Discussion
Which of the following would not increase the elevator deflection required to trim?
Answer: B
Correct answer: Moving the centre of gravity aft
Moving the centre of gravity aft reduces the elevator deflection needed to trim, since the wing's lift acts closer to the centre of gravity and the tail download required is smaller. That is why aft loading is comfortable for control and limited instead by stability.
The other three all increase the demand: forward loading needs a larger download, entering ground effect adds a nose-down moment to be countered, and a flap-induced nose-down pitch must be balanced with up elevator.
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