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Old 17th Aug 2021, 21:52
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Specaircrew
 
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All the multi engine jets that I've flown are definitely in the 85-90% RPM band with the possible exception of the Vulcan which was so overpowered that long range cruise power, as I recall, was slightly less ;-) Of course the person that set the question may live in the theoretical rather than the real world, however my ' Boys Book of Aeroplanes'(AP3456) states that turbojet aircraft cruise using approx 90% of max thrust for the best range.

Last edited by Specaircrew; 17th Aug 2021 at 22:34.
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