why is ths happening.

[THE META]

so I'm trying to get a ~65 ton payload in to a orbit of around 300KM apoasis to dock with my space station. however every time I launch it runs well, but then I run in to a structural failure once I reach the upper atmosphere, always in the launch stage. each time it happens I either add more struts or reorganise my strutting, which sometimes fixes the problem but then if it does stop then another structural failure happens. I don't know what to do! if anyone needs to know what launch stage I am using, it is the spacier launch stage that HOCgaming uses. iif you know how to fix it or if you have any helpful suggestions that may stop it from happening, then can you please tell me.

Edited August 1, 2013 by THE META

[capi3101]

Hmm...I've occasionally run into issues with my payload disassembling on me or telescoping into the stack. Usually it happens when I've got a very high TWR high up in the atmosphere. How many gees are you pulling when the failure occurs? If you're much above two gees at that point, I'd suggest throttling back.

Pics or a .craft file would help others diagnose the problem better.

[AnalogAddict]

I concur with capi3101, as you burn fuel and enter thinner atmosphere the g-forces and strain on your craft is increasing due to increasing TWR. If you maintain about 2, maybe 3 g's you should be fine.

Edited August 1, 2013 by AnalogAddict

[7rex]

I would watch you G meter, as you get thinner atmosphere your craft can accelerate faster.

[TheDarkStar]

Are you using an LV-N in the upper stage? Its fairings separate to the side and can collide, unlike the fairings of other engines. Make sure that they are not hitting anything.

Also, check for parts from different stages clipping into each other. It would help if you showed a picture of the rocket to make it easier to find out the problem.

[THE META]

I don't have any LV-N's on my craft no, as its meant to dock with a ship in a highly circular 300KM orbit. I was thinking that it may be the G-forces, I'll keep an eye on the G meter and if I see it going too high then I will throttle down, because that might just be it. if it still doesn't work then I will provide pics.

[THE META]

Ok it definitely seems to be the increased G-force in the upper atmosphere that was destroying my ships, will have to take note of that during future launchs.