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Thermal efficiency of a gas turbine describes

  • A.The ratio of bypass to core flow
  • B.Fuel energy becoming gas energy
  • C.The fraction of jet energy becoming thrust power
  • D.The efficiency of the propeller

Answer: B

It depends chiefly on the pressure ratio and the turbine entry temperature, both of which have risen steadily with materials development. Overall efficiency is the product of thermal and propulsive efficiency, so both must be pursued together.

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