The helicopter is an aircraft propelled by an engine. It consists of a set of rotating wings , located at the top of the device. In s.XV, Leonardo da Vinci designed a machine with the objective of get a vertical flight. Years later, with the development of technical and scientific knowledge, new designs were developed to achieve this. It was not until 1906 that Jacques and Louis Breguet began experimenting with propellers for helicopters and in 1907 built the Giropla No. 1, he got up the flight with a pilot 0.6 feet for a minute. The same year the French inventor Paul Cornu designed and built a helicopter that was stable. In November 1907 it took off, manned by its inventor, 0.3 m for 20 seconds. He made several more flights but eventually abandoned the project.Uses of helicopters:
- Aerial ambulance.
- Rescue operations.
- Help for firefighters.
- Attack helicopters.
- Load helicopters.
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