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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
“
"It's okay," Rafe said again. "They've got you."
The helicopter spun, whipping us around. Pain shot through me as Rafe's weight almost wrenched my shoulders out of their sockets, and my hold on his wrists broke. Corey lost his grip on my leg. I heard him shout and Daniel shout and the girls join in, and I kicked, trying to get my leg back up where someone could grab it.
The helicopter tilted again. I started to slide, Daniel sliding with me. And I knew we were going to fall. Rafe, me, Daniel,
...more
”
― The Calling
― The Calling
“
How do you feel about helicopters?"
There was a long pause. "How do you mean? Ethically?"
"As a mode of transportation."
"Faster than camels, but less sustainable.
...more
”
― The Raven Boys
― The Raven Boys
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