Discussion
Which of these does NOT reduce the wing root bending moment?
Answer: B
Correct answer: Burning the outboard fuel first
Burning the outboard fuel first removes the very weight that was relieving the root bending, so it increases the moment rather than reducing it. Wing-mounted engines, retained outboard fuel and a swept wing that washes out under load all work the other way, either by adding downward mass outboard or by shedding lift from the tip.
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