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Honeycombs and screens are placed in the settling chamber to

  • A.Accelerate the flow
  • B.Measure the free-stream velocity
  • C.Support the model
  • D.Straighten the flow and break up eddies

Answer: D

The honeycomb removes swirl and lateral velocity components while successive fine screens break large eddies into smaller ones that decay quickly. Placing them where the speed is lowest keeps their pressure loss, and so the drive power, acceptable.

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