The true airspeed (TAS; also KTAS, for knots true airspeed) of an aircraft is the speed of the aircraft relative to the air mass through which it is flying...

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...

The airspeed indicator (ASI) or airspeed gauge is a flight instrument indicating the airspeed of an aircraft in kilometres per hour (km/h), knots (kn...

indicated airspeed in knots is typically abbreviated KIAS for "Knots-Indicated Air Speed" (vs. KCAS for calibrated airspeed and KTAS for true airspeed). The...

(15 °C, 1013 hPa, 0% humidity) calibrated airspeed is the same as equivalent airspeed (EAS) and true airspeed (TAS). If there is no wind it is also the...

at the true airspeed (TAS) and altitude at which the aircraft is flying. In low-speed flight, it is the speed which would be shown by an airspeed indicator...

altitude increases, its true airspeed is progressively greater than its indicated airspeed. For example, the indicated airspeed at which an aircraft stalls...

measurements of airspeed: TAS is "knots true airspeed", the airspeed of an aircraft relative to undisturbed air KIAS is "knots indicated airspeed", the speed...

instruments that is most often used in aviation to determine an aircraft's airspeed, Mach number, altitude, and altitude trend. A pitot–static system generally...

aligned with the air temperature and the pressure altitude, allowing the true airspeed (TAS) to be read at the needle. In addition, computer programs emulating...

high-altitude aerospace vehicles use flight Mach number to express a vehicle's true airspeed, but the flow field around a vehicle varies in three dimensions, with...

at the true airspeed at altitude Indicated airspeed (IAS), the airspeed read directly from the airspeed indicator on an aircraft True airspeed (TAS),...

referencing one's indicated airspeed fed by the pressure from a pitot tube. This measurement is converted to an equivalent airspeed based upon known atmospheric...

aircraft pitot-static system flight instrument that shows the ratio of the true airspeed to the speed of sound, a dimensionless quantity called Mach number....

boom Altimeter Annubar Calibrated airspeed Deicing Gyrocompass Kiel probe Piezometer Position error True airspeed Pitot, Henri (1732). "Description d'une...

aircraft ground speed rather than airspeed. Ground speed can be determined by the vector sum of the aircraft's true airspeed and the current wind speed and...

motion of the aircraft through the airmass. It is described by true airspeed and true heading. The wind vector represents the motion of the airmass over...

{m}}_{air}(V_{j}-V)} The speed of the jet V j {\displaystyle V_{j}\;} must exceed the true airspeed of the aircraft V {\displaystyle V\;} if there is to be a net forward...

low indicated airspeed which can be sustained: although the true airspeed at an altitude is typically greater than indicated airspeed (IAS), the difference...

aircraft's airfoils, and the relation between its indicated airspeed (IAS) and its true airspeed (TAS), are also subject to air-density changes. Furthermore...

Va is the freestream fluid velocity in m/s, typically the true airspeed of the aircraft or the water speed of the vessel n is the rotational speed of...

order to enable the computation of static air temperature and hence true airspeed. The relationship between static and total air temperatures is given...

temperature. This enables the computation of static air temperature and true airspeed. In Airbus aircraft the air data computer is combined with attitude...

indicators. The formula for calculating the angle of bank for a specific true airspeed (TAS) in SI units (or other coherent system) is: ϕ = arctan ⁡ v t 2...

pressure. The indicated airspeed (IAS) must be corrected for nonstandard pressure and temperature in order to obtain the true airspeed (TAS). The instrument...

able to provide a Mach number and, if static temperature is known, true airspeed.[citation needed] Some authors in the field of compressible flows use...

the power output from an aircraft's engine and also requires a higher true airspeed before the aircraft can become airborne. Aviators gauge air density...

X-22's successor, the Bell XV-15. Another program requirement was a true airspeed in level flight of at least 525 km/h (326 mph; 283 knots). The X-22...

Aktieselskab, a former Danish telephone company (now part of TDC) Knots true airspeed, the speed of the aircraft relative to the airmass in which it is flying...

power resulted in an increase in optimal cruise from 130 mph (209 km/h) true airspeed (TAS) to 131 mph (211 km/h) TAS. There was no change in the sea level...