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Which of these does NOT follow from a flat optimum on a carpet plot?

  • A.Other considerations can decide the value
  • B.The design is insensitive to every variable
  • C.The variable may be chosen on other grounds
  • D.Precision in that variable is not critical

Answer: B

Correct answer: The design is insensitive to every variable

A flat optimum says something about one variable, or a pair of them on a carpet plot, and nothing whatever about the rest - the design may be acutely sensitive to wing loading while being indifferent to aspect ratio. The other three do follow: precision in that variable is not critical, and it may therefore be chosen on grounds the figure of merit does not capture.

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