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Helicopters
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" and pteron (πτερόν) ...more
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" and pteron (πτερόν) ...more
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Dr. Talbon was struck by another very important thing. It all hung together. The stories Cheryl told — even though it was upsetting to think people could do stuff like that — they were not disjointed They were not repetitive in terms of "I've heard this before". It was not just she'd someone trying consciously or unconsciously to get attention. really processed them out and was done with them. She didn't come up with them again [after telling the story once and dealing with it]. Once it was done
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― Secret Weapons: How Two Sisters Were Brainwashed to Kill for Their Country
― Secret Weapons: How Two Sisters Were Brainwashed to Kill for Their Country
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Also, truth be told, he wasn't very good at flying a helicopter, despite several lessons. He seemed to lack the important ability to orient himself vertically as well as horizontally, which led to disagreements involving trees.
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― The Raven Boys
― The Raven Boys
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