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Match each component in List I with its function in List II.

List I

A. Pylon

B. Nacelle

C. Diffuser

D. Thrust reverser

List II

1. Fairing enclosing the engine

2. Positioning the pod and carrying its loads into the wing

3. Turning the fan flow forward to retard the aircraft

4. Slowing the captured flow before the fan face

Select the correct match.

  • A.A-3, B-1, C-4, D-2
  • B.A-2, B-1, C-4, D-3
  • C.A-1, B-2, C-4, D-3
  • D.A-2, B-4, C-1, D-3

Answer: B

Correct answer: A-2, B-1, C-4, D-3

Each component is matched to its function. The pylon (A) positions the pod and carries its loads into the wing (2); the nacelle (B) is the fairing enclosing the engine (1).

The diffuser (C) slows the captured flow before the fan face (4), since the compressor requires a low inlet Mach number; and the thrust reverser (D) turns the fan flow forward to retard the aircraft (3). The four span structure, aerodynamic fairing, internal flow and a control device respectively.

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