vessel not accelerating at all / no thrust applied

[Psykikk]

hey there,

I wondered what could be the reason for the following occurence:

engines work, fuel flowing, all seems good.

BUT: it seems like no thrust is applied at all.

I encountered that while trying to use a skycrane-setup (engines on top sides, while having something attached underneath)

didn't lift off at all.

and now I encounter the same problem, trying to built aspaceplane / VTOL.

engines fire up, no thrust applied. like it is glued to the landing strip.

any advice and what might be the reason ?

linky to pics if that might help

thank you guys in advance

[sal_vager]

Can you open the debug panel with Alt+F2 and check the thrust isn't hitting anything it shouldn't please

[Navy2k]

Seems like you're thrusting into your wings.

greetings

Ben

[Alshain]

There are a limited reasons for this to occur.

1. There is a known bug in the Tier 2 launchpad in 0.90 that causes this.

2. Your thrust to weight ratio is too low.

3. Your engines are obstructed by something.

So, for #1 your on the runway, no issues I know of there. 2 It looks like you have plenty of TWR from what ever mod that is (assuming it is correct)

3. Are you taking off vertically there? The turbojets are powered up, I can't tell from the picture. Your VTOL engines look obstructed to me.

[Psykikk]

i was trying to take of using jets / wings. he vtol are planned for usage on the Mun.

all buildings are fully upgraded.

the mod is latest mechjeb, used for TWR / deltaV readings mostly.

could it be that when only some engines are obstructed, no thrust will be applied , whatever engine is used ?

[Claw]

could it be that when only some engines are obstructed, no thrust will be applied , whatever engine is used ?

Nope. It'll only stop thrust for the engine that is blocked.

If your craft is all stock except for MJ, load up a .craft file somewhere and I'll have a look. There aren't any stock bugs that I know of that would cause this.

Cheers,

~Claw

[steve_v]

like it is glued to the landing strip.

That should roll slowly down the runway even with no thrust at all, as KSP planes do. If it's not then there's definitely something fishy going on beyond just a design problem... What mods 'ya running? Edited January 9, 2015 by steve_v
spelling

[Stratzenblitz75]

I suspect that one of the parts on your space-plane has become "stuck" in space, like this:

As you can see, the probe core is levitating and will not move at all. When the craft was intact, it would not move either. I have no idea what causes this bug, it seems to just "happen", but I do know a way to test for it: break your craft to pieces. Try forcefully dissembling your craft (with decouplers or ramming it). If this is indeed a levitating part bug, you'll find that many of the parts on your ship will scatter in the disassembly, but 1 or more parts will remain stuck in their original positions.