Fuel Burns

[The Real Slim Shady]

I've tried the search function but can't find any definitive info on fuel burns per hour ( or minute ) in Kgs for commercial aircraft.

Could you folks oblige from your own experience?

I'm looking to compare the 737-800 (approx 2100 kgs per hr ) with the 757 and A320 / 321.

I'd also like comparitive data,if you can oblige, for the MD 11, 747 - 200 /300/400, 767-200/300 and the A330 and 340.

Thanks.

[TopBunk]

For all aircraft, the fuel burn will be a function of several items, the most noticeable one to affect it (at cruising altitude) will be the weight. The lighter the lower the fuel burn.

You may need to specify more precisely what you want - eg. from a max weight take off at initial optimum cruise alt at standard ISA conditions. If you don't do this then you are likely to get numbers that are not comparable, imho.

[The Real Slim Shady]

Apart from the heavy jets where the burn will vary dramatically as weight reduces and altitude increases the effect will not be large between Max AUW and MLW. 12 tonnes in the first hour and 10 tonnes an hour and then 8 tonnes in the last hour is just what I need, or an average of 10.5 tonnes per hr.

All I'm after are some "ballpark" figures: the 738 burn will vary between 1950Kgs per hr to 2500 kgs per hr. However, the average ( average weight / average day / average cruise level / etc) is about 2100 kgs per hour ( it burns more in hour 1 than hr 2 due to climb and less in hr X due to descent).

If you were a new F/O and asked a TC "What does it burn an hour?" you would get an average answer; that's all I need for the time being.

[flugholm]

And for the more exotic ones...:
http://www.pprune.org/forums/showthread.php?t=201936

"The search function saves lives," someone said... :ok:

[qwertyuiop]

757 varies from 5 1/2 tonnes to 7 tonnes per hour.

[Pub User]

qwerty

Do you keep the gear down or something?

The 757s I fly use around 3600kg per hour in the cruise, at shorthaul weights. The 767s vary more due to their greater weight range, but normal cruise would be around 4500kg per hour.

[Georgeablelovehowindia]

Yes, qwerty's 757 fuel burn is far too high. The 535E4 powered version was just capable of an 8 hour airborne sector - e.g. BAH-MAN - with a full pax load of 236 and diversion to LPL. We couldn't quite get 'full tanks' - 34700kg - either, so that suggests an average hourly burn of 3800kg.:ok:

[qwertyuiop]

Totally agree with 2 posts above, must have been a long day.

The figures I work on are 3 tonnes per hour (very light) to 4 tonnes per hour (heavy).

Sorry:ugh: