aerodynamics (redirected from aerodynamicists)

aer·o·dy·nam·ics  (âr-d-nmks) n. (used with a sing. verb) The dynamics of bodies moving relative to gases, especially the interaction of moving objects with the atmosphere. aero·dy·nami·cist (--sst) n.

aerodynamics top: high drag on a less aerodynamic shape bottom: low drag on a more aerodynamic shape

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aerodynamics

Noun

the study of how air flows around moving objects

aerodynamic adj
aerodynamicist n

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aerodynamics  (âr-d-nmks)

The study of the movement of air and other gases. Aerodynamics includes the study of the interactions of air with moving objects, such as airplanes, and of the effects of moving air on stationary objects, such as buildings.

A Closer Look The two primary forces in aerodynamics are lift and drag. Lift refers to (usually upward) forces perpendicular to the direction of motion of an object traveling through the air. For example, airplane wings are designed so that their movement through the air creates an area of low pressure above the wing and an area of high pressure beneath it; the pressure difference produces the lift needed for flight. This effect is typical of airfoil design. Drag forces are parallel and opposite to the object's direction of motion and are caused largely by friction. Large wings can create a significant amount of lift, but they do so with the expense of generating a great deal of drag. Spoilers that are extended on airplane wings upon the vehicle's landing exploit this tradeoff by making the wings capable of high lift even at low speeds; low landing speeds then still provide enough lift for a gentle touchdown. Aeronautical engineers need to take into account such factors as the speed and altitude at which their designs will fly (lower air pressures at high altitudes reduce both lift and drag) in order to optimally balance lift and drag in varying conditions.

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aerodynamics

the branch of dynamics that studies the motions of air and other gases, especially with regard to bodies in motion in these substances. See also aviation. — aerodynamic, aerodynamical, adj.

See also: Atmosphere

Thesaurus

Noun

1.

aerodynamics - the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow aeromechanics mechanics - the branch of physics concerned with the motion of bodies in a frame of reference