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 10 707 and fuel distribution (Read 21815 times)
Markoz
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Re: 707 and fuel distribution
Reply #15 - May 17th, 2012 at 2:17am
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Thanks Lou.

I never thought about the fact that you could risk having the fuel go overboard out the vent! Shocked
  

Mark Fletcher



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LOU
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Re: 707 and fuel distribution
Reply #16 - May 17th, 2012 at 3:18pm
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Mark,

The small reserve tanks on each wing tip just gravity feed into their respective main tank.

The fact that they are just a bit higher due to wing dihedral is what makes that possible.

I often wondered if I opened the reserve crossfeed with a full main what would happen.

The handbook logic was that there needed to be enough room in the main for the fuel to fit into the tank.
Since the fuel vent is right at the wing tip it is logical that fuel could leak out, but I never tried it!  Shocked

Lou
  

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Markoz
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Re: 707 and fuel distribution
Reply #17 - May 18th, 2012 at 4:24am
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LOU wrote on May 17th, 2012 at 3:18pm:
Mark,

The small reserve tanks on each wing tip just gravity feed into their respective main tank.

The fact that they are just a bit higher due to wing dihedral is what makes that possible.

I often wondered if I opened the reserve crossfeed with a full main what would happen.

The handbook logic was that there needed to be enough room in the main for the fuel to fit into the tank.
Since the fuel vent is right at the wing tip it is logical that fuel could leak out, but I never tried it!  Shocked

Lou

That old saying of "It is better to be safe, than sorry" is a good way of looking at it! Grin
  

Mark Fletcher



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daveduck
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Re: 707 and fuel distribution
Reply #18 - Sep 9th, 2013 at 9:47pm
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Great stuff.  I could listen to 707 specs all day... Cheesy
  
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harerton
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Re: 707 and fuel distribution
Reply #19 - Jul 21st, 2016 at 10:20pm
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Hi everybody,

I am just starting with CS707 and I'm still learning it.

I have written fuel system tutorial for the Historic Jetliners Group with many guidelines on how to manage the 707 fuel system.

It is avaliable at simviation.com/hjg/panels/boeing/707fueltut.zip
  

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trevors
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Re: 707 and fuel distribution
Reply #20 - Jan 20th, 2017 at 3:25pm
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Great explanation. Thanks
  


Trevor
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