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Pattern factor describes

  • A.The efficiency of combustion
  • B.The fuel spray droplet size
  • C.The non-uniformity of temperature at the combustor exit
  • D.The pressure loss through the chamber

Answer: C

It compares the peak exit temperature with the mean and the compressor delivery temperature, and a high value shortens turbine blade life sharply. Dilution hole placement is the main tool for controlling it in a given chamber.

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