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The radial red line near the bottom of green arc indicates V mc, the minimum indicated airspeed at which the aircraft can be controlled with the critical engine inoperative. The radial blue line indicates V YSE, the speed for best rate of climb with the critical engine inoperative. [2]
[4] [5] On the airspeed indicator of a twin-engine aircraft of less than 6000 lbs (2722 kg), the V MCA is indicated by a red radial line, as standardised by FAR 23. [4] [5] Most test pilot schools use multiple, more specific minimum control speeds, as V MC will change depending on the stage of flight.
A single-engined Cessna 150L's airspeed indicator indicating its V-speeds in knots. In aviation, ... The red line is the V NE, the never-exceed speed.
A plane flying past a radar station: the plane's velocity vector (red) is the sum of the radial velocity (green) and the tangential velocity (blue). The radial velocity or line-of-sight velocity of a target with respect to an observer is the rate of change of the vector displacement between the two points.
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.
A basic airspeed indicator with the indicated airspeed (IAS) indicated in knots ("Kt" or "Kts" or "KIAS") -- the most common unit of measure for airspeed. Some airspeed indicators in aircraft prior to the mid-1970s indicate in miles per hour plus knots (1 knot = 1.15 mph) or kilometers per hour (1 knot = 1.85 km/h).
When power setting is kept the same but airspeed fluctuates, aircraft tends to return to its original airspeed at point A, magnify the speed change at point B, and remain at its new speed at point C. An aircraft in cruise flight is typically speed stable. If speed increases, drag increases, which will reduce the speed back to equilibrium for ...
A WAVE in a Boeing Stearman N2S United States Navy training aircraft United States Navy N2S-2 at NAS Corpus Christi, 1943 United States Navy NS-1s of the NAS Pensacola Flight School, 1936 Boeing Stearman E75 (PT-13D) of 1944 Vintage Boeing-Stearman Model 75, Breitling SA Boeing Stearman (PT-13D) of the TALOA in Dirgantara Mandala Museum, Indonesia Boeing Stearman (PT-13) of the Israeli Air ...