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A design shows a wing group at 22 per cent of take-off weight. The most likely conclusion is

  • A.A correct figure for a transport
  • B.That the aircraft is very light
  • C.An error; typical values are near eleven
  • D.An unusually efficient wing

Answer: C

Twice the typical fraction suggests a mistake in the calculation or in the units rather than a genuine design outcome. Comparing group fractions against expected ranges is one of the quickest checks available on a weight estimate.

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