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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 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.
Indicated airspeed is a better measure of power required and lift available than true airspeed. Therefore, IAS is used for controlling the aircraft during taxiing, takeoff, climb, descent, approach or landing. Target speeds for best rate of climb, best range, and best endurance are given in terms of indicated 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 ...
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 ...
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 airspeed indicator for an aeroplane. Indicated airspeed is displayed on the black background (in this case both in knots (kn) and miles per hour (mph)). The pilot sets the pressure altitude and air temperature in the top window using the knob. Based on that, the white background scale in the lower left window moves to give true airspeed.
An airspeed indicator is used to measure indicated airspeed (IAS) in knots. IAS is converted to calibrated airspeed (CAS) using an aircraft-specific correction table. CAS is converted to equivalent airspeed (EAS) by allowing for compressibility effects. EAS is converted to true airspeed (TAS) by allowing for density altitude (i.e., height and ...