It occurs to me that if an aircraft flies direct from Europe to Australia, it has to carry about twice as much fuel as it would if it stopped to refuel at half distance. For the first half of the direct flight, the aircraft will be carrying tens of tons of fuel more than if it was fuelled to stop halfway.
Even allowing for extra fuel used to descend and climb due to a technical stop, I wonder how much extra fuel is used flying direct (for the payload carried) compared with that used if a technical stop is made. My guess is that there is a dramatic increase. in fuel consumption per payload ton That seems a pretty irresponsible way for long distance aviation to operate. Should airlines (and manufacturers) therefore abandon the idea of ULR flights? Should governments put punitive taxes on such flights to discourage them?