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Helicopter


 

A helicopter is an aircraft which is lifted and propelled by one or more horizontal rotors (propellers). Helicopters are classified as rotary-wing aircraft to distinguish them from conventional fixed-wing aircraft. The word helicopter is derived from the Greek words helix (spiral) and pteron (wing). The engine-driven helicopter was invented by the Slovak inventor Jan Bahyl. The first stable, fully-controllable helicopter placed in production was invented by Igor Sikorsky.

See also

◄ Helicopter: Helicopter models and identification
Helicopter: External links ►

~ Table of Content ~

►Introduction
►Applications
►History
►Generating lift
►Alternative layouts
►Controlling flight
►Stability
►Limitations
►Landing
►Hazards of helicopter flight
►Helicopter models and identification
►See also
►External links

 

 

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