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A mixed exhaust turbofan

  • A.Uses two separate nozzles
  • B.Has no bypass stream
  • C.Mixes fuel into the bypass duct
  • D.Combines the streams before one nozzle

Answer: D

Mixing the hot core flow with the cooler bypass flow recovers a small gain in specific fuel consumption and reduces noise. The mixer and longer duct add weight, so the arrangement suits low and medium bypass engines better than very high bypass ones.

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