Reference Landing Speed

In the context of aerospace engineering, Reference Landing Speed, often denoted as Vref, is the speed at which an aircraft is supposed to approach a runway for landing under standard conditions. It is a crucial parameter in the operation of any aircraft, as it ensures the safety and efficiency of the landing process. The reference landing speed is typically calculated based on the aircraft's weight, configuration, and the existing atmospheric conditions. It is usually defined as 1.3 times the stall speed of the aircraft in the landing configuration. The stall speed is the minimum speed at which the aircraft can maintain level flight without stalling. The reference landing speed is used by pilots to determine the approach speed during the final phase of flight, ensuring a safe landing with sufficient margin above the stall speed. It is also used in the design and testing of aircraft, particularly in determining the required length of runways and the effectiveness of braking systems.
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