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23rd Dec 2011, 22:54

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rudderrudderrat

Join Date: Oct 2009

Location: UK

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Hi LikeABoss,

Quote:

but above that, where air is even thinner, why exactly would you burn more fuel.

Because you'll probably exceed Mach Crit.

See Bookworm's explanation: http://www.pprune.org/tech-log/45327...speed-jet.html of best IAS.

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