Mod/method for post launch fuel switching?

[somewhatcasual]

Hello,

I was wondering if anyone knew of a mod or method which allows the type of stored fuel to be changed after launching the craft. An example would be using LFO in a multi fuel engine (think KSPI/Lite) and then landing on another body and mining for a different fuel and filling the tank? Ideally this would be based on storage volume and fuel density.

Thanks for the help

[NathanKell]

Welcome to the forums!

Not aware of one, sorry. Maybe someone else might know?

[Axelord FTW]

I remember a mod/part that could fit custom modded fuels and somesuchs but I don't think it could be changed post-launch.

EDIT: I'm sure it CAN be done, though.

Edited October 6, 2014 by Axelord FTW

[nli2work]

depends on the part and author setup. B9's tanks can be switched in Editor; but you can edit their configs and extend that ability to EVA as well. However the tank will lose whatever is left inside when you switch the fuel type.

[somewhatcasual]

Thank you everyone for the replies. I wasn't aware of B9's functionality. EVA would be a cool feature. I'll dig into it. I know Modular fuel systems can somewhat do this in the vab/sph but not after launch. Seems there is room for someone to develop a plugin for this, as it could potentially save weight for vessels, though perhaps not all that realistic.

Thanks again

[somewhatcasual]

depends on the part and author setup. B9's tanks can be switched in Editor; but you can edit their configs and extend that ability to EVA as well. However the tank will lose whatever is left inside when you switch the fuel type.

After looking at B9 cfgs, I've determined that they employ firespitter to accomplish fuel switching.

You were right about fuel being dumped when switched. This shouldn't pose a problem as long as it is not accidental. If one were fuel switching, it would be reasonable to expect a fuel supply to fully replace lost fuel. Below is an excerpt from the cfg.

Thanks for the tip. I use firespitter already, so this will help keep dependencies down.

// If true, the user can switch resource types while playing. This will empty out the tank. Makes sense for converting a tank from LiquidFuel to Kethane after landing a mining base for instance. Default is off of course.

availableInFlight = false