Because "Miniatur Wunderland" is an entertaining exhibition of railroads and spectakular landscapes in an old building.WHY DONT THEY JUST MAKE A REAL LIFE MODEL AIRPORT WITH RADIO CONTROLLED MODEL AIRPLANES THAT CAN REALLY FLY? INSTEAD OF THIS MODEL AIRPORT CITY WITH PLANES THAT TAKE OFF BY A STICK
To fly radiocontrolled Airplanes would be to dangerous for the many visitors of the exhibtion.
The physical laws of nature change not in the same measure as the greatness of the plane.
A Plane in scale one hundred to one, cannot fly with a speed of 2,7 kmh like a orignial plane by a speed of 270 kmh.
So if you build an Mini Airport you have to choose.
Do you want a full scale take of speed - with a simulation of uplift by sticks? so it is in the wonderland -
or use a higher unscale speed (like at all model planes flying).
The reason is:
The aerodynamic drag rises not in a way like the scale rises, the aerodynamic drag rises in the square.
If you double the scale - the Drag coefficient quadruplicate and so on.