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Bad show Wired. 1400 pounds of fuel… out of how many? What is the typical variation in transoceanic flights? Is this noise?
by jws 16y ago
Bad show Wired. 1400 pounds of fuel… out of how many? What is the typical variation in transoceanic flights? Is this noise?
- epochwolf 16y agoFirst it's 1,400 gallons Second, about 6-7% (Extremely rough estimate) Calculation: Boeing 777 data: (nmi = Nautical Miles) Model Fuel Range nmi/g 777-200 31,000 US gal 5,240 nmi 0.17 777-200ER 45,220 US gal 7,725 nmi 0.17 777-200LR 47,890 US gal 9,380 nmi 0.20 (1,400 gallons * nmi/g) Which means 238 to 280 nautical miles on a flight that is 3,772 nautical miles long. Which is a difference of 6-7% Data from - http://en.wikipedia.org/wiki/Boeing_777 http://en.wikipedia.org/wiki/Boeing_777 - http://www.travelmath.com/flight-distance/from/Chicago,+IL/to/Frankfurt,+Germany http://www.travelmath.com/flight-distance/from/Chicago,+IL/t...
- jws 16y agoThank you for fixing both Wired's article and my units! I still wonder about the variation due to weather though. I can say that flight times vary by at least 7%, so that would suggest that fuel use variation should also be over 7%.
- epochwolf 16y ago> I can say that flight times vary by at least 7%, so that would suggest that fuel use variation should also be over 7%. Couple of things to remember. 1. This was a single test flight. Not statistically significant by any measure. 2. My calculation was back of the envelope with unreliable figures. :)