My information is that a jet engine ALWAYS produces thrust, even at idle- the thrust remaining equals about 5% of max thrust.
Actually, if you descend on idle you can have altitude times 3 miles, but if you have all engines flameout you just get altitude times 2 miles, roughly.
That's the proof that jet engine always push!
Flight detent, - At flight idle and reasonably high speeds, the slow running fan will force a percentage of the incoming airflow to bypass actually entering the fan.... -
Maybe yes maybe not...what is the source of that information?
Standing to be corrected
LEM
