Here's a quick one on fuel ladders, again pulled from a RW site
But it's easy math...
Figuring fuel flows for example.
2000# per hour per side (2 engine jet)
Equates to 4000# per hour, 2000# in 30 minutes, 1000# in 15, 500# in 7.5, and about 375# every 2-3 minutes....
Use that for fuel ladder to track your fuel in a flight. If you're above where you need to be to make it back with max trap or min on deck, you got gas to play with
So for a non-combat hop, you take off on your cycle knowing how long you have until the recovery cycle starts, pretty easy for the Hornet due to the constant gas issues. That's normally a set time, so if I go out and do some ACM and then get tasked to go look at a surface contact, based on my time I should have x lbs of gas remaining, if for example I'm over 500# on my ladder, I've "made" gas.