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Which statement about a diverging sizing loop is TRUE?

  • A.It indicates an arithmetic error
  • B.It means the aircraft will simply be heavy
  • C.It can be fixed by iterating more times
  • D.The mission exceeds the technology assumed

Answer: D

Correct answer: The mission exceeds the technology assumed

Divergence means the growth factor exceeds unity: each added kilogramme demands more than a kilogramme in return, so the aircraft has no finite size at which the mission closes. Iterating further only produces larger numbers, and the result is not merely a heavy aeroplane but no aeroplane at all. The response is to change an input - relax range or payload, or assume better aerodynamics or fuel consumption and record the risk.

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