From my best effort to make heads or tails of it, it is this way.
fuel 1.0= is the rate U use fuel in time multiplier (ie. if it is at 2.0 U us twice the amount of fuel for the same distance and speed and throttle setting as U would at 1.0)
1.0 is the closest to the REAL settings that planes fly with, although some birds in RL like the B52 have a fuel setting of .50 cause they can fly forever.
the Tower Range is the max range the Radar at that field can pick up a enmy or frndly dot.
the down time is the amount of time destroied structures will stay down, before respawning.
Icon range or Icon short as U have it is set in 3 settings I belive short 3k before U see Icon of enmy planes, med which is normal icon settings in MA 6k Icon vis, and long range and thats out to 10k on vis on Icon about as soon as U see a dot thats when U have icon.
Ah and the Kill shooter thats the freindly fire setting if its on the U take damage for shooting a freindly plane or vehicle if its off they take damage from your shots and U dont, like real life.
Its all pretty simple if U take a step back and think about it from a gamers point of view, hope I could have helped U out some. <S>
Hodo