Decoupler bug

[Firemetal]

The Kraken doesn't want me to get this 3.75m tank to my station does it?

Anyways last week I started a game where I am completely vanilla, no mods not even KER so I have to calculate my own DV and TWR which is quite easy. Therefore this time, the thread is in the right place.

So I have a 3.75m tank with a medium sized docking port and four lights. I put it onto my proton rocket (You'll know what it looks like if you follow the "What did you do in KSP today?" thread) and the Kraken blew it up 3 seconds after launch. Trust me: I had auto-strutted every part.(Feel kind of bad for abusing that  ) Then I reverted and it was fine. I dock with the station and it blows up. Luckily I can revert so I did.

I decided to use a rocket that to me looks like a Delta IV. This one is a very reliable rocket and has lots of DV. I take it up first time, no Kraken attacks and decouple the lower stage, I then noticed when I was igniting the second stage that the engine was stuck to the lower stage. I had blown up the decoupler so it was just standing on the air between it and the second stage. I then reverted and tried to lift it with SRBs off the upper stage. No luck.

Here are some pics.

Without fairings.

The decoupler with the problem.

Bug or stupidity?

Fire

[Gaarst]

Fairing bases have additional nodes to add possibilities for payload attaching. I think your rocket engine is attached to the fairing base and not the decoupler.

Try removing the fairing base and what's below, reattach the decoupler and you should be fine. (If you're struggling finding which node is the right one, there is an option to disable the additional fairing nodes)

[Kerbart]

From what I understand, auto-strutting reinforces joins by mounting an invisible strut from the join to the part the strut will attach to.

That will make a join stronger, but as in this case the strut runs through the center line of the rocket, I fail to see how it would make the connection stiffer. Can it be that the node simple buckled and thus failed?

[Firemetal]

1 hour ago, Gaarst said:

Fairing bases have additional nodes to add possibilities for payload attaching. I think your rocket engine is attached to the fairing base and not the decoupler.

Try removing the fairing base and what's below, reattach the decoupler and you should be fine. (If you're struggling finding which node is the right one, there is an option to disable the additional fairing nodes)

I checked. It didn't look as if it was the fairing as there were no structural pieces going up to the engine.

 

1 hour ago, Kerbart said:

From what I understand, auto-strutting reinforces joins by mounting an invisible strut from the join to the part the strut will attach to.

That will make a join stronger, but as in this case the strut runs through the center line of the rocket, I fail to see how it would make the connection stiffer. Can it be that the node simple buckled and thus failed?

Autostruts kill the wobble. I am just to lazy and don't want to create drag and add to the part count so I use autostrut.

Fire

Edit: @Gaarst I tried what you said and it didn't work. I believe I have a very annoying bug. Thanks for trying though!  

 

Edited October 31, 2016 by Firemetal