> I know jets really only make sense with fuel, replace "jet" with "big airplane" ‘Jets’ could make sense even without fuel if you consider that jet propulsion

> I know jets really only make sense with fuel, replace "jet" with "big airplane" ‘Jets’ could make sense even without fuel if you consider that jet propulsion [2] is the generation of thrust using a fast-moving stream of fluid. Today’s jet engines are already turbofans [3] where only part of the propelled air passes through the fuel combustion chamber. [2]: https://en.wikipedia.org/wiki/Jet_propulsion https://en.wikipedia.org/wiki/Jet_propulsion [3]: https://en.wikipedia.org/wiki/Turbofan https://en.wikipedia.org/wiki/Turbofan