Take-off run

The take-off run is the first phase of take-off . This is the acceleration of an aircraft on the runway from complete standstill to rotating (change of flight position with regard to the transverse axis , i.e. raising the nose and lowering the tail).

Length of take-off run

The length of the take-off run depends on the type of aircraft, the weight of the aircraft, the configuration ( buoyancy aids , "landing flaps"), the altitude of the take-off airport and the wind and weather conditions (air pressure). Manufacturers such as Boeing and Airbus issue technical specifications for this (see web links). For example, the take-off distance of a Boeing 737-700 at maximum take-off weight under normal conditions is 1830 meters. The take-off distance of the Airbus A340 is given as about 3000 meters.

Classification of the start run

During the take-off run, pilots must monitor the aircraft 's systems and the aircraft's alignment along the runway centerline. Before take-off, guide speeds are calculated from the parameters mentioned above to plan the take-off run, for example the decision speed for an abortion V ₁ , the rotation speed V _R at which the nose wheel lifts off the runway and the aircraft rotates around the main landing gear and the take-off speed V _lof (from "lift off"), in which the main landing gear and thus the aircraft take off from the runway.