How far does it take for a jet to take off?

Answer 1

There is no one answer to this question. The takeoff distance varies widely between different makes and models of aircraft. Even if you pick just one aircraft model, such as an Airbus A320, there are still many different answers. It depends on the powerplants installed, what optional features the craft has, etc. For a single, particular aircraft, the Pilot must still compute the takeoff distance for each and every takeoff. It can be different every time. He uses the takeoff weight of the plane, subtracting the fuel burned during taxi. He must know the temperature, the barometric pressure, and the altitude of the runway, because all affect the distance. He must also compute the maximum distance the takeoff can go and still be able to abort and stop safely if there is a problem. Is the air conditioning on, using some of the engines power? Is the wind blowing? From what direction? These too affect the takeoff distance and must be taken into account. You can get an idea of the distance by looking at the length of airport runways. A jet will use a runway that will have sufficient length to get airborne PLUS extra length in case it has to stop.