+Equivalent Airspeed (EAS) is the [airspeed](/wiki/airspeed) at sea level that produces the same dynamic pressure as the true airspeed at any given altitude. It is crucial for [aircraft design](/wiki/aircraft_design) and performance, as it directly relates to aerodynamic stress and lift generation.
+## See also
+- [True Airspeed](/wiki/true_airspeed)
+- [Indicated Airspeed](/wiki/indicated_airspeed)
+- [Mach Number](/wiki/mach_number)