I can understand this in the F-22 which is the case but airliners are more stable than an F-22 so is this the biggest advantage to commercial airlinesrs i’m not so sure.
Thank you all for all your feedback I have learned alot.
Yes it is used on the A330 and A340 as we employ active c of g control. Boeing just use the tail fuel tank as a means of getting more fuel on board whereas widebodied Airbus types shift fuel forward and backward during a flight to place the c of g as close to the center of pressure as possible. This has the effect of making the aircraft less stable (which the fbw deals with) but it removes any vertical force required from the tailplane and therefore its associated drag. We achieve a fuel burn reduction of approximately 3.5% as a result. This saving is worth millions.
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