Zero Cost Index
gents,
i know that enter zero as cost index will theoretically give you MRC (essentially most fuel upon arrival, right?). this don't seem to be the case on our b777-200. cost index of anything below 50 don't seem to 'gain' any fuel except 'lose' time. does this have anything to do with the fact that the b777 have a supercritical wing? can you point me to any site regarding this subject? have tried google. lots of reference to supercritical airfoil but nothing with relation to cost index. thanks in advance.
SR