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Aspect ratio of a wing is defined as

  • A.Span squared divided by planform area
  • B.Planform area divided by span squared
  • C.Span divided by maximum thickness
  • D.Root chord divided by tip chord

Answer: A

Aspect ratio is the span squared divided by the planform area. For a rectangular wing this reduces to span divided by chord, but the general definition covers tapered and swept planforms as well. The ratio of root chord to tip chord is the taper ratio, a different quantity altogether.

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