Strange fuel consumption

[maddog10]

Here is my rocket: http://imgur.com/TkiHAcQ

When I activate the 4 rockets the first rocket seems to consume much more fuel than the rest. This of course leads to flame out of that engine and a nice spinning crash if I don't activate the parachutes. Is there anything i can do to eliminate this weird fuel consumption. I tried adding gas lines between the tanks but that just resulted in no change of behavior. Could it be the order I assembled the 4 rockets beneath the quad coupler?

Thanks!

[maddog10]

I think I may have identified the issue. I left the rocket on the control pad and then proceeded to burn all of the fuel while checking the tanks in the stack. I believe I must have some of the tanks connected incorrectly as they still have fuel in them and when I dumped the fuel from them into the longest lasting rocket then it fired back up. I have to leave for awhile but I'll retry the design tonight.

[Johnno]

When I activate the 4 rockets the first rocket seems to consume much more fuel than the rest. This of course leads to flame out of that engine and a nice spinning crash if I don't activate the parachutes. Is there anything i can do to eliminate this weird fuel consumption. I tried adding gas lines between the tanks but that just resulted in no change of behavior. Could it be the order I assembled the 4 rockets beneath the quad coupler?

The picture is a bit too small to be sure, but are you using 4 of the same engine? Looks to me like you're probably using two T45 and two T30 engines. Are you turning them on all at the same time? Is the fuel amount the same in all stacks?

What you'd want to do is remove everything below the quad coupler, enable 4-symmetry, then add the same tanks and engines downward. That way all stacks will be identical, which would solve any problems.

[maddog10]

Johnno,

The engines were the same but I realized where I went wrong. When I started deleting the fuel tanks I could see where some of the fuel tanks were connected to the fuel tank next to it but not to the tank above it. So I trashed the whole thing and started building from the nose cone down. Before I had gone from the bottom up and I think I was experiencing the issue with the Unity engine with the parent child relationships. Before I couldn't get the 4 way symmetry to work when adding tanks and it worked this time. Thanks for the advice as you were spot on.

Thanks,

Maddog10