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The primary aerodynamic purpose of the pylon is to

  • A.Carry the engine's weight only
  • B.House the thrust reverser
  • C.Provide a mounting for the flaps
  • D.Minimise interference drag

Answer: D

Getting the nacelle far enough forward and low enough keeps the channel between it and the wing from choking, which is where interference drag comes from. Structurally it also carries thrust and engine loads into the wing.

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