The helicopter is a means of transportation by air that rises into the air by the blades is located on the roof. Due to this lifting force is directed straight up and the helicopter can fly up into the air vertically. Modern helicopters to only fly vertically upwards, can curl over the surface, but can also fly sideways. For planting they require only a klochochke land the size of several tens of meters.
Thanks to these features, the helicopters are used both civil and military, for the delivery of goods and conduct of rescue operations.
Few people know that the inventor of helicopter Igor Ivanovich Sikorsky, a native of Russia who migrated to the USA after the revolution. Sikorsky was born in Kiev on 25 may 1889. Already from an early age the boy was interested in the idea that man can fly like a bird. At that time it was a pretty bold idea, the aircraft has not yet appeared. At the age of 12 he designed his first model of a helicopter - it was a pencil with a propeller, able to rise into the air.
Desktop picture with the helicopter you will touch this miracle of modern technology!