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767 Captain (FSX) >> 767 Captain (FSX) >> Working out fuel quantity https://www.captainsim.org/forum/csf.pl?num=1300870950 Message started by lucasgozzard on Mar 23^rd, 2011 at 9:02am

Title: Working out fuel quantity
Post by lucasgozzard on Mar 23^rd, 2011 at 9:02am

Hey folks!! I was wondering if anyone knew how to calculate the fuel quantity roughly accurate in the 767 because everytime I put in ZFW, it says invalid entry. So maybe the ZFW and fuel onboard doesn't make sense? Hope someone can help! Cheers.

Title: Re: Working out fuel quantity
Post by CoolP on Mar 23^rd, 2011 at 9:45am

Welcome, lucasgozzard. :)
Is it possible that you are mixing up the definition of ZFW? This would lead you to wrong numbers and the FMC to define those wrong values as invalid entries then.
The ZFW is your empty weight + passenger and payload (usually summarized as "payload" in FSX).

Maybe this tutorial can help you too. http://www.captainsim.org/yabb2/YaBB.pl?num=1220997876

Title: Re: Working out fuel quantity
Post by TurbofanDude on May 13^th, 2011 at 7:42pm

The ZFW, or Zero Fuel Weight, is the weight of the plane itself (empty weight) plus the payload (cargo+pax).

The ZFW is put into the FMC as a XXX.X number, and is abbreviated by hundreds, SO,

empty weight (these are NOT real numbers, just examples) is 145,334LBS

payload is 32,029LBS, the total weight without fuel would be 177,363. Now, this would be put in as 177.4. You round up to the nearest hundred, and that becomes the number in the decimal place.

When the FMC yhas the ZFW, the fuel is automatically calculated, as well as a bunch of other valuable performance info.

I hope that helps!

Title: Re: Working out fuel quantity
Post by DAL 191 on May 14^th, 2011 at 6:58am

TurbofanDude wrote on May 13^th, 2011 at 7:42pm:

When the FMC yhas the ZFW, the fuel is automatically calculated

I hope that helps!

Are your sure about this?

Thank you
Michael Cubine