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Leonardo based the design of the flapping wing on birds' wings and a faulty hypothesis.
The aim of this extraordinarily complex study was to mimic the different phases of the flight of birds.
The mechanical wing is one of the masterpieces among Leonardo's sketches related to aviation.
The design for the armoured car features the most important military requirements: reliability, portability and great firepower.
Leonardo was not only a master artist, but also an accomplished military engineer.
Leonardo also designed a wide variety of artillery weapons.
Leonardo's creative legacy also includes several projects related to bridges. This unusual swing bridge allowed for undisturbed water traffic.
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
The Apache attack helicopter, named after an American Indian tribe, was developed for the United States Army.
The Canadian helicopter is one of the most widely used helicopters in the world.