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dkavolis / Ferram-Aerospace-Research

Aerodynamics model for Kerbal Space Program
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Water in v0.16.0.0 "Mader" is deadly #102

Open TheRealWiwaxia opened 3 years ago

TheRealWiwaxia commented 3 years ago

Water in FAR v0.16.0.0 "Mader" is deadly to vehicles that land in it in RSS v18.1.3. It ranges from endless bouncing on the surface of the water that makes recovering difficult, to violent ejections from the water that destroy the vehicle. Older versions of FAR such as v0.15.11.4 "Mach" have issues such as bouncing, but it is usually not severe enough to destroy the craft.

Result of ditching a plane in water at ~80m/s with Mader: Screenshot (260)

Result of ditching a plane in water at ~80m/s with Mach: Screenshot (268)

siimav commented 3 years ago

I can confirm from my own experience that water is behaving a lot worse that it used to. This isn't limited to only planes since sounding rockets and return capsules can also randomly bounce into the air and get destroyed on splashing down again.

dkavolis commented 3 years ago

This might be related to change in how FAR handles exposed areas, I don't think I touched anything else physics related. Can you try a patch

@FARConfig:FINAL
{
    @Settings {
        @exposedAreaUsesKSPHack = false
    }
}

This will revert the changes done but note that heating will also be considerably lower than in stock.

siimav commented 2 years ago

@dkavolis I can confirm that this patch will substantially change how water behaves. Did 5 splashdowns with my plane at various speeds and descent rates and on none of those did I get thrown back into air again. On one of those, the plane took 0 damage when touching the water at 120m/s horizontal speed. I feel like this change makes the water even too friendly.

edit: after some more testing it appears that exposedAreaUsesKSPHack was a red herring