Construction Attaching bottom node of engine to cargo bay (and sometimes any engine radially to cargo bay) breaks the delta v readout of any engines attached downstream of the cargo bay

[mattihase]

Reported Version: v0.1.5 (latest) | Mods: none | Can replicate without mods? Yes 
OS: Windows 10 | CPU: i7-10870H | GPU: RTX 3070 | RAM: 16GB

 

The cargo bays seem to be the cause of a lot of issues regarding Delta V calculations that I have encountered in the game.

If you take the bottom node of an engine and attach it to any of the attach nodes on a cargo bay (any cargo bay), both that engine and any engines on the craft attached to the root of the craft via the cargo bay become removed from the vessel delta v calculation.

This sometimes happens with radially attached engines (and sometimes doesn't), leaving the radially attached engine fine but any other engines removed from the delta v calculation. Also, the longer you mess around with this, the less stable the delta V calculations seem to get as during testing I managed to get to a point where I had a vessel consisting of a probe, fuel tank and engine only with no delta v, simply because a cargo bay had previously been attached to the craft.

Included is a craft file of the craft I built to work out whether or not cargo bays were causing my problems. It has 0 Delta V but goes pretty far despite that. The best way to scope out this bug however just seems to be messing around in the VAB with engines and cargo bays.

 

Included Attachments:

LookMaNoDeltaV.zip

Edited November 10, 2023 by The Space Peacock