For Aerodynamics we have terms and definitions in 5 topics. The topics are Automotive, Car Aerodynamics, Explosives, Indycar Racing and NASCAR Racing.

Aerodynamics (Automotive)

The wind resistance of a vehicle's design elements. Aerodynamic vehicles claim to offer increased performance and reduced wind noise while moving. See Coefficient of Drag.

Aerodynamics (Car Aerodynamics)

The study of the motion of gas on objects and the forces created.

Aerodynamics (Explosives)

Aerodynamics is the study of gases in motion. Because the principal application of aerodynamics is the design of airplanes, air is the principal gas with which this science is concerned. Bernoulli's principle, which states that the pressure of a moving gas decreases as its velocity increases, has been used to explain the lift produced by a wing having a curved upper surface and a flat lower surface ( Airfoil). Because the flow is faster across the curved surface than across the plane one, a greater pressure is exerted in the upward direction. Aerodynamics is also concerned with the drag caused by air friction, which is reduced by making the surface area of the craft as small as possible. At speeds close to the speed of sound, or Mach 1 ( mach number), there is also a large, sudden increase of drag, which has been called the sonic, or sound, barrier. Aerodynamics is also used in designing automobile bodies and trains for minimum drag and in computing wind stresses on bridges, buildings, and the like. The wind tunnel is one of the basic experimental tools of the aerodynamicist. Shock wave; Sonic boom.

Aerodynamics (Indycar Racing)

As applied to racing, the study of the interaction between air and the resistance and pressures created by the passage of a moving car through the air.

Aerodynamics (NASCAR Racing)

Refers to the way air flows over the surfaces of a race car, over and under the body or through the engine and radiator. It also includes the wake of turbulent air left behind a car as it travels.

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