Hydrocarbon Fuel Cells for 3e

[Fred Brackin]

Originally Posted by GURPS Fox

Please note that using gas turbines would balloon my fuel requirements,

• Ceramic Engine (Supercharged, LNG fuel): 4MW output, 88111lbs/3997kg weight, 180gph
• Gas Turbine (standard, LNG Fuel): 4MW output, 4417lbs/2003kg, 330gph
• Hydrocarbon Fuel Cell (LNG Fuel): 4MW, 2025lbs/9083kg, 153gph (/3)/80gph (multifuel modifier)

Note, the current Humvee equiv has an engine grouping (fuel and all) of 22281lbs/6677kg in terms of mass.

Those engines are _huge_ both in weight and output. 4 MW is more than 5000 horsepower.

Also, when I google "Humvee" I get a max weight of maybe 8500 lbs for the whole thing and not just the engine and gas tank.. Not sure what your 2.5x as large vehicle is.

It seems possible to me with those engines that your vehicle size and performance goals are too large for the setting's resources.