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[GreatWyrmGold]

Watching Kirrim On Duty a millionth time made me ask myself, what would happen if Gilly actually hit Kerbin?

Well, I'm not sure, but given Gilly's density and size, if it hit Earth on land it would leave a crater 225 miles across and over a mile deep, which means that it would stretch across a few degrees of latitude even if it hit at the equator. And that's assuming minimal speed; if it's hitting the Earth as fast as anything orbiting the Sun can, it punches straight through the Earth's crust; the crater ends up 573 miles across and 1.43 miles deep. Rock melts; about half the melt remains in the mile-deep crater, forming a layer about nine miles deep. Supposedly.
(Source)

Oh, and now Land/Drop is always making everything explode again.

In all this time you could have read the entire thread at the ksp forum. Mods do not have the greatest faq's, if at all, but there's always the official forums.

...
So, you're saying that you expected me to get "read the forum thread" from your statements, which never mentioned said thread in any way.
Thanks for being so clear!

Oh, and the forum thread is defunct. So you're even less helpful than I initially thought!

I'm fairly sure it has to do with the differing gravitational forces in each SOI. Changing SOI's instantly is a big deal. A lot happens.

I'm fairly certain Eve's SoI extends more than 200 kilometer from its surface.

[miauw62]

Being on a body when another body's SoI suddenly overtakes you causes a form of kraken iirc.

[BigD145]

I don't have all the information, so yes. Best to go to the originator of the mod/tool and the hundreds of other eyes that have used it. I use hyperedit very rarely and when I do I'm going off of advice I heard when it first came out and I don't even think much about the why anymore.

Eve's SOI is over 85000 km. It's atmosphere is out to a fraction of that. It rotates at a different velocity than Kerbin. All these factors plus rounding errors build up and will tear a craft apart if they suddenly appear on or near the surface of one SOI to another SOI, atmosphere or no atmosphere. Just going surface to surface purely on Kerbin will possibly make some number rounding tear you apart. KSP is made to deal with surface to air to space to different SOI to air to surface. If it couldn't do this we wouldn't even have a release. It fiddles with numbers the whole way and things still do occasionally fall apart, ie kraken.

[IronTomato]

I wasn't talking about "What would happen realistically". During the video I mentioned, Danny used hyper edit to put Gilly on a collision course with Kerbin. I was asking how the game itself would have responded if he let it happen.

[Sean Mirrsen]

I wasn't talking about "What would happen realistically". During the video I mentioned, Danny used hyper edit to put Gilly on a collision course with Kerbin. I was asking how the game itself would have responded if he let it happen.

Planets don't collide. They would have just passed through each other. What would have happened to any craft on the surface of either planet is hard to say, but anywhere between "violently destroyed" and "crash the game" is possible.

[GreatWyrmGold]

Being on a body when another body's SoI suddenly overtakes you causes a form of kraken iirc.

Eve's SOI is over 85000 km. It's atmosphere is out to a fraction of that. It rotates at a different velocity than Kerbin. All these factors plus rounding errors build up and will tear a craft apart if they suddenly appear on or near the surface of one SOI to another SOI, atmosphere or no atmosphere. Just going surface to surface purely on Kerbin will possibly make some number rounding tear you apart. KSP is made to deal with surface to air to space to different SOI to air to surface. If it couldn't do this we wouldn't even have a release. It fiddles with numbers the whole way and things still do occasionally fall apart, ie kraken.

Good thing I was going from the surface, to Kerbin orbit, to Eve orbit, and only then using the Land/Drop function. Except that it didn't work. (Well, it worked once. Still not sure what was going on then or how to replicate it.)

[BigD145]

Being on a body when another body's SoI suddenly overtakes you causes a form of kraken iirc.

Eve's SOI is over 85000 km. It's atmosphere is out to a fraction of that. It rotates at a different velocity than Kerbin. All these factors plus rounding errors build up and will tear a craft apart if they suddenly appear on or near the surface of one SOI to another SOI, atmosphere or no atmosphere. Just going surface to surface purely on Kerbin will possibly make some number rounding tear you apart. KSP is made to deal with surface to air to space to different SOI to air to surface. If it couldn't do this we wouldn't even have a release. It fiddles with numbers the whole way and things still do occasionally fall apart, ie kraken.

Good thing I was going from the surface, to Kerbin orbit, to Eve orbit, and only then using the Land/Drop function. Except that it didn't work. (Well, it worked once. Still not sure what was going on then or how to replicate it.)

*shrug*

Spoiler (click to show/hide)

Land and water landings. I mod heavily, I just don't mod the stock physics. Hyperedit was not made for modified physics.

Kerbin orbit. Eve orbit.
Eve water. Eve above land.
Eve land.

[GreatWyrmGold]

How, exactly, do modified physics change things up? I mean, FAR and Deadly Reentry shouldn't change things when I'm dropping them from outside the atmosphere, right?

[BigD145]

Many mods play by the rules. The rules of stock. They have set values for things. I'm guessing hyperedit doesn't read Eve from any sort of variable, if it even can. It probably uses hardcoded stock values.

[GreatWyrmGold]

...What values? And, again, how would Deadly Reentry or FAR change anything?

[Aseaheru]

Values in the base game.

Some mods do sneaky things like change the shape, size, mass or similar of a object.

[BigD145]

Values in the base game.

Some mods do sneaky things like change the shape, size, mass or similar of a object.

They change the stresses at which parts explode, for example. G's, heat, whatever it may take to cause explosions.

DR and FAR change everything for a vehicle in motion. Make a craft with DR installed, fly it into space, and then remove DR and load the craft. That craft will likely explode so violently the moment physics loads that pieces that survived will be traveling at or near the speed of light. KAS will periodically do that. FAR changes the properties of every part in the game, I think. Everything has interacting drag. Put a fairing around parts and the fairing's drag has precedent instead of all the parts inside. Okay now what if a ship in flight suddenly gets confused and the fairing no longer enters into the equation? Suddenly your drag mounts up and you're likely to get forces on all your parts that weren't designed to take it. Between that and DR, in atmosphere, things are probably going to explode. The vehicle will at least tear itself apart.

Some FAR faq stuff on how mods interact (or don't):

Spoiler (click to show/hide)

Code: [Select]

Does this plugin work properly with other mods / part packs?
Sure; FAR figures out what the properties of the part should be based on its dimensions and some basic aerodynamic assumptions. If you use a mod and suspect that it causes unrealistic behavior, search the thread to see if it has been brought up / addressed by the latest release; if it hasn't, feel free to bring it to my attention. The only exception is with wing parts, which are more complicated and currently must have their properties specified manually.

Code: [Select]

I'm using MechJeb and it's telling me that the terminal velocity of my vehicle is *insert huge number here* / Why is MechJeb saying that there is no drag force on my rocket?
MechJeb does drag estimates based off of the old stock drag model, which FAR zeroes out. Long story short, the reason it's not measuring any drag force is that it's looking at the wrong fields to measure drag; it has no idea that FAR is applying drag now. Sarbian is currently working on code to allow MJ to work with FAR.

[Sean Mirrsen]

FAR wipes the aerodynamic data of most parts and calculates its own. It may be that changing position with HyperEdit makes something break in that calculation.

It's more likely that you're just hitting some design peculiarity, mostly phantom forces appearing out of nowhere. I had that with HE previously, and I was able to save the ship by turning on indestructible joints and quicksaving right after the jump. Quickloading then wiped the phantom forces.

[Greiger]

Off the current topic but I caught this screenshot and couldn't resist:

Spoiler: I'm trying to VTOL, am I doing it right? (click to show/hide)

[BigD145]

Off the current topic but I caught this screenshot and couldn't resist:

Spoiler: I'm trying to VTOL, am I doing it right? (click to show/hide)

Damnit FAR, why you destroy all our hopes and dreams?