Is there a way to transfer fuel by docking?

[Claas2008]

I want to make an orbital aircraft carrier that has a ton of fuel to refill rockets and satellites but I don't know how I can transfer fuel when docked.

[Caerfinon]

2 minutes ago, Claas2008 said:

how I can transfer fuel when docked.

The stock method is described here: Tutorial:Refueling in space  Step #4 is what you are looking for. 

There are mods like TAC Fuel Balancer that make the task easy. 

Choice is yours 

[Claas2008]

49 minutes ago, Caerfinon said:

The stock method is described here: Tutorial:Refueling in space  Step #4 is what you are looking for. 

There are mods like TAC Fuel Balancer that make the task easy. 

Choice is yours 

It's not exactly what I was thinking, but it works. I was thinking that a spaceship docked onto the carrier and that fuel then transfered.

[Caerfinon]

3 minutes ago, Claas2008 said:

I was thinking that a spaceship docked onto the carrier and that fuel then transfered.

The mod route would be the easiest way to get the closest to your goal 

[Geonovast]

It's no different than transferring fuel within a single craft.  Once docked, the game treats the docked vessels as one single ship.

What might be tripping you up is if you have the "Fuel transfer obeys crossfeed rules" option checked in your difficulty settings.  This will prevent you from transferring fuel across parts that prevent crossfeed (like heatshields) or parts that have crossfeed turned off (like docking ports frequently do).  If it's just the docking ports between them, just make sure you have crossfeed enabled on both docking ports, and then you should be able to transfer.  You can do this in flight, although I don't remember if crossfeed settings are hidden behind the advanced tweakbles setting.  You can also enable that in flight, if needed.

You should also be able to toggle the difficulty setting if you need.

[Superfluous J]

Look into the mod gpo fuel pumps.

 

 

[zer0Kerbal]

Also look at SimpleLogistics (SLOG)..