![]() There is another interesting factor that can influence V1 when the runway is wet. Finally, V2 is the minimum safe airspeed during the climb out if an engine fails after V1.Ī heavier aircraft will result in all three speeds increasing. VR is the speed at which the aircraft can be rotated and allowed to lift off from the runway. V1 is the decision speed at which the pilot is committed to taking off regardless of what happens. These are known as V1, VR (Rotate), and V2. ![]() Before beginning the takeoff run, pilots must be familiar with three different speeds. The use of the term speeds in its plural form may surprise you. The essential information that a pilot needs to know before takeoff is how much engine thrust should be used, how much flap should be deployed, and finally, what the takeoff speeds should be. Factors that influence performance include aircraft weight, environmental conditions, and runway characteristics. No two flights are alike when it comes to takeoff performance. Nowadays, such calculations are performed quickly and very accurately using tablets or laptops on board. Previously, such calculations were performed using cumbersome paper charts that required interpolation to extract the required data. ![]() The computations relating to takeoff performance, which are conducted prior to each flight, are at the heart of these. DALLAS – Even before you have set foot on board the aircraft that is flying you to your destination, a plethora of calculations will have been performed by the pilots that are flying you. ![]()
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