A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors . This allows the helicopter to take off and land vertically, to hover , and to fly forward, backward, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL (vertical takeoff and landing) aircraft cannot perform.

The English word helicopter is adapted from the French word hélicoptère , coined by Gustave Ponton d'Amécourt in 1861, which originates from the Greek helix ( ἕλιξ ) "helix, spiral, whirl, convolution" [1] and pteron ( πτερόν ) "wing". [2] [3] [4] [5] English language nicknames for helicopter include "chopper", "copter", "helo", "heli", and "whirlybird".

The earliest references for vertical flight came from China. Since around 400 BC, [8] Chinese children have played with bamboo flying toys (or Chinese top). [9] [10] [11] This bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released. [8] The 4th-century AD Daoist book Baopuzi by Ge Hong ( 抱朴子 "Master who Embraces Simplicity") reportedly describes some of the ideas inherent to rotary wing aircraft. [12]

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A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors . This allows the helicopter to take off and land vertically, to hover , and to fly forward, backward, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL (vertical takeoff and landing) aircraft cannot perform.

The English word helicopter is adapted from the French word hélicoptère , coined by Gustave Ponton d'Amécourt in 1861, which originates from the Greek helix ( ἕλιξ ) "helix, spiral, whirl, convolution" [1] and pteron ( πτερόν ) "wing". [2] [3] [4] [5] English language nicknames for helicopter include "chopper", "copter", "helo", "heli", and "whirlybird".

The earliest references for vertical flight came from China. Since around 400 BC, [8] Chinese children have played with bamboo flying toys (or Chinese top). [9] [10] [11] This bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released. [8] The 4th-century AD Daoist book Baopuzi by Ge Hong ( 抱朴子 "Master who Embraces Simplicity") reportedly describes some of the ideas inherent to rotary wing aircraft. [12]

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Posted by 2018 article

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