Density Altitude is a way to describe the ambient air density (the amount of air molecules per volume of air) and relate it to the altitude where that density would be found in a “normal” atmosphere. This sounds pretty technical, but think of it as a way to standardize how we measure air density, specifically for performance calculations.
In racing, the density altitude affects the power output by the engine, its cooling, and also the aerodynamic drag on the car.
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