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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 h茅licopt猫re, coined by Gustave Ponton d'Am茅court in 1861, which originates from the Greek helix (峒曃晃刮�) "helix, spiral, whirl, convolution" and pteron (蟺蟿蔚蟻蠈谓) ...more
The English word helicopter is adapted from the French word h茅licopt猫re, coined by Gustave Ponton d'Am茅court in 1861, which originates from the Greek helix (峒曃晃刮�) "helix, spiral, whirl, convolution" and pteron (蟺蟿蔚蟻蠈谓) ...more
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You can't imagine what the interior of sixteen or eighteen cubic feet is like with all of these people screaming, and yelling, and talking, and howling. [...] Not to mention the radio squealing. And the bullets flying. And explosions going up. You just can't imagine the chaos that goes through your head. And it requires immense concentration, and effort, to focus on what you job is. [Tom Kelley, Vietnam Medic from December 1967-December 1968, speaking about events inside the medevac helicopters]
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― Boots on the Ground: America's War in Vietnam
― Boots on the Ground: America's War in Vietnam
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He didn't like to see either of the women in his family disappointed; it ruined perfectly good meals.
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― The Raven Boys
― The Raven Boys
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