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Design of experiments is used in conceptual design to

  • A.Test the aircraft in flight
  • B.Select the manufacturing process
  • C.Determine the certification basis
  • D.Choose which combinations to evaluate

Answer: D

Correct answer: Choose which combinations to evaluate

A full factorial sweep grows exponentially with the number of variables, so design of experiments selects a much smaller set of points that still resolves the main effects and the important interactions - Latin hypercubes, orthogonal arrays and similar schemes. Twenty-five well-chosen points can characterise a space that would need hundreds by brute force, and the results usually feed a surrogate model that stands in for the full analysis during the search.

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