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How to employ the External Transfer switch?


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Posted

Hello,

I've read the manual, but I'm unable to deduct on which conditions should I select either position of this switch ... when should I select WING/CTR, and when should I use CFT?  Does anyone knows about this?

 

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Thanks a lot for any help with this 🙏

 

Eduardo

 

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Posted

If you have wing or centerline external tanks installed set the switch to WING CTR. If those tanks are empty or you do not have them installed, set the switch to CONF TANK.

This switch determines the priority of feeding from these sources and should be set to match the config of the jet. The fuel will still feed if the switch is positioned incorrectly (you set the switch to WING CTR with no external tanks installed) however there may be a cyclic process that depletes your internal fuel by a 1000 lbs or so before it kicks the Conformal tanks to feeding.

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Posted
17 minutes ago, KlarSnow said:

If you have wing or centerline external tanks installed set the switch to WING CTR. If those tanks are empty or you do not have them installed, set the switch to CONF TANK.


Thanks a lot for the quick answer 👍 very helpful.

 

Cheers, Eduardo.

 

For work: iMac mid-2010 of 27" - Core i7 870 - 6 GB DDR3 1333 MHz - ATI HD5670 - SSD 256 GB - HDD 2 TB - macOS High Sierra

For Gaming: 34" Monitor - Ryzen 3600 - 32 GB DDR4 2400 - nVidia RTX2080 - SSD 1.25 TB - HDD 10 TB - Win10 Pro - TM HOTAS Cougar

Mobile: iPad Pro 12.9" of 256 GB

Posted

To add to what Klar already stated, the switch position defines the auto-transfer sequence of what is considered external fuel.  In wing/ctr, the ext tanks are primary and CFTs back that up. For CFT, the opposite occurs. The ‘backup’ is related to tank 1 fuel levels. In terms of DCS at the moment, its not implemented yet so it always goes ext wings first then CFTs, but its on the list for implementation.  

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Posted
5 minutes ago, Rainmaker said:

To add to what Klar already stated, the switch position defines the auto-transfer sequence of what is considered external fuel.  In wing/ctr, the ext tanks are primary and CFTs back that up. For CFT, the opposite occurs. The ‘backup’ is related to tank 1 fuel levels. In terms of DCS at the moment, its not implemented yet so it always goes ext wings first then CFTs, but its on the list for implementation.  

I did fly a mission the other day where it seemed to drain from both the external wing tanks and the CFTs at the same time. I had to specifically stop transfer from the CFTs to get the externals to drain first. Is that a bug then?

Posted
18 minutes ago, Rainmaker said:

To add to what Klar already stated, the switch position defines the auto-transfer sequence of what is considered external fuel.  In wing/ctr, the ext tanks are primary and CFTs back that up. For CFT, the opposite occurs. The ‘backup’ is related to tank 1 fuel levels. In terms of DCS at the moment, its not implemented yet so it always goes ext wings first then CFTs, but its on the list for implementation.  

 

Thanks to you too, for the added details ... the helpful nature of this Forum really shines on threads like this 🙏 🙂 

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For work: iMac mid-2010 of 27" - Core i7 870 - 6 GB DDR3 1333 MHz - ATI HD5670 - SSD 256 GB - HDD 2 TB - macOS High Sierra

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Mobile: iPad Pro 12.9" of 256 GB

Posted
1 hour ago, LazyBoot said:

I did fly a mission the other day where it seemed to drain from both the external wing tanks and the CFTs at the same time. I had to specifically stop transfer from the CFTs to get the externals to drain first. Is that a bug then?

No. Its not. As above, the system is not implemented yet. 

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