I put in the fuel range patch, and use it to determine range at any speed. I have found that 10-12 knots is usually best (1.5, no mods). I also use it to determine how fast I can go to get to the closest refit base without running of fuel.
I don't have the name or location of that patch, I'm out of town with no way to search my desktop for the info, but I know that some of the guys here can direct you to it.
|