Specific Gravity Question?
Thread Starter
Joined: Aug 2001
Posts: 79
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From: age
Specific Gravity Question?
Hello
I would like a clarification please.
1 USG = 6lbs - does this already take into account a SG of 0.72?
So for my calculations 34 USG = 204 lbs (34*6)
also is it correct to say 1 USG = 3.785 litres and therefore 34 USG = 128.69 litres?
(phew) Thank you in advance...
I would like a clarification please.
1 USG = 6lbs - does this already take into account a SG of 0.72?
So for my calculations 34 USG = 204 lbs (34*6)
also is it correct to say 1 USG = 3.785 litres and therefore 34 USG = 128.69 litres?
(phew) Thank you in advance...

Joined: Feb 2001
Aviation Qualifications: PPL
Posts: 1,222
Likes: 2
From: Worcestershire, UK
[Pedantic mode] Technically, it is incorrect to multipy volume by SG to determine weight. In reality however, the difference is so small for a/c-sized fuel volumes that it makes no practical difference. (quite a difference for VLCC's though
)
Assuming 1 USG = 6lb, then the density@15C of the fuel is 0.7201 and the SG@60F is 0.7203
[/Pedantic mode]
) Assuming 1 USG = 6lb, then the density@15C of the fuel is 0.7201 and the SG@60F is 0.7203
[/Pedantic mode]




