Jump to content

Fuel transfers through decoupler with crossfeed disabled


FuelX

Recommended Posts

  On 2/27/2023 at 2:27 AM, jfjohnny5 said:

At first I had solar panels radially attached, yes. I did remove those as well, but the issue persisted. I then made a brand new rocket following the exact same design.. and this time it was fine. So, it's everyone's favorite type of issue: intermittent.

Expand  

Yup. For the same vessel I quick loaded at different times to the same point

One time it wasn't draining the upper stage fuel

The next it was. Then it was again. Then it wasn't

Seems random :huh: No pattern

 

Link to comment
Share on other sites

  On 2/26/2023 at 2:44 AM, Macenzie said:

As Sea_Kerman says, it's most likely the landing struts causing the tank to drain.

Expand  

Hold on, you're telling me that the landing struts that i'm currently using are causing them to drain?

2 questions,

1.) how did you come to that conclusion?
2.) is it limited by a certain type of landing struts or are they just landing struts all around until the bug is fixed?

Link to comment
Share on other sites

There appear to be other parts that trigger this too, I had it happen with procedural farings

  On 2/27/2023 at 12:10 PM, Stringson said:

Hold on, you're telling me that the landing struts that i'm currently using are causing them to drain?

2 questions,

1.) how did you come to that conclusion?
2.) is it limited by a certain type of landing struts or are they just landing struts all around until the bug is fixed?

Expand  

I've tested it and found the same issue, removed the landing struts and the problem went away.

I believe I've tested the small and medium legs so far

Link to comment
Share on other sites

Alright I can confirm - it only happens  if you are using Medium Landing Legs (MD) AND Launch Clamps. Any other combination is just fine.

However Medium Landing Legs (MD) and Launch Clamps will cause your upper stage to be empty when its her time to shine. So only use one or the other until it's fixed.image.png

Link to comment
Share on other sites

  On 2/27/2023 at 4:12 PM, Blitzwing said:

Alright I can confirm - it only happens  if you are using Medium Landing Legs (MD) AND Launch Clamps. Any other combination is just fine.

However Medium Landing Legs (MD) and Launch Clamps will cause your upper stage to be empty when its her time to shine. So only use one or the other until it's fixed.

Expand  

In my testing, using a stock Kerbal-K2, all I had to do was add one Medium Landing Leg to break things: 

 

Link to comment
Share on other sites

  On 2/27/2023 at 4:15 PM, whatsEJstandfor said:

In my testing, using a stock Kerbal-K2, all I had to do was add one Medium Landing Leg to break things: 

 

Expand  

Interesting...

In my test setup I used all small parts - capsule (with parachute), fuel tank (with landing legs), terrier, decupler, fuel tank (with launch clamps), swivel

The bug occurred only on medium landing legs with launch clamps

But several events can cause the same bug. So we have at least two ways to break a rocket! :cool:

Link to comment
Share on other sites

Hello engineers,

i ve build a rocket with 3 stages (3 different engines and 3 different fueltanks). The first engine works well, just using fuel from his direct connected fuel tank. But the second engine also uses fuel from the third fuel tank not directly connected to it. I rebuild this rocket several times but always i ve the same problem. I don t know where i do the mistake. There are no fuel lines or anything else. Maybe someone has an advice?

https://imgur.com/a/CBm9Jc8

Link to comment
Share on other sites

×
×
  • Create New...