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The method of characteristics is used principally to

  • A.Estimate skin-friction drag
  • B.Design a supersonic nozzle contour
  • C.Compute the boundary layer on a flat plate
  • D.Predict the stalling angle of an aerofoil

Answer: B

The method marches the two families of characteristics through the supersonic region and produces the wall contour needed to cancel every wave, leaving uniform parallel flow at the exit. Every high-quality supersonic wind tunnel nozzle is shaped this way.

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