I see Peter...I don't recognise that gadget so we obviously don't have one
But I can see now, why you always know your exact fuel and the flow rate!
Most training flights don't last much more than an hour, and you would usually have at least 3 hours fuel when you taxi out, so it's not really part of the normal flying training to fly right down to minimum fuel.
True. But we only fill our tanks with enough fuel plus a bit for the Sortie. Hence most training trips will only use about 20 litres, leaving 40 in the tank. But if we are flying navexes out of the local area, or the qualified club pilots are taking a club aircraft out, we will fuel up with more. So training with planning using fuel circles ensures that we fill up with enough fuel and that we don't fly down to minimum fuel. This system also ensures that we know (ok,
I know as the student) the minimum fuel required to land with.
As it happens, I am planning a trip of 93 miles at the moment, with the aforementioned fuel circles, and I know that I can fuel up with 75 litres and be fine...