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B-52 Driver >> B-52 Driver >> Fuel Order
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Message started by crashbar on Feb 26th, 2011 at 11:40pm

Title: Re: Fuel Order
Post by HvyEng on Mar 22nd, 2011 at 7:38pm
I have been building a fuel panel mod with a visual usage tree similar to the -1, I should hopefully have it posted by the end of this week.

First and foremost, it is critical that you install my updated fuel panel textures, they have the correct flowlines and flowbars. The additional fuel panel camera also makes control much easier. (Remember, source-force-and-a-place-to-go)

Second, you can feed any engine from any tank, the only exception that I have found is the aft body tank. For some reason Pylon 3 will shut down if the main pumps are off and it is the only tank available. (Remember, source-force-and-a-place-to-go)

Third, using this acft.cfg fuel tank setup:
[fuel]
//Tank, Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
LeftAux   =    -14.0,  -52.14,   -6.8,   4905.0,    6.0 //No. 1 Main
RightAux  =    -14.0,   52.14,   -6.8,   4905.0,    6.0 //No. 4 Main
LeftMain  =      5.6,  -25.68,   -4.3,   6834.0,   25.0 //No. 2 Main
RightMain =      5.6,   25.68,   -4.3,   6834.0,   25.0 //No. 3 Main
LeftTip   =    -31.46, -78.9,    -8.9,   1160.0,    7.0 //Left Outboard Wing
RightTip  =    -31.46,  78.9,    -8.9,   1160.0,    7.0 //Right Outboard Wing
Center1   =     16.4,    0.0,   -12.3,   2053.0,    4.0 //Fwd Body
Center2   =      7.2,    0.0,   -12.3,   3240.0,   12.0 //Center Wing
Center3   =     -6.7,    0.0,   -12.3,  15652.0,   21.0 //Mid + Aft Body
External1 =    -23.0,  -77.3,   -11.5,    705.0,    5.0 //Left External
External2 =    -23.0,   77.3,   -11.5,    705.0,    5.0 //Right External

and the -1 fuel usage sequence, the CS B-52 will follow a perfect tech-order fuel burn. It is actually really impressive when you get it right. NOTE:  drop the “Center 3” to 80% in the fuel and payload window prior to takeoff or you will be overweight.

And finally fourth, the ultra-simplified overall concept for the B-52 fuel burn is:

Rules:
1) Main pumps always stay on
2) Main valves (19,20,21,22) always stay closed
3) Crossfeeds (9,10,11,12) stay closed (horizontal) unless any main tank is below 5K

Sequence (Remember, source-force-and-a-place-to-go) :
CTR and AFT to Pylon 1 and 4 -- MAIN 2 and 3 to own pylon for takeoff
On climbout:
AFT and CTR to all pylons till CTR is empty,
AFT and FWD to all pylons till FWD is 3K
AFT and MID (same tank in FSX) till 6K each
AFT and MID to pylons 1 and 4, MAIN 2 and 3 to own pylons till AFT and MID are empty
Mains to each pylon till Green band on MAIN 1 and 4 (10K)
L + R external  to 1 + 4 pylon (respectively) till empty
L + R outboard to 1 + 4 pylon (respectively) till mains are even (10K each)
L + R outboard and FWD to all pylons till empty
Each MAIN to own pylon till 5K
Below 5K in any MAIN, all system valves closed, crossfeeds (9,10,11,12) open (vertical)

For ALL landings / touch and goes (regardless of weight). Takeoffs may be made in this configuration also.
Each MAIN to own pylon till 5K
Below 5K in any MAIN, all system valves closed, crossfeeds (9,10,11,12) open (vertical)

--Dan

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