The performance section of an information manual I am using states that the glide range indicated is "power off".

Does this terminology definitely imply that the engine is not firing? or could this also refer to an idle engine that is running, but producing nearly zero thrust, or even creating drag?

I assume, it means zero ignition, but cannot tell for sure from the document.

  • $\begingroup$ Power off means what it means. No ignition or no fuel, and a windmilling prop which causes drag. $\endgroup$ Jun 20, 2021 at 13:58
  • $\begingroup$ What sort of airplane is it? $\endgroup$
    – skipper44
    Jun 20, 2021 at 14:18
  • $\begingroup$ This is regarding single-engine airplanes with reciprocating engines. $\endgroup$ Jun 20, 2021 at 18:11
  • $\begingroup$ In Australia, it's with engine inoperative, see page 47, Glide Performance. $\endgroup$
    – mins
    Jun 20, 2021 at 21:10


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