Jet fuel is 43MJ/kg
https://en.m.wikipedia.org/wiki/Energy_density
A big part of it has to be how much is lost to heat, an internal combustion engine is far from efficient... But then again neither is a turbine.
Jet fuel is 43MJ/kg
https://en.m.wikipedia.org/wiki/Energy_density
A big part of it has to be how much is lost to heat, an internal combustion engine is far from efficient... But then again neither is a turbine.