Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
B733 Fuel Consumption  
User currently offlineLMML 14/32 From Malta, joined Jan 2001, 2565 posts, RR: 6
Posted (9 years 1 month 1 week 5 days 16 hours ago) and read 3541 times:

Recently we had this 75 minute flight with a payload of just 3000kg where we burned 3100Kgs of fuel. On the way back, same flying time, our payload was 14,000Kgs and the burnoff was just 250Kgs more than the other sector. Can anyone explain this please? How much fuel does a B733 burn in the climb?

7 replies: All unread, jump to last
 
User currently offlineWILCO737 From Greenland, joined Jun 2004, 9032 posts, RR: 75
Reply 1, posted (9 years 1 month 1 week 5 days 15 hours ago) and read 3529 times:
AIRLINERS.NET CREW
HEAD MODERATOR

hi LMML,

Quoting LMML 14/32 (Thread starter):
How much fuel does a B733 burn in the climb?

I dont know the exact amount of the climb fuel, I am no dispatcher, I just fly the 737! And when we calculate fuel, we use 40 kgs/min (2400kgs/hour).

WILCO737
 airplane 



It it's not Boeing, I am not going.
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2556 posts, RR: 24
Reply 2, posted (9 years 1 month 1 week 5 days 14 hours ago) and read 3519 times:

The extra fuel burn is going to be related to the total weight of the aircraft, not just the difference in payload.

Also, on your return trip you were presumably carrying 3,100 Kg less fuel.



The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlineLMML 14/32 From Malta, joined Jan 2001, 2565 posts, RR: 6
Reply 3, posted (9 years 1 month 1 week 5 days 12 hours ago) and read 3502 times:

Actually on the return trip we were carrying just 300Kgs more than the outbound. I can understand that fuel burn is related to the total weight but the total weight is determined by the payload and on our return trip we were 11,000Kgs heavier.

User currently offlineBarney Captain From United States of America, joined Nov 2001, 965 posts, RR: 13
Reply 4, posted (9 years 1 month 1 week 4 days 18 hours ago) and read 3433 times:

Many other factors could have affected the burn. The two most likely are speed and altitude.


...from the Banana Republic....
User currently offline3201 From , joined Dec 1969, posts, RR:
Reply 5, posted (9 years 1 month 1 week 4 days 14 hours ago) and read 3410 times:

Here are a few other factors that can play a role:

1. Winds, east vs. west bound
2. Actual distance flown -- especially in Europe, with both standard and tactical restrictions, the distance can vary quite a bit directionally on a city pair
3. Speed flown (late outbound but OK return? Restricted by ATC in one direction?)
4. Altitude flown (either intentionally for speed purposes, or due to ATC restrictions or weather)
5. Maneuvering on approach (or even departure) -- for traffic or other issues, can make a big difference, also early descent/leveloff into some airports can be severe and others nonexistent, runways can make a difference (e.g. if both airports have 09 active, eastbound flight can be much shorter than westbound, depending on the arrivals/departures for the specific airports)

Also did you count the taxi burns as well? Were the taxi times similar?

Big thing is knowing the actual distance, speed, and altitude for each direction.


User currently offlineLMML 14/32 From Malta, joined Jan 2001, 2565 posts, RR: 6
Reply 6, posted (9 years 1 month 1 week 4 days ago) and read 3362 times:

I know that the taxi time were the same at both airports and that 200Kgs was allowed for that. The flight conditions were also the same. Altitude only differed by 1000ft. There were no significant winds, in fact the wind was x and light all the way in both directions and no weather avoidance was required. I will take other readings on different flights to check the variance and post here.

User currently offlineFly707 From United States of America, joined Oct 2001, 350 posts, RR: 0
Reply 7, posted (9 years 1 month 6 days 13 hours ago) and read 3231 times:

LMML 14/32 can you explain the flowing :

-Exact route.
-A/C registration in every sector.

I agree with 3201 specially 5th item .

Also don't forget the material oldness, may be one was older than the other .

Regards.



Without mistakes we will never learn
Top Of Page
Forum Index

Reply To This Topic B733 Fuel Consumption
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Total Fuel Consumption For Two Segments? posted Sun Nov 12 2006 23:32:08 by WestWing
B767-200 Fuel Consumption Question posted Sun Nov 12 2006 07:06:31 by Jetline
Thrust Specific Fuel Consumption (B737 & CFM56-7) posted Wed Jul 5 2006 11:58:51 by Kaddyuk
Fuel Consumption As Aircraft Ages posted Thu May 11 2006 02:01:13 by AirplaneCrazy
Passenger Airplane Fuel Consumption posted Thu May 4 2006 04:42:38 by PropilotJW
DC-9 And MD-8 Fuel Consumption posted Thu Feb 23 2006 06:04:22 by Rottamo
Fuel Consumption To Cruising Altittute posted Sun Feb 19 2006 19:16:27 by Ultrapig
Effect Of Temperature On Fuel Consumption & Height posted Sat Dec 24 2005 16:48:29 by Julesmusician
DC-8 Fuel Consumption posted Mon Sep 5 2005 10:51:27 by ChiefT
777-200 V/s 777-200ER Fuel Consumption posted Thu Mar 10 2005 21:04:12 by WestWing

Sponsor Message:
Printer friendly format