If 4 American railroad Dash 9 engines in front and 50 cars back 2 more and at rear 2 more; are the remote engines controlled by radio? If so, what happens when rear engines enter a tunnel? Wouldn't they loose contact with engineer? I can't see them being hard wired together ( too many conections ) Or are they controlled by 3 engineers.
2006-09-06 12:09:43 · 4 answers · asked by buzzard 2 2 in Science & Mathematics ➔ Engineering
theres a cable running threw the lenght of the train.gets worked remotely from the front of the train.
2006-09-06 12:20:05 · answer #1 · answered by spoornetspanner 2 · 0⤊ 0⤋
Sorry, I thought you were talking about toy engines, which are radio controlled. Not sure about the big boys. It may be a combination of radio and computer controls.
The rear engines wouldn't lose contact with the engines in a tunnel because the tunnels are usually in a straight line -- or almost -- so there wouldn't be any problem with conductivity or reception in the tunnel. Where tunnel reception blanks out is when the transmission unit is above ground and the tunnel is underground. The radio waves are blocked by ten or twenty feet of earth. That's why your car radio doesn't work in a tunnel. But if the transmitter were in the tunnel with the car, it would continue to play. It may work the same way with the trains.
2006-09-06 12:14:50 · answer #2 · answered by old lady 7 · 0⤊ 0⤋
Each car in the consist is coupled together and has couplings involved as well. That's how the brakes are applied to each car. Rear locomotives would be controlled by the front locomotives.
In the old days, each locomotive would have an engineer operating it that would require visual coordination with the front locomotive.
2006-09-06 15:05:01 · answer #3 · answered by Mack Man 5 · 0⤊ 0⤋
Tin cans and string??
I don't understand why you think radio wouldn't work.
Doug
2006-09-06 12:14:10 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋