Methods of Propulsion
The main concern with moving such vehicles on land is torque, as their high mass presents a large amount of inertia to overcome. For this reason, the propulsion system must be able to supply considerable amounts of initial torque to get the machine moving from standstill. For instance, the Leopard 2 main battle tank's engine maxes out at 4,700 N·m (3,458 lbs·ft).
If power supply is not a problem, electric motors may also be considered, as some types are able to produce maximum torque from zero revolutions per minute (rpm) and virtually maintain it all the way to redline. In comparison, internal combustion engines steadily build their torque as rpm increases until they hit a "torque peak", after which torque output begins to drop if engine speeds continue increasing.
Read more about this topic: Landship
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