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Flow distortion at the compressor face refers to

  • A.Non-uniformity across the face
  • B.A reduction in the average total pressure
  • C.Excessive axial Mach number
  • D.Icing on the inlet guide vanes

Answer: A

A blade passing through a low pressure sector sees a momentarily higher incidence and may stall, even though the average condition looks acceptable. That is why distortion is quantified separately from recovery and treated as a stability rather than a performance issue.

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