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Taken together, the activities in this topic answer which question?

  • A.How strong must the wing spar be
  • B.What is the aircraft's stalling speed
  • C.Which alloy should the skin use
  • D.What to build, and how to know we have

Answer: D

Correct answer: What to build, and how to know we have

That is the whole of requirements engineering in one line. The requirements say what must be achieved; the trade studies and constraint diagram decide the configuration that will achieve it; and verification and validation establish that it has been achieved and that it was the right thing to achieve. Spar strength, stalling speed and skin alloy are all answers that follow, arrived at within the framework this topic sets up.

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