> I asked a 747-400 pilot what was the fuel flow per engine at cruise. He said
> about 6000 lb-per-hour. Assuming a TSFC of 0.5 (I've seen 0.318 and 0.348
> for the PW4060, but I don't trust these numbers) that would mean each engine
> is developing 12000 pounds of thrust. Therefore the total drag on the
> airplane at cruise is 48000 pounds, and total fuel flow is 24000 pph.
Well. The YaSim model seems to burn something like 2000-4000 GALLONS
per hour (depending on altitude and weight) during normal cruise
(>33000ft) per engine. Go figure.
Andras
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Major Andras
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www: http://andras.webhop.org/
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