Automotive
A Chinese firm tested out an electric flying taxi in Dubai on Monday, offering a glimpse of futuristic technology that could one day whisk people through cities high above any traffic.
Oct 10, 2022
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Engineering
This summer, NASA plans to launch its next Mars rover, Perseverance, which will carry with it the first aircraft to ever fly on another planet, the Mars Helicopter. As the first of its kind, the Mars Helicopter will carry ...
Apr 21, 2020
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Hi Tech & Innovation
With a whirling buzz from 18 rotors, the pilotless helicopter gently lifted off the ground and soared up into the afternoon sky, the spire of the world's tallest building visible behind it.
Sep 30, 2017
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Energy & Green Tech
(Tech Xplore)—Workhorse, the people behind SureFly, have a dramatic opener on their company site. "After 78 years, the helicopter has been reinvented." It will be available for viewing at the Paris Air Show this month.
Energy & Green Tech
A University of Maryland student team has once again achieved new aviation heights, this time by successfully lifting a helicopter and passenger through the sole use of solar power.
Sep 20, 2016
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A helicopter (informally known as a "chopper") is a type of rotorcraft in which lift and thrust are supplied by one or more engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft would usually not be able to take off or land. The capability to efficiently hover for extended periods of time allows a helicopter to accomplish tasks that fixed-wing aircraft and other forms of vertical takeoff and landing aircraft cannot perform.
The word 'helicopter' is adapted from the French hélicoptère, coined by Gustave de Ponton d'Amecourt in 1861, which originates from the Greek helix/helik- (ἕλιξ) = "twisted, curved" and pteron (πτερόν) = "wing".
Helicopters were developed and built during the first half-century of flight, with the Focke-Wulf Fw 61 being the first operational helicopter in 1936. Some helicopters reached limited production, but it was not until 1942 that a helicopter designed by Igor Sikorsky reached full-scale production, with 131 aircraft built. Though most earlier designs used more than one main rotor, it was the single main rotor with antitorque tail rotor configuration of this design that would come to be recognized worldwide as the helicopter.
This text uses material from Wikipedia, licensed under CC BY-SA
