At the 4th International Forum and Exhibition Unmanned Multipurpose Vehicle Systems - UVS-TECH 2010, held as part of Engineering Technologies 2010 that opens today in Zhukovsky,Russian Helicopters rotorcraft-manufacturing holding company showcases two perspective unmanned helicopters, Korshun and Ka-135. These models are designed under Russian Helicopters program on developing a broad spectrum of vertical take-off and landing UAVs within three categories: long range (over 400 km), medium range (up to 400 km) and close range (up to 100 km). Korshun medium-range unmanned helicopter weighs 500 kg and enjoys the range of 300 km, payload of 150 kg and maximum speed of...