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The structure that carries an engine pod ahead of and below the wing is the _____.

  • A.nacelle
  • B.cowl
  • C.diverter
  • D.pylon

Answer: D

Correct answer: pylon

The pylon is the structure that positions the engine pod ahead of and below the wing and carries its loads - weight, thrust, inertia and gyroscopic - into the wing box. It also routes fuel, bleed air, electrical and control services.

The nacelle is the aerodynamic fairing enclosing the engine, and the cowls are its openable panels. The diverter is an inlet feature on fuselage-side installations. The pylon's length and shape matter aerodynamically as well as structurally, since it must keep the channel between pod and wing from choking.

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