Kerbal Space Program

Squelch wrote:

Could you supply us with the craft file so we can investigate please?

Sure, please refer to this cargo plane:
https://kerbalx.com/XLjedi/KC-09-Drake

Loading and unloading any of my compatible rovers, like this fuel truck:
https://kerbalx.com/XLjedi/RV-10A-Fuel-Truck

Each of my craft pages also include videos of previous successful missions with the plane and various rovers. So you can see they all worked fine prior to 1.4, but now as I try to load/unload vehicles this happens:

https://youtu.be/s2vA0jEROSc

In the video, KSC loading occurs at 0:50
Island unloading with damage occurs at 5:15

It's like there's a hidden collision mesh on the right side of the Mk3 Cargo Ramp as you exit that likes to destroy parts and it seems to happen more during unloading. In the video clip you'll notice the fuel truck loads fine at the KSC, although for some rovers it can happen during loading too. The explosion during unload at the Island Base also takes out a couple nearby parts. It does seem to consistently damage the right side of my rovers as they transition the Mk3 Loading Ramp.

I have also tested it by removing nearly every part from my cargo plane to isolate the Mk3 Ramp. It still happens and it's always damage to the right side of the rover. ...and documented in this very short video clip:

https://youtu.be/bqC_Z3Tjcu0

I assume it's related to the MK3 Cargo Ramp because I have tried this with some of my other rover designs and the same thing happens, but with different parts. On my RLV-21 Rover it takes out the Gigantor solar array.

Unfortunately, this is still an issue in v1.4.2

I just tested this with the current beta, and it didn't happen to me, so maybe it's been fixed

I tested on 1.4.3.2123

More testing showed that it probably is still a problem, but I noticed a possible interaction between some sepretrons and have asked him to test without them.

From the author:
I've never once been able to exit the ramp without the parts on the rover exploding for the craft files that I provided

There is definite improvement, I was able to exit without explosions about 3/4 of the time. Speed seemed to be a factor, but not positive about that

linuxgurugamer wrote:

I just tested this with the current beta, and it didn't happen to me, so maybe it's been fixed

I tested on 1.4.3.2123

More testing showed that it probably is still a problem, but I noticed a possible interaction between some sepretrons and have asked him to test without them.

In my second video above... example 2... I specifically removed every part except the Mk3 Ramp and attached cargo bay, and it still happens. So no, there is no interaction going on with seperatrons.

No change in v1.4.3

The parts still fall off and/or blow up on exiting the Mk3 Cargo Ramp, same as 1.4.1 and 1.4.2

Still an issue in 1.4.5. I am about to give up on using all of the extendable solar and radiator arrays on rovers, because they just fall off and explode under what should be a normal loading/unloading.

Height of panels may matter. Tested with modded solar panels and same problem occurred. I have uploaded two videos. One with stock panels, and one with panels from the Near Future Solar mod.
https://youtu.be/IbruWU7JGVs
https://youtu.be/1hSyIXQls-g

As stated by JPLRepo, this is not a bug. Thus, I will no longer refer to this behavior as a bug. Link below:
https://forum.kerbalspaceprogram.com/index.php?/topic/178890-kerbal-space-program-update-15-grand-discussion-thread/&do=findComment&comment=3468639

Here is a video showing the behavior in 1.5.0. On the third pass of the rover through the tunnel, the behavior instantly destroys both rover and tunnel.
https://youtu.be/7T_Kny3Ro-Y

This report has a more down-votes than any other. Down-votes usually indicate that the report indicates a misunderstanding of the normal and desired behavior of KSP.
In this, case however, the behavior does not seem to be normal because of
1) the asymmetry (panels near the right side of the ramp break) and
2) the logged high collision-velocity, between parts that had visually ample clearance.
I suspect the down-votes communicate that this bug gets relatively more attention than merited by its severity, or simply expression of annoyance that it is repeatedly brought up in reply to announcements of new features.

The classic use of the ramp, a cargo drop, does not suffer this bug. https://forum.kerbalspaceprogram.com/index.php?/topic/180336-cargo-airdrops-with-the-mk3

Maybe the Unity update changed either the collision-triggers or the rules for detecting what is 'inside' a mesh. Cleaning up the Mk3 model during the current art-pass might resolve this bug.

For example, replacing the model only of the stock mk3 ramp with a similarly-shaped model from the mode 'Mk3 Expansion' https://forum.kerbalspaceprogram.com/index.php?/topic/109401-mk3-expansion-ksp-16-version-147-101718/ and then re-loading the example craft, avoids the bug (and also changes the shape of the ramp a bit).

  @PART[mk3CargoRamp] {
    @MODEL {
      %model = Mk3Expansion/Parts/Utility/Ramps/LAdapterRamp
      texture = Mk3CargoBay, Squad/Parts/utility/mk3CargoBay/Mk3CargoBay
      texture = Mk3Adapters, Squad/Parts/FuelTank/adapterTanks/Mk3Adapters
    }
    @MODULE[ModuleAnimateGeneric] {
      %animationName = AdapterRampLong
  }}

This behavior still exists in 1.6.0.
https://youtu.be/QG1o841eqBY