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Ok so first if all anlinear electric motor is really expensive all the things that you said that were good about the aérotrain then dont apply annymore.
The amount of thrust you have to generate to stop a decently sized train is huge, that kind of turbine would be super loud and blow tons of debris around.
If you brake with biting the rail you will also have lots of wear.
I dont even get why you would need to brake that fast? With a vehicle that heavy you will never be able to brake so fast that you could stop if something happened a hundret meters in fro t of you. And even if you bite down on the rail to stop near instantly the kinetic energy of a few hundret tons moving at lets say 70km/h would just destroy the rail.
Ok so first if all anlinear electric motor is really expensive all the things that you said that were good about the aérotrain then dont apply annymore.
The amount of thrust you have to generate to stop a decently sized train is huge, that kind of turbine would be super loud and blow tons of debris around. If you brake with biting the rail you will also have lots of wear.
I dont even get why you would need to brake that fast? With a vehicle that heavy you will never be able to brake so fast that you could stop if something happened a hundret meters in fro t of you. And even if you bite down on the rail to stop near instantly the kinetic energy of a few hundret tons moving at lets say 70km/h would just destroy the rail.