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Drag coefficient and aerodynamics
The main component that judges whether a car is aerodynamically efficient is known as the drag coefficient, effectively giving a value to how well a vehicle can cut its way through air.
Drag force on a vehicle acts on the same plane as the direction of motion (horizontally) and increases exponentially as speed increases. A low coefficient is conducive to high top speed and low fuel consumption, while a higher drag coefficient is generally found in cars searching for high cornering speeds influenced by downforce.
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The value game
The drag coefficient for something of the general dimensions of a car lies around the 0.3-0.4 mark.
Car manufacturers have been including drag coefficients within their car’s stats much more in the last decade, coinciding with the transition towards eco-friendly motoring.
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Calculating the drag coefficient
The engineering equation uses:
• FD - A drag force
• ρ - Air density
• V - Airspeed
• A - Frontal area
It shows that a car’s coefficient of drag can be found by analyzing the drag force acting on the car at a given speed. The component within the equation that will h...
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