Discussion
Arrange these configurations by the position of the horizontal surface relative to the wing:
1. Canard, with the surface ahead of the wing
2. Tailless, with no separate horizontal surface
3. Conventional, with the tailplane behind the wing
4. T-tail, with the tailplane behind and above
Select the correct sequence.
Answer: C
The first two obtain their restoring moment quite differently from the last two. A canard's foreplane is destabilising in itself, so the centre of gravity must be placed well forward for the arrangement to work at all.
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