Twin engine Airbus 320 taxi procedures involve not only a notable fuel consumption but an increment of engine hour operation, reducing its life cycle. The possibility of using air generators is studied in this Bachelor Thesis. These air generators will be located in the aircraft fuselage so as to charge batteries. The energy stored will be used for an efficient taxiing but also for reducing main engines operating hours. Possible locations will be studied for one or more air generators, including its rightness and efficiency. Students must consider all negative effects produced by air generators that may alter aircraft aerodynamics and operation. The extra weight added due to batteries and electrical generator needed must be taken into accou...