept is expected to be selected to serve as the base for the creation of production models.

The most radical concept is the Ka-90, described as a "high-speed vehicle of rotorcraft type". Kamov general designer Sergey Mikheyev says the Ka-90 has been a "long evolving" concept of "helicopter at take-off/landing, and airplane in cruise flight". In essence, the Ka-90 is a "variable-geometry" air vehicle with two separate propulsion systems, one for cruise and one for take-off/landing.

Proposed in 1985, it was shelved after the collapse of the Soviet Union. Now dusted off, it is back under work. A scale model revealed at the HeliRussia 2008 show in May provided evidence of the Ka-90 having a turbojet in the rear fuselage for high-speed level flight and retractable rotor for take-off and landing. Presumably, the lift in cruise flight will be generated by a "wing", in this case a huge, specially shaped container above the fuselage to which the rotor blades are retracted after being folded. According to Mikheyev, the Ka-90 is intended to have a cruise speed of 378kt.

On 15 May 2008 the first International Exhibition in Moscow helicopters, «Helirussia 2008». For the first time presented under development E / P of Mil and Kamov. Also attended by other top design firms such as Eurocopter, Agusta, Westland, helicopters MD, and the helicopter Robinson. . The pavilion of the Kamov for the first time presented two models of the ongoing helicopters Ka-90 and Ka-92. This is actually a hybrid helicopter to develop speeds of around 800 km / h. According to the statements of representatives of the Ka-90 single-rotor bearing (single blade) which is activated when cruising - the engine is activated by a certain level and beyond. For the better aerodynamic rotor wrapped in a specially formatted atraktidio in his back, all the while folding motion is proportional system of landing aircraft.