PPRuNe Forums - EPR Question

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MD83FO

6th August 2020 23:21

EPR Question

Hi! Is it fair to say that a engine indicating an EPR below 1 is windmilling ?

Pugilistic Animus

7th August 2020 00:35

https://www.pprune.org/tech-log/6341...aying-epr.html
post 31...but overall that's a great thread

tdracer

7th August 2020 00:37

Quote:

Originally Posted by MD83FO (Post 10854953)

Hi! Is it fair to say that a engine indicating an EPR below 1 is windmilling ?

No...
During idle descent, it's quite common and normal for EPR to read less than 1.0 (I've seen as low as 0.7). And, even though EPR is below 1.0, the core is still producing thrust due to the high exit temperature.

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