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...

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

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...

(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...

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

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...

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...

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...

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....

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...

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...

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

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...

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

known as total air temperature, to help calculate the aircraft's true airspeed. True airspeed is needed for high altitude navigation, but is not so important...

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

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...

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

{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...

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

(240 mph, 210 kn) at 9000 ft, true airspeed Cruise speed: 365 km/h (227 mph, 197 kn) at 75% power, 9000 ft, true airspeed Stall speed: 78 km/h (48 mph...

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...

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...

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...

test flights, the BV-347 demonstrated a transmission-limited maximum true airspeed of 177 knots (204 mph; 328 km/h), excellent stability and flight characteristics...

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...