Description:

A helicopter is an aircraft heavier than air that is supported and propelled by one or more horizontal rotors, each consisting of two or more blades. Helicopters are classified as rotary wing aircraft to distinguish them from fixed-wing aircraft because the helicopter blades create lift with rotating around a vertical axis. The word helicopters derives from the French helicopter, coined by the aviation pioneer Gustave Ponton Amécourt in 1863 from the Greek words helix / Helike - (propeller) and pteron (wing).

Type

free

ID

44670