Airspeed
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In aviation, airspeed is the speed of an aircraft relative to the air it is flying through. In contrast, the ground speed is the speed of an aircraft with respect to the surface of the Earth. It is di
Aircraft have pitot tubes for measuring airspeed.
Mach number
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The Mach number, often only Mach, is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound. It is named after Austrian physicis
Airspeed
…water). It is difficult to measure the exact airspeed of the aircraft (true airspeed), but other measures of airspeed, such as indicated airspeed and Mach number give useful information about the capabilities and limitations of airplane performance. The common measures of airspeed are: Indicated airspeed (IAS…
An F/A-18F Super Hornet creating a vapor cone at transonic speed just before reaching the speed of sound.