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Turbine entry temperature is limited by

  • A.What the blade materials survive
  • B.The energy content of the fuel
  • C.The compressor delivery pressure
  • D.The nozzle exit area

Answer: A

The gas can be made far hotter than any alloy tolerates, so the ceiling is metallurgical rather than thermodynamic. Modern engines run entry temperatures well above the melting point of the blade alloy, which is possible only because of cooling.

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