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Equivalent shaft horsepower credits a turboprop with

  • A.The power its gas generator could produce as a turbojet
  • B.Its shaft power plus an allowance for residual jet thrust
  • C.Its shaft power alone
  • D.Its jet thrust alone

Answer: B

The residual jet contributes real thrust, so it is converted to an equivalent power using an assumed propeller efficiency. Quoting shaft power alone would understate the engine, and the two figures are always distinguished carefully in ratings.

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