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How Many USG In A LB Of Fuel?  
User currently offlineLanPeru From Peru, joined Jun 2001, 645 posts, RR: 10
Posted (11 years 2 months 4 weeks 18 hours ago) and read 13372 times:

I was on the Boeing website and was looking at the 717 specs. and they give the fuel capacity in LBS what is the conversion?

9 replies: All unread, jump to last
 
User currently offlineJetguy From , joined Dec 1969, posts, RR:
Reply 1, posted (11 years 2 months 4 weeks 18 hours ago) and read 13355 times:

The fuel density is a function of temperature, but for Jet-A at normal temperatures the figure is about 6.7 pounds per gallon.

User currently offlineGoboeing From United States of America, joined Jun 2000, 2682 posts, RR: 14
Reply 2, posted (11 years 2 months 4 weeks 15 hours ago) and read 13253 times:

And AvGas is 6.0 lbs/gallon if anyone cares.

Nick


User currently offlineDC-10Tech From United States of America, joined Jun 2001, 298 posts, RR: 2
Reply 3, posted (11 years 2 months 4 weeks 15 hours ago) and read 13263 times:

Goboeing is correct, 6.7 to 6.8lbs per USG for Jet-A/JP-8.


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User currently offlineMikeclod From United States of America, joined Dec 2001, 272 posts, RR: 0
Reply 4, posted (11 years 2 months 4 weeks 14 hours ago) and read 13240 times:

A simple formula (for small to medium amounts) that is relatively accurate is 150g = 1000 lbs.
15g = 100 lbs
1500g = 10000
and so on. Start going over 20,000 to 40,000 lbs, and this starts to get pretty far off. The density can change quite a bit depending on temperature.
I've seen it as low as 6.55 and has high as 6.85.
Mikeclod


User currently offlineB747skipper From , joined Dec 1969, posts, RR:
Reply 5, posted (11 years 2 months 4 weeks 9 hours ago) and read 13230 times:

For you Gentlemen who prefer metric...
xxx
Densities to remember for fuels (weight of 1 liter of xxx at 15 deg. Celsius) -
Gasoline density is .69 (690 grams per liter)
JP-4 (Jet B) is .78
Jet A is .812
Jet A-1 is .813
xxx
Engines burn a weight of a given fuel to operate... so remember this... buy your gasoline for your car at the pump when it is cold (early morning) since you buy gasoline by volume... Example, Jet A fuel when warm might have a demsity of only .80, but could be .82 or .825 when cold...
xxx
Happy contrails  Smile
(s) Skipper


User currently offlineJet-a gasguy From United States of America, joined Dec 2000, 266 posts, RR: 2
Reply 6, posted (11 years 2 months 4 weeks 5 hours ago) and read 13217 times:

LanPeru-

Remember, this topic was discussed before. You asked this same question in this same forum on Sep. 8, 2002.

In case you missed it the first time you asked, here is the answer to your question.

You asked "How many USG in a LB of Fuel?"

If we're talking Jet-A and use the following:

1 gallon = 6.7 lbs.

Then that would equate to:

.15 gallons = 1 Pound(lb) of fuel

So, there are .15 gallons in a pound(lb) of fuel.

And guys, he's asking how many gallons in a pound of fuel, not how much does a pound of fuel weigh.

In Jet-A we trust....

Jet-A Gasguy




Find a job you love, and you'll never work a day in your life.
User currently offlineL-188 From United States of America, joined Jul 1999, 29784 posts, RR: 58
Reply 7, posted (11 years 2 months 4 weeks 5 hours ago) and read 13194 times:

Keep in mind that Gallons are a measure of volume while pounds are a measure of weight. So depending on the temperature of the fuel a gallon jug will weight different amounts.

Not a big deal with most light aircraft but one of the daily checks on the fuel farm was to measure the height of the fuel in the storage tanks. The difference in the height of fuel in a tank between morning and afternoon temps could be measured in feet on a tank that was not being used.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineMikeclod From United States of America, joined Dec 2001, 272 posts, RR: 0
Reply 8, posted (11 years 2 months 4 weeks 4 hours ago) and read 13181 times:

BTW the standard in the U.S. is 6.70 lbs per gal. at 60. deg. F.
Mikeclod


User currently offlineDC-10Tech From United States of America, joined Jun 2001, 298 posts, RR: 2
Reply 9, posted (11 years 2 months 3 weeks 6 days 17 hours ago) and read 13182 times:

How many people are going to answer this question with the same answer???? I think we've covered it.

I saw that he asked how many Gallons were in a lb of fuel... if he can't extract that from 6.7lbs/Gallon then he needs to go back to school.



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