Today’s jet fuel—the most common formulation of which is called Jet A-1—has a number of advantages. It has a very high energy density, as it packs 42.8 megajoules into each kilogram (that is slightly less than gasoline but it can stay liquid down to –47°C), and it beats gasoline on cost, evaporative losses at high altitude, and risk of fire during handling. No real rivals yet exist.
