Density Altitude

Density altitude is the altitude in the standard atmosphere corresponding to a particular value of air density. It is the altitude relative to the standard atmosphere conditions (ISA) where the air density would be equal to the actual air density at the place of observation. Density altitude is used in aviation as it affects the performance of an aircraft. As the density altitude increases, the aircraft's engine produces less power, and the propeller or rotor is less efficient. This can result in longer takeoff distances, reduced climb rates, and decreased aircraft performance. Pilots must take density altitude into account when calculating takeoff and landing distances, as well as when planning flights in high-altitude airports or hot and humid conditions.
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