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Which statement about blockage is FALSE?

  • A.Solid blockage depends on the volume the model occupies
  • B.Wake blockage grows with the model's drag
  • C.Blockage causes uncorrected forces to read high
  • D.A well-streamlined model produces no blockage at all

Answer: D

Streamlining reduces the wake blockage term but does nothing about the solid term, which depends only on the volume displaced. Any model of finite size blocks the section to some degree, which is why frontal area is capped at a few per cent regardless of shape.

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