| Balanced Field Takeoff |
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To safely complete a takeoff, the aircraft must reach a speed of V1 prior to any engine failure. However, the probability of engine failure increases with the power setting selected, and it is therefore advantageous to reduce the power setting. Performance charts and flight computers are used to determine a power setting that will allow acceleration to V1 such that there remains enough runway to stop safely in the event of an engine failure prior to V1 , or to continue flight in the event of an engine failure subsequent to reaching V1 . Landing and Takeoff Performance Monitoring Systems are devices aimed at providing to the pilot information regarding the effectiveness of the balanced field concept, and averting runway overruns that occur in situations not adequately addressed by the balanced field approach. Using the balanced field takeoff concept, V1 is the maximum speed in the takeoff at which the pilot must take the first action (e.g. reduce thrust, apply brakes, deploy speed brakes) to stop the airplane within the accelerate-stop distance and the minimum speed at which the takeoff can be continued and achieve the required height above the takeoff surface within the takeoff distance. |
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