americana is the movie about a train going around the world.
americana is the movie about a train going around the world.
movie about a train going around the world?
americana
Na
Na
while tilting reduces the problem for the passengers, it does not change the forces on the rails. a train going around a bend at high speed rides up onto the rails, and if the flanges on the inside of the wheels contact the rails they cause considerable wear. eliminating this effect is difficult, but it can be reduced by lowering the weight of the locomotive, or eliminating the locomotive entirely and distributing the motive power throughout the train. apt took the former route, and the original apt-e used gas turbine power. gas turbines have an excellent power-to-weight ratio, perhaps ten times that of a conventional diesel engine, with the downside that they use considerably more fuel at idle. this was not a concern when the apt was first being designed, but after the 1973 oil crisis they quickly changed the design to be electrically powered. this was even lighter than the turbine version, but requiring the lines to be electrified at great cost. as a result, only the west coast main line from london to glasgow central station used the electrically powered apt-ps.
lrc (train)