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Dihedral is incorporated in a wing chiefly to

  • A.Provide lateral stability in sideslip
  • B.Increase the wing's lift
  • C.Reduce induced drag
  • D.Raise the critical Mach number

Answer: A

In a sideslip the lower wing meets the flow at a greater effective incidence and lifts more, rolling the aircraft back towards level. Sweep and a high wing position both contribute the same effect, so all three are traded together.

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