Kerbal Space Program

I haven't tried this in 1.4.2 but I've noticed it before in 1.3.x. The intensity of the bounce seems to depend on the slope. If you come out of the time-warp on flat ground, the bounce is minimal but it can be huge when you're on a steep slope. I've seen my ship bounce up at 45 m/s on the Mun.

While testing the other landing gear bug (#18286), I noticed that as soon as you go into warp x5 (2nd green arrow) the compressed struts will straighten completely, extending them into the ground. When you come out of warp they either cause the jump or explode due to this situation. This bug fix requires that warp not cause struts to extend. Furthermore, it would seem that when struts deploy, the spring physics is not activated until that last moment when it kicks. This may be how they went about starting the physics effect of the spring and why it does this when coming out of warp. The physics should be applied as the strut moves into position, allowing the springs to compress while the strut moves. With warp, the amount of compression needs to be locked in so that when coming out of warp, the weight can be balanced with the amount of compression to determine if any more bounce should exist. This would help keep the struts from pushing through the ground, and make return from warp more steady.

Having the same issue with some of the legs in my mod. Has brought me close to insanity before noticing it's a KSP bug.

If I had to guess it might have something to do with the wheel collider being in the wrong place for a spit second. That would explain the random forces that kick the vessel into the air when loading it.

Some GIFs of the the particular issue I had:

https://gfycat.com/HospitableWeakDouglasfirbarkbeetle
https://gfycat.com/OffbeatSlushyHeron

It might not seem obvious, but there is more work that needs to be performed in settling your physics when a plane loads than before, so jumping to warp right away might not be the best solution. Still, if more work is to be done here, it would be to freeze the physics work until warp is complete, then start over affecting new changes in weight (such as when mining ore). For now though, the best work around is to wait and make sure your ship is stable before time warping. Alternatively, the game can be coded to refuse a time warp order while physics is settling in much the same way as it does when moving on the surface or in atmospheric flight. This will help prevent such actions as jumping to x5 or greater warp immediately.

jclovis3 wrote:

It might not seem obvious, but there is more work that needs to be performed in settling your physics when a plane loads than before, so jumping to warp right away might not be the best solution. Still, if more work is to be done here, it would be to freeze the physics work until warp is complete, then start over affecting new changes in weight (such as when mining ore). For now though, the best work around is to wait and make sure your ship is stable before time warping. Alternatively, the game can be coded to refuse a time warp order while physics is settling in much the same way as it does when moving on the surface or in atmospheric flight. This will help prevent such actions as jumping to x5 or greater warp immediately.

Can you reproduce what I'm seeing in 1.4.3? I think if they can make "loading -> reload" totally fine, they may apply the same technique to time warp. Though I don't know how they code, I believe there is no much difference between "stop warping" and "load craft" when it comes to starting accurate physical simulation.