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Total pressure recovery of an inlet is defined as

  • A.The ratio of inlet area to compressor face area
  • B.Total pressure at the fan face over free stream
  • C.The ratio of static pressures across the inlet
  • D.The ratio of mass flows in and out

Answer: B

It measures how much of the flow's total pressure survives the journey to the engine, and it maps almost directly into thrust. A one per cent loss in recovery can cost appreciably more than one per cent of the thrust available.

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