Home page
What is a turbotrain?
What is a gas turbine?
   Merit demerit
   Torque details
__More power!
__More speed!
__Miracle in non-electrified line
__ Oil crisis
Turbo train in Japan
  Background for the birth
    Primary source1
    Primary source2
    Primary source3
    Primary source4
    Primary source5
    Primary source6
    Primary source7
    Primary source8
    Primary source9
    Primary source10
    Primary source11
  Revealed problems
Gas turbine advancement
  Facts M1 Abrams revealed
  Second generation of turbines
   Challenge to diesels
Trends of turbo trains
  ALPS project
  Low emission locomotive
 Performance of turbo train
 Is M1 power pack available?
 Effects of 4 speed transmission
  JetTrain simulation
  JetTrain 300 km/h operation
  EMU versus Turbo train

JetTrain simulation


Bombardier JetTrain had failed to put into use but there are still expectations for non-electrified high speed rail plans. To confirm its possibility, design the turbine powered locomotive with analogous performance.

The drivetrain is the turbine electric inverter controlled A.C. motor system.  This time, enables "state-of-the-art" technology.

The thermal efficiency of the created train is somewhat worse than that of Platt and Whitney ST40 gas turbine mounted on JetTrain. The thermal efficiency of ST40 is 33%. As the free version of notchman mini does not allow changing the efficiency, use the value as is.

The train consist is 7 passenger cars with locomotives on each end (2L7T). The output of the locomotive engine is set 3750 KW.

The created locomotive weighs 98.1 tons, about 9% heavier than original JetTrain.
To compare with DMU high speed train, 7 car consist DMU train is also created.

American passenger cars are much heavier than European DMUs and the total weight of both trains are quite different. The JetTrainlike train is nearly twice heavier than the DMU. But it has twice or more output.
The next is the performance curve of them.

The heavier JetTrainlike train has better performance in the range of almost all speed.

The route to simulate is same as the scenario 1. The running curve well illustrates the effect of this difference.

The high acceleration and the high cruising speed enables the short traveling time.

But the fuel consumption is dreadful.

Consist fuel consumption
JetTrainlike 3234.57 kg
DMU 7M 1115.05 kg

The JetTrainlike train consumes nearly three times as much fuel as DMU does. The thermal efficiency of  real JetTrain is 5% better than this imaginary train and nearly 20% reduction will be expected. But the high output and heavy train consumes much fuel and the turbine's low efficiency spurs on this trend.


Go to the top of this page