Discussion
Statement I: A conventional tailplane usually carries a download in trimmed flight.
Statement II: The wing must then produce more lift than the aeroplane's weight alone.
In the light of the above statements, choose the correct answer.
Answer: B
Correct answer: Both Statement I and Statement II are correct
Both are true and the second follows from the first. With the centre of gravity ahead of the wing\'s aerodynamic centre, trim requires a tail download, and vertical equilibrium then gives \( L_w = W + L_t \). The wing carries more than the weight, and the extra induced drag is the trim drag. The penalty grows as the centre of gravity moves forward, which is one reason aircraft are loaded as far aft as the stability limits allow.
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