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A wing section is normally analysed in which order?

  • A.Find the margin of safety, then the stresses
  • B.Compute the deflection before any stresses
  • C.Idealise, then properties, stresses, shear flows
  • D.Compute shear flows, then idealise the section

Answer: C

Correct answer: Idealise, then properties, stresses, shear flows

Each step depends on the one before it. The section is first idealised into booms carrying direct stress and skins carrying shear; the section properties follow from that idealisation; the direct stresses follow from the properties and the applied bending; and the shear flows follow from the direct stress distribution. Deflections and margins come last, since both require the stresses to be known.

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