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Airspeed has to increase beyond the 40–80 knot range, allowing the safe initiation of an autorotation. Thus a safe take-off profile, initiating forward flight from a low hover, involves gaining height as airspeed approaches a safe autorotation speed.
Best range speed – the speed that gives the greatest range for fuel consumed – often identical to V md. [35] V FS: Final segment of a departure with one powerplant failed. [36] V imd: Minimum drag [37] V imp: Minimum power [37] V LLO: Maximum landing light operating speed – for aircraft with retractable landing lights. [9] V LS: Lowest ...
In aviation, equivalent airspeed (EAS) is calibrated airspeed (CAS) corrected for the compressibility of air at a non-trivial Mach number. It is also the airspeed at sea level in the International Standard Atmosphere at which the dynamic pressure is the same as the dynamic pressure at the true airspeed (TAS) and altitude at which the aircraft ...
The maximum range condition is obtained at maximum lift/drag ratio (L/DMAX) The maximal total range is the maximum distance an aircraft can fly between takeoff and landing. Powered aircraft range is limited by the aviation fuel energy storage capacity (chemical or electrical) considering both weight and volume limits. [1]
Airspeed is commonly given in knots (kn). Since 2010, the International Civil Aviation Organization (ICAO) recommends using kilometers per hour (km/h) for airspeed (and meters per second for wind speed on runways), but allows using the de facto standard of knots, and has no set date on when to stop.
Since indicated, as opposed to true, airspeed is a better indicator of margin above the stall, true airspeed is not used for controlling the aircraft; for these purposes the indicated airspeed – IAS or KIAS (knots indicated airspeed) – is used. However, since indicated airspeed only shows true speed through the air at standard sea level ...
An aircraft's indicated airspeed in knots is typically abbreviated KIAS for "Knots-Indicated Air Speed" (vs. KCAS for calibrated airspeed and KTAS for true airspeed). The IAS is an important value for the pilot because it is the indicated speeds which are specified in the aircraft flight manual for such important performance values as the stall ...
Additional speed ranges are specified for other segments of the approach. [1]: Table II-5-1-2 Table II-5-1-2 Approach plates generally include visibility requirements up to category D. [ 1 ] : II-5-1-3 While ICAO specify a top speed of 391 km/h for Category E, there exist no aircraft with an approach speed above this.