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F-22 internal fuel?



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qwe2008
PostPosted: Sep 25, 2010 - 05:11 AM Reply with quote Back to top
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http://0x4d.net/files/AF1/R11%20Segment%2012.pdf

3082 gallon, 20,000Ib?



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Last edited by qwe2008 on Sep 25, 2010 - 07:59 AM; edited 2 times in total
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Last edited by qwe2008 on Sep 25, 2010 - 07:59 AM; edited 2 times in total
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popcorn
PostPosted: Sep 25, 2010 - 06:23 AM Reply with quote Back to top
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I got 3581.4 gallons internal capacity adding up all the internal fuel cells (transfer and feed).
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flyboy22
PostPosted: Sep 25, 2010 - 06:07 PM Reply with quote Back to top
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nope about 18k internal, 26k with two bags.
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BDF
PostPosted: Sep 25, 2010 - 09:00 PM Reply with quote Back to top
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Yep, the official count is 18,448lbs internal. Not quite sure why the TechOrd shows something different unless one of the smaller tank groups has been intentionally deactivated somehow for some reason. It seems to odd to me too that an official pub was that far off.

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djcross
PostPosted: Sep 26, 2010 - 04:18 AM Reply with quote Back to top
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Usable fuel + ullage volume + unusable fuel = tank internal volume
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JetTest
PostPosted: Sep 26, 2010 - 10:14 AM Reply with quote Back to top
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It looks like the last notes above are talking gallons vs pounds
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sprstdlyscottsmn
PostPosted: Sep 26, 2010 - 04:43 PM Reply with quote Back to top
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I think djcross has it, the other 1600lbs is unusable fuel that will be trapped in the system even if the engines are starved.

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sferrin
PostPosted: Sep 26, 2010 - 07:25 PM Reply with quote Back to top
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sprstdlyscottsmn wrote:
I think djcross has it, the other 1600lbs is unusable fuel that will be trapped in the system even if the engines are starved.


That's sounds like lousy design since you've effectively added 1600lbs of ballast.

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shingen
PostPosted: Sep 27, 2010 - 03:33 AM Reply with quote Back to top
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Heat sink?
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lampshade111
PostPosted: Sep 27, 2010 - 04:59 AM Reply with quote Back to top
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I've heard numbers ranging from 18,000 to 21,000.
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flyboy22
PostPosted: Sep 27, 2010 - 02:34 PM Reply with quote Back to top
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lampshade111 wrote:
I've heard numbers ranging from 18,000 to 21,000.


It's 18,000 pounds internal. It's all usable if all the fuel pumps are operating normally.
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