Timz From United States of America, joined Sep 1999, 6634 posts, RR: 7 Reply 1, posted (6 years 2 months 1 week 4 days 16 hours ago) and read 13734 times:
If you want anything better than vague answers, you have to specify: fuel burn at what speed, at what altitude, at what temperature, at what weight, with which engine. But it's true, even if you do specify all that you probably won't get the straight dope.
WingedMigrator From United States of America, joined Oct 2005, 2066 posts, RR: 56 Reply 6, posted (6 years 2 months 1 week 4 days 5 hours ago) and read 13654 times:
This is a chart of relative fuel burn for large widebody airliners. The sector length is 6000 nm. The payload is 95 kg times the area of the cabin in square meters (i.e. 1 pax / m2). The 773ER is taken as 100%, and burns 3100 gal/hr.
The other planes don't all cruise at the same speed as the 773ER so a better gauge is fuel burn per passenger mile, which is what is shown in the chart.
Tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 81 Reply 7, posted (6 years 2 months 1 week 1 day 7 hours ago) and read 13464 times:
Quoting Lrgt (Thread starter): With all the information on the internet, there seems there to be no website that lists aircraft's fuel burn numbers!
It's highly proprietary. As noted in prior replies, actual fuel burn is very sensitive to a whole bunch of factors (environmental, procedural, and technical). The Flight Management Computers on all current-generation airliners have very accurate models for fuel burn so this information is known, it's just not released because the people that have it have spent a lot of time and money developing it and they're not going to give it away for free.