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kcgb avatar image
kcgb asked kcgb commented

Fuel Line Questions

In the new fuel systems is it possible to have multiple fuel lines going to / or coming from a valve?

I currently have a setup of a low-pressure pump and a high-pressure pump going to an engine valve. and from the valve, it goes to the engine and crossfeed valve. The crossfeed valve is also set up with 2 inputs and 2 outputs.

The system isn't working and I'm assuming it's because of this.

Should I be using junctions for this purpose instead?


The Image is a little out of date, the tanks are all just gravity feed with valves in between for simplification now. but the general idea is the same as the current setup.

fuel-system.png (118.1 KiB)
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1 Answer

FlyingRaccoon avatar image
FlyingRaccoon answered kcgb commented

Hello @kcgb

Yes you can have multiple lines going to/from a valve.

The potential issue I see with your design would be bringing fuel to engine/APU by gravity. This will not work and these components need a pump.
For now, gravity can only be used to transfer fuel between tanks.

As for your "new setup", just be aware we have a bug in SU9 where fuel flow will drop if one of the output lines is closed. This will be fixed with SU10.


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Hello @kcgb

My bad, it appears valves are limited to 2 lines. The information is missing from the doc. We'll add a table to provide this information in the doc.

So for the crossfeed valve, here are your options:


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1657283202411.png (53.6 KiB)
kcgb avatar image kcgb FlyingRaccoon ♦♦ ·
Thanks, I ended up implementing the "New Setup" and its works as expected so far.
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