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Forum: Tech Log

2nd Apr 2017, 03:09

Replies: 11

747-400 fuel tank temperature question

Views: 10,503

Posted By B2N2

And I'd like to know the engineering/design...

And I'd like to know the engineering/design reason that prevents it from happening.
Somebody with a slide rule and a pocket protector thought of this and came up with a solution.
I'd like to know...

Forum: Tech Log

1st Apr 2017, 17:46

Replies: 11

747-400 fuel tank temperature question

Views: 10,503

Posted By B2N2

Also true but the term 'system logic' seems to...

Also true but the term 'system logic' seems to create a discontinuity in my understanding of a system.
I'd rather hear the number followed by "nice to know" then not hear the number.
I'd rather...

Forum: Tech Log

1st Apr 2017, 13:37

Replies: 11

747-400 fuel tank temperature question

Views: 10,503

Posted By B2N2

Physically where does the reserve fuel enter the...

Physically where does the reserve fuel enter the 2&3 tank?
Close to the hydraulic/fuel heat exchangers?
I'm just fascinated by what 'they' don't bother telling us.

Forum: Tech Log

1st Apr 2017, 01:43

Replies: 11

747-400 fuel tank temperature question

Views: 10,503

Posted By B2N2

True. But how do we know we're not dumping...

True.
But how do we know we're not dumping slush into 2&3?
Part of the problem with the 777 were stagnant 'dead' zones in the tank where slush could accumulate.
Does the 747 have 'stirrers' in the...

Forum: Tech Log

31st Mar 2017, 21:12

Replies: 11

747-400 fuel tank temperature question

Views: 10,503

Posted By B2N2

747-400 fuel tank temperature question

Ok so in accordance with the fuel card logic the reserve tank will gravity feed into Main Tank 2 and Main Tank 4 when their respective quantity drops below 18,200kgs.

Ok got that part.
Fuel...

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