Discussion
The tailplane of a conventional aeroplane normally carries an upward load in trim. Is this correct?
Answer: A
Correct answer: No, it usually carries a download
With the centre of gravity ahead of the wing’s centre of lift the wing produces a nose-down moment, and the tail must push down to balance it. The wing then carries the weight plus that download, which is the origin of trim drag. Only with the centre of gravity well aft does the load approach zero or reverse, and that is the condition the aft limit exists to prevent.
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