Mi-17

The Mi-17 is a Russian-made helicopter currently in production at two factories in Kazan and Ulan-Ude. Mi-17 medium twin-turbine multipurpose helicopter is a deep modernization of well-reputed Mi-8 rotorcraft. Its versatility and high performance characteristics made it the most popular helicopter in the world. Over 11,000 Mi-8/Mi-17 helicopters have been produced so far. They are in service in 80 countries now. At present, Kazan Helicopters JSC serially produces three main modifications of Mi-8 rotorcraft, the Mi-172 is a passenger version. It is intended for transportation of 28 passengers. Special VIP-versions for 7-11 passengers are also produced. The MM7-V5 is a transport version. It is intended for cargo transportation inside the cabin and by the external sling. It can also be used for the transportation of 36 service passengers. The Mi-17-1V is a multipurpose helicopter. On the basis of this modification, various versions (military, flying hospital, etc.) can be produced. Mi-17 helicopter modernization leads to a considerable improvement of performance characteristics and to the reduction of operational costs. New VK-2500 high-altitude engines and Safir auxiliary power unit were installed on the helicopter and tested in Tibet. The test results showed that these new components provide: an increase of take-off weight up to 13,500 kg; an increase of rate of climb by 3 m/sec; an increase of service ceiling up to 6,500 m; an increase of hovering ceiling up to 4,500 m; a possibility of starting the engines in the temperature range from -40° to +40°C and at an altitude over 6,000 m. The installation of main rotor blades of an upgraded shape and with swept ends, made of composite materials considerably improves the helicopter's performance characteristics and reduces its operational costs. The X-shaped tail rotor allows widening yaw control margin, increasing service life and reducing the noise.