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Encyclopedia > Flying
This article concerns the process of flying. For other meanings see Flight (disambig).

Flight is the process of flying: either movement through the air by aerodynamically generating lift or aerostatically using buoyancy, or movement beyond earth's atmosphere by spacecraft.


Animal flight

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Animal flight: Herring Gull

The most successful groups of living things that fly are insects, birds, and bats. Each of these groups' wings evolved separately from different structures.


Pterosaurs were a group of flying vertebrates contemporaneous with the dinosaurs.


Bats are the only mammals capable of true flight. However, there are several gliding mammals which are able to glide from tree to tree using fleshy membranes between their limbs: some can travel hundreds of metres in this way with very little loss of height. Flying tree frogs use greatly enlarged webbed feet for a similar purpose, and there are flying lizards which employ their unusually wide, flattened rib-cages to the same end. Flying snakes also use a flattened rib-cage to fly, with a back and forth motion much the same as used on the ground.


Flying fish can glide using enlarged wing-like fins, and have been observed soaring for hundreds of metres using the updraft on the leading edges of waves. It is thought that they evolved this ability to help them escape from underwater predators.


Most birds fly, with some exceptions. The largest birds, the ostrich and the emu, are earthbound, as were the now-extinct dodos, while the non-flying penguins have adapted their wings for use under water. Most small flightless birds are native to small islands, and lead a lifestyle where flight confers little advantage.
The Peregrine Falcon is the fastest animal in the world; its terminal velocity exceeds 320 km/h while diving down on its prey.


Among living animals that fly, the wandering albatross has the greatest wingspan, up to 3.5 metres (11.5 feet), and the trumpeter swan perhaps the greatest weight, 17 kilograms (38 pounds).


Among the millions of species of insects, many do not fly.


Fictional:

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Mechanical flight: Robinson R22 Beta helicopter

Mechanical flight

Flying machines are aircraft, including aeroplanes, helicopters, airships and balloons, and spacecraft.


In the case of an aeroplane flight involves

See also


  Results from FactBites:
 
Fly - Wikipedia, the free encyclopedia (898 words)
The fly life cycle is composed of four stages: egg, larva (commonly known as a maggot), pupa, adult.
In demonology, Beelzebub is referred to as the "Lord of the Flies".
In art, extremely life-like flies have sometimes been depicted in the trompe l'oeil paintings of the 15th century.
  More results at FactBites »

 
 

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