thanks bub.
Fuel cheat was a hidden art in the olden days, when wings were fat and safety came first. At the outset, if the chief found you squirreling fuel away aft of cg you caught Hell. Then the beanbags caught on, even that long ago, when fuel saved was minute, they said "hold on, what's this tail loading thang"
Whether negative lift or no, I always looked at it as a drag nullifier. To load the tail aft means some of net lift to carry the a/c is shifted to the tail. A heavy tail, carrying some weight, "flies" with less induced drag, which instead converts to lift, to obvious advantage in fuel savings. win/win, except when you lose. And when the cg is too far aft, to lose is to die.
This is from a non-engineer, maybe I should drag it across Chris' desk before posting.....
not now, nor have I ever been an engineer. Quick question for
takata. You say PF input is limited to 2.5 g with inertially derived g envelope prot in ALT 2. Is that separate from what the a/c will bear, or a total. As in. the Pilot can not ask for/get more than 2.5g? Does the a/c compute a "g" at all in AL2? Except for its limits? G is not "damped"?