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Intake anti-icing is provided because ice on the lip

  • A.Reduces the intake noise
  • B.Improves compressor efficiency
  • C.Distorts the flow and can shed into the engine
  • D.Increases the total pressure recovery

Answer: C

Accretion disturbs the flow field the intake was designed around and a shed fragment can damage the fan directly. Hot bleed air or electrical heating keeps the leading edge above freezing, which is why anti-icing is a required system rather than an optional one.

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