Flight

Flight is the process by which an object moves, through an atmosphere (especially the air) or beyond it (as in the case of spaceflight), by generating aerodynamic lift, propulsive thrust, aerostatically using buoyancy, or by ballistic movement, without direct support from any surface.

Many things fly, from natural aviators such as birds, bats and insects to human inventions such as missiles, aircraft such as airplanes, helicopters and balloons, to rockets such as spacecraft.

The engineering aspects of flight are studied in aerospace engineering which is subdivided into aeronautics, the study of vehicles that travel through the air, and astronautics, the study of vehicles that travel through space, and in ballistics, the study of the flight of projectiles.

Read more about Flight:  History, Physics, Takeoff and Landing, Flight Safety

Famous quotes containing the word flight:

    No Raven’s wing can stretch the flight so far
    As the torn bandrols of Napoleon’s war.
    Choose then your climate, fix your best abode,
    He’ll make you deserts and he’ll bring you blood.
    How could you fear a dearth? have not mankind,
    Tho slain by millions, millions left behind?
    Has not conscription still the power to weild
    Her annual faulchion o’er the human field?
    A faithful harvester!
    Joel Barlow (1754–1812)

    In all her products, Nature only develops her simplest germs. One would say that it was no great stretch of invention to create birds. The hawk which now takes his flight over the top of the wood was at first, perchance, only a leaf which fluttered in its aisles. From rustling leaves she came in the course of ages to the loftier flight and clear carol of the bird.
    Henry David Thoreau (1817–1862)

    One man’s observation is another man’s closed book or flight of fancy.
    Willard Van Orman Quine (b. 1908)