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 How Much Fuel Do Different Aircraft Burn?
 Lrgt From United States of America, joined Jul 2004, 718 posts, RR: 0Posted Tue Oct 9 2007 10:07:03 UTC (8 years 7 months 3 weeks 5 days 7 hours ago) and read 40955 times:

 I've heard 'rumors' as to the fuel burn on a few aircraft verbally over the years... is this at all accurate? B717 = 550 gal/hr DC9-30 = 725 gal/hr DC9-50 = 775 gal/hr B737-200 = 800 gal/hr B737-800 = 800 gal/hr B757-200 = 925 gal/hr B727-200 = 1250 gal/hr B767-200 = 1275 gal/hr A300-600 = 1600 gal/hr A330-300 = 1600 gal/hr B777-200 = 2000 gal/hr L1011 = 2750 gal/hr DC10 = 3000 gal/hr B747 = 4300 gal/hr Also, if props are much more efficient on short flights, what reasons make Aloha use 737-200's on 50-mile interisland flights and Laker Airways use a 727-200 for FLL-FPO?
 Don't bring up the NW DC9's unless you have to!
 Tdscanuck From Canada, joined Jan 2006, 12710 posts, RR: 78 Reply 1, posted Fri Oct 12 2007 16:39:20 UTC (8 years 7 months 3 weeks 2 days ago) and read 40804 times:

 Quoting Lrgt (Thread starter):I've heard 'rumors' as to the fuel burn on a few aircraft verbally over the years... is this at all accurate?

It seems in the right ballpark, but don't forget that fuel burn is a very strong function of engine, altitude, weight, speed, and drag, all of which vary from flight to flight and aircraft to aircraft.

Tom.

 Pilotboi From United States of America, joined Sep 2007, 2366 posts, RR: 9 Reply 2, posted Fri Oct 12 2007 16:55:23 UTC (8 years 7 months 3 weeks 2 days ago) and read 40804 times:

 Quoting Tdscanuck (Reply 1):all of which vary from flight to flight and aircraft to aircraft.

And during a given flight as well.

 Peh From Australia, joined Nov 2006, 340 posts, RR: 0 Reply 3, posted Sat Oct 13 2007 23:12:47 UTC (8 years 7 months 3 weeks 18 hours ago) and read 40576 times:

 It would be really good to see these figures broken down to a per-seat figure. I'm really interested to know which comercial aircraft is the most efficient (overall).
 Flown: ATR72, DASH 8, 737, 747, 767, 777, A300, A320, A321, A330, A340, MD80
 MEA-707 From Netherlands, joined Nov 1999, 4578 posts, RR: 31 Reply 4, posted Sun Oct 14 2007 03:10:10 UTC (8 years 7 months 3 weeks 14 hours ago) and read 40484 times:

 Quoting Lrgt (Thread starter):Also, if props are much more efficient on short flights, what reasons make Aloha use 737-200's on 50-mile interisland flights and Laker Airways use a 727-200 for FLL-FPO?

Fuel is, even now with the high prices, only one of the reasons to use one aircraft or the other.
- Jets are more popular with passengers, Aloha might loose pax to Hawaiian and others if they switch to props.
- Jets can take more pax and cargo, even with double flights on say an ATR-72 they can't carry the same amount of cargo.
- They have the jets in the fleet anyway, so in short term it would be more expensive to pick up a prop plane and park the jet, in that case the total opportunity costs (write off, lease, fuel, staff) of the prop is higher.
- the old 727 and 737-200 you mention are economically almost written off, so acquisition or lease costs shouldn't be too hhigh and would offset the fuel bills. See NW with their DC-9 while rejecting some A-319s and A-320s.

 nobody has ever died from hard work, but why take the risk?
 FlyingAY From Finland, joined Jun 2007, 760 posts, RR: 0 Reply 5, posted Sun Oct 14 2007 03:50:09 UTC (8 years 7 months 3 weeks 13 hours ago) and read 40437 times:

 There was recently a thread about LHs reported fuel consumption numbers. But of course you have to keep in mind that mission, seat configuration, cargo etc. all affects these numbers. LH: New Fuel Consumption Data: 333 Beats 343! (by SailorOrion Jul 19 2007 in Civil Aviation)
 Tdscanuck From Canada, joined Jan 2006, 12710 posts, RR: 78 Reply 6, posted Sun Oct 14 2007 10:48:26 UTC (8 years 7 months 3 weeks 6 hours ago) and read 40246 times:

 Quoting Peh (Reply 3):I'm really interested to know which comercial aircraft is the most efficient (overall).

At the moment, a full A380 should beat everything else in the sky on a per-seat fuel consumption basis (for a jet).

The 747-8i may catch it, although that's not clear.

Keep in mind, you're talking just about fuel efficiency. The A380 probably isn't the cheapest per seat.

Tom.

 UN_B732 From United States of America, joined Jul 2001, 4297 posts, RR: 4 Reply 7, posted Sun Oct 14 2007 20:42:20 UTC (8 years 7 months 2 weeks 6 days 20 hours ago) and read 40049 times:

 Could the DC9-50 really be more efficient than the 738? -A
 What now?
 WingedMigrator From United States of America, joined Oct 2005, 2372 posts, RR: 56 Reply 8, posted Sun Oct 14 2007 21:05:45 UTC (8 years 7 months 2 weeks 6 days 20 hours ago) and read 40024 times:

 Quoting Peh (Reply 3):It would be really good to see these figures broken down to a per-seat figure. I'm really interested to know which comercial aircraft is the most efficient (overall).

Here's a summary chart, estimated for a 6000 nm sector loaded at 1 pax / m2 of cabin floor area.
 The evolution of fuel burn, at 1 pax / m2, with more types added

For a full explanation of all the assumptions (and there are many), see:
Fuel Burn - How They Stack Up (by WingedMigrator Aug 4 2007 in Tech Ops)?searchid=199839

 Flighty From United States of America, joined Apr 2007, 10114 posts, RR: 3 Reply 9, posted Sun Oct 14 2007 21:29:28 UTC (8 years 7 months 2 weeks 6 days 19 hours ago) and read 40000 times:

 Those stats look like reasonably good approximate values per scheduled hour. So on a 16 hour 777 flight, they count the gallons burned, and divide by 16. Note, the aircraft usually only spend 14 hours in the sky. And, the first hour is by far the most fuel consumptive. The best way to model fuel burn is xxx gallons in 1st flight hour + xxx for each additional hour. Even this isn't perfect, but it avoids some problems. You can't expect a 757 to make a 1 hour flight on 900 gallons of fuel, for example (I am thinking closer to 1900). Dispatch mavens will know way more than me on this. Edit: I would say those DC-10 and 747 burn rates look a little high. The 747 has 14 hours of duration on 50,000 gal, so that gives us around 3,000 gph, with the D10 probably more like 2400. Again, that's only guessing.[Edited 2007-10-14 21:31:08]
 Acey From Canada, joined Jun 2007, 1116 posts, RR: 0 Reply 10, posted Sun Oct 14 2007 22:37:26 UTC (8 years 7 months 2 weeks 6 days 18 hours ago) and read 39953 times:

 Quoting MEA-707 (Reply 4):Jets are more popular with passengers

Except for that relatively large percentage of people who would rather fly on a Q400 than an RJ.

 If a man hasn't discovered something that he will die for, he isn't fit to live. -- Martin Luther King, Jr.
 Cobra27 From Slovenia, joined May 2001, 1103 posts, RR: 0 Reply 11, posted Sun Oct 14 2007 22:44:16 UTC (8 years 7 months 2 weeks 6 days 18 hours ago) and read 39944 times:

 Quoting Peh (Reply 3):It would be really good to see these figures broken down to a per-seat figure. I'm really interested to know which comercial aircraft is the most efficient (overall).

try lufthansa annual report on their website, you will be surprised. I think A330 for condor leads with less than 3 liters/100km

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