Does a civil aircraft need a tow truck?
The tractor is not required, but if the plane is connected to the boarding bridges on the tractor must use it, otherwise the plane not backwards, if the plane is connected with the general car ferry, then you can run on the runway, turning to aircraft and engine brake differential, differential thrust!
LS, the theory is not, after the engine starts to jet thrust, independent glide, steering and braking are responsible for the landing gear, need tractor is mainly because the time away from the terminal very close to not allow the ignition, engine or jet may blow bad terminal, and since then the jet jet engine, front air intake inspiratory capacity is very great, there are times to start the engine before someone standing in front of a few meters away was sucked into the broken...
Of course. Do you know how much power the plane takes off? Besides, you have to taxi for a long distance, and you can only use a tractor outside the runwayAlso, the plane has no reverse gear. It needs traction to control the direction and move to the runwayAs long as the tractor is attached to the landing gear of the aircraft, then it rolls out and turns around, the plane can slide itself to the runway.