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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
“
Da Vinci sketched out the design for a helicopter over 500 years ago. Today, that makes those flying machines as impressive as a Pekin duck wildly flapping its wings and soaring through the skies at a height of just over four feet.
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― Duck Quotes For The Ages. Specifically ages 18-81.
― Duck Quotes For The Ages. Specifically ages 18-81.
“
Tom's Navy SEAL team nicknamed him 'Tailspin', especially after sustaining his knee injury, but Joe likes to call him his 'Lucky Charm' -- saved his tail too many times to count.
...more
”
― Vampire Chimeras
― Vampire Chimeras
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