3 ms·
not even close. Piston planes cruise at about 75% rated power (engine manufacturers do not suggest running engines beyond that for extended periods of time). J
by dmitrygr 6y ago
not even close.
Piston planes cruise at about 75% rated power (engine manufacturers do not suggest running engines beyond that for extended periods of time). Jets closer to 90
- sokoloff 6y agoJets typically can’t make 90% power in cruise and are often flying at 50% or lower fuel flows than takeoff. (You might be setting almost 100% N1 speed as your power setting, but that’s not the same as setting 100% actual power in a jet in high-altitude cruise.) Fuel flow is a good proxy for power. From the Citation II flight manual: max cruise thrust settings (104% N1 over 25K feet) have a peak fuel flow of 1716 lb/hr at 15K feet vs 1083 lb/hr at 35K vs 721 lb/hr at 43K ft. Sea-level takeoff fuel flows are not given in the manual, but are around 2000 lb/hr, so typical low 30s cruise flight is 55-65% power.