Mechanos Posted June 18, 2012 Share Posted June 18, 2012 And what can I do to get around this? I built a nice little test space plane. But until functionality is added to turn off rocket engines, just like air engines, I need to decouple my main engine when I re-enter the planet. But here\'s the problem. I assumed fuel transferred through the decoupler, like the tri-decoupler. But when I got high enough that my air engines cut out and tried to turn on my main engine, I got nothing! Rocket engine sputtered once then wouldn\'t turn on.My space plane is very small. So I need to find a minimalistic way to get fuel to my engine. I assume I should run some fuel lines to it, but.. so far I can\'t figure it out. I tried running fuel lines directly to the decoupler, didn\'t work. Tried running it directly to the rocket engine, but I\'m unsure that\'s allowed. Or the decoupler obstructed the line\'s attachment. Any ideas? Link to comment Share on other sites More sharing options...
Misterspork Posted June 18, 2012 Share Posted June 18, 2012 The standard decoupler doesn\'t allow fuel through it because then the stages on a regular rocket would suck out the fuel of stages above them .What you can do is, either cfg edit the StackDecoupler in your parts folder to allow fuel crossfeed, or...Have a fuel tank off to the side that you run fuel to, then run a fuel line from that side fuel tank to the engine. Yes, connecting lines directly to engines is allowed. Link to comment Share on other sites More sharing options...
Anachronda Posted June 18, 2012 Share Posted June 18, 2012 The standard decoupler doesn\'t allow fuel through it because then the stages on a regular rocket would suck out the fuel of stages above them .So Kerbal technology hasn\'t invented the flapper valve yet? There\'s some fan fiction in there somewhere, but I\'m not clever enough to write it. Link to comment Share on other sites More sharing options...
Kosmo-not Posted June 18, 2012 Share Posted June 18, 2012 Connect a fuel line to the decoupler from the tank above it. That will solve your problem. Link to comment Share on other sites More sharing options...
Mechanos Posted June 18, 2012 Author Share Posted June 18, 2012 Have a fuel tank off to the side that you run fuel to, then run a fuel line from that side fuel tank to the engine. Yes, connecting lines directly to engines is allowed.I ended up running a fuel line to my landing gear, then to my rocket engine. Seems to have worked. That is, \'till some sort of bug hit me. I hit M to view the map to see how big my orbit was getting, hit M to go back, and my engine quit. Dunno why, had fuel, didn\'t notice any damage. If I can reproduce it, I\'ll post it in the dev section.Connect a fuel line to the decoupler from the tank above it. That will solve your problem.That was the first thing I tried, and it didn\'t work. I\'ll try it again just to be 100% sure, as that would be a lot easier than running it through my landing gear like I currently am doing lol.Thx for responses. Link to comment Share on other sites More sharing options...
Corax Posted June 18, 2012 Share Posted June 18, 2012 Connect a fuel line to the decoupler from the tank above it. That will solve your problem.That was the first thing I tried, and it didn\'t work. I\'ll try it again just to be 100% sure, as that would be a lot easier than running it through my landing gear like I currently am doing lol.Thx for responses.It does. See attached craft. Link to comment Share on other sites More sharing options...
Sean Mirrsen Posted June 18, 2012 Share Posted June 18, 2012 If you value aesthetics more than simplicity and are willing to do some uncanny manipulations, you can just pass a fuel line straight through the decoupler.First, radial-mount something long to the side of the fuel tank you want to use, like a pair of structural fuselages. Radial-mount the other fuel tank you want to connect to (or from) onto said something, so that it is directly under the first fuel tank. Now run a fuel line between the two, dead center. Now, detach the lower tank and set it aside. Detach the structural fuselages (or whatever you used as a bridge) and discard them. Attach the stack decoupler under the first tank. If it appears red, make sure the other tank is positioned directly below, so that the 'imaginary fuel line' between the tanks runs straight through the empty space inside the decoupler. Now attach the other tank to the decoupler. Voila, you\'re set.If you need to use the setup more than once, begin the ship\'s design by setting it up and then setting the completed junction aside for later use.Stock stack decouplers can be used to hide a variety of things, my favorite being RCS thrusters. Now, if only they could conceal parachutes... Link to comment Share on other sites More sharing options...
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