Engine thrust goes right true Lab

[Martian Emigrant]

Hi.

Moderators please move this tread where it need to be as I am sure it doesn't belong here.

Not sure if this a "New" bug. It is to me.

I run 1.6.0 with MechJeb installed. Not on this ship.

Situation:

I added a lab to a Minmus station. Docked backward with RCS. So far no issue.

 

When it got time to go home I realised that I forgot to put a docking port between the lab and the engine bell.

Decided to blow the lab with the engine and go home.

 

Except the thrust goes right true and heats up the docking port on the other side of the lab.

 

I was able to thrust right true the lab and go home with the only inconvenience of not getting any delta-v readout.

 

 

Reminded me of this:

 

Thanks.

 

ME

 

Edited January 30, 2019 by Martian Emigrant

[Gargamel]

Moved to Gameplay Q's. 

 

[Snark]

41 minutes ago, Martian Emigrant said:

Except the thrust goes tight true and heats up the docking port on the other side of the lab.

My guess is that what's going on is that you've got the lab directly attached to the Terrier in a way that puts the Terrier's exhaust "inside" the lab, so the game doesn't realize that there's a part-exhaust collision there.

I tried this myself and was easily able to reproduce it:  attach a lab directly to a Terrier, activate the engine, it heats up the part behind the lab.

[Martian Emigrant]

1 minute ago, Snark said:

My guess is that what's going on is that you've got the lab directly attached to the Terrier in a way that puts the Terrier's exhaust "inside" the lab, so the game doesn't realize that there's a part-exhaust collision there.

I tried this myself and was easily able to reproduce it:  attach a lab directly to a Terrier, activate the engine, it heats up the part behind the lab.

It is (Was) attached directly to the lab. Just clicked it in the normal way....I think. Thought I had a docking port there.

In a "Normal" world that should not happen....

 

So is this a "New bug"? Or is it something new.

Either cases I will try not to do that again....Or not in a normal way anyway....Not sure how useful that "Feature" would be. Knowledge is never quite lost.

 

Now I wonder if putting a Terrier (Or other engines) in a cargo bay would give thrust...

 

ME

[Martian Emigrant]

Just did some testing in sandbox.

Terrier in a bay heat the bay up as it should. No thrust.

Terrier on a fuel tank. thrust goes right true.

Other engines don't. Other engines have a small "Air" gap between the bell and the following object.

I am guessing that the redesigning of the engine changed where the engine end VS where it connects to trailing objects causing the engine tail end to be "Inside" the trailing object.

 

ME

Edited January 30, 2019 by Martian Emigrant

[bewing]

This is a known bug for the devs and QA team in 1.6, but I don't know if there is also a copy of the bug report in the public tracker.