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Analysing a wing rib under air load and fuel pressure treats it as

  • A.A column in compression
  • B.A ring in bending
  • C.A member in pure torsion
  • D.A shear web with flanges

Answer: D

The rib carries chordwise air load and, in a wet bay, fuel inertia pressure, delivering them into the spars and skins as shear. It is usually analysed as a shear web with flanges, often with substantial lightening holes to check.

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