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Which of these is NOT a way of limiting the torsional penalty of a wing cut-out?

  • A.Keeping the opening as small as the function allows
  • B.Making the opening as large as possible to reduce weight
  • C.Ringing the opening with heavy edge members
  • D.Fitting a latched, load-carrying door

Answer: B

Correct answer: Making the opening as large as possible to reduce weight

This inverts the trade. A larger opening interrupts more of the shear circuit and demands heavier edge members and corner fittings, so it costs weight rather than saving it. The other three are the standard measures: keep the opening no larger than the function requires, ring it with heavy edge members, and make the door itself carry load.

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