NathanKell

@ZooNamedGames there's an exception in SetupPropellant for an engine. That's what happens when KSP can't find a resource. It's coming from F1 Rocket Engine. I suggest deleting that and instead using the F-1 from FASA or RSB or SSTU.

Geostationary orbital height is that height at which the orbital period is the same as the reference body's sidereal rotation period. The sidereal rotation period is not the same as the solar day, because the body moves in its own orbit (with respect to the sun) during its rotation. The sidereal rotation period is also known as the stellar day or the period with respect to the fixed stars.

Is that number using the new sidereal rot period or the old (full 6h) one? In 1.0.5 solar day is 6h and sidereal is slightly less.

Let me clarify. Prior to my change last night, KSP raycasted to get a hit transform. Then, KSP said use (thattransform).root and looked for a Part component on _that_ transform's gameobject. This is because the transform you hit might be a submodel (say, the nozzle of the engine), and the Part component is on the parent of the parent of that transform. However, only full-physics parts are the roots of their own hierarchies; non-full-physics parts are themselves children of other parts. So that code is not safe to use. Now, KSP checks upwards and stops when it hits the first Part component it finds.

You are missing files, like the resource used by those engines. Make sure you have all needed files (like, say, Firespitter's resources file as well as its plugin).

@IonStorm that's wrt the ecliptic and presumably J2000?

You should be able to get the ephemeris for any epoch...

You can get the actual ephemeris from JPL's HORIZONS. RSS uses 1 Jan 1951 minus a few minutes as the epoch (it's in the top of the general RSS settings file, IIRC) and we use Earth-equator-centric coords.

Afraid my time is taken up by RealJob (i.e. KSP itself) at the moment. Should not be hard at all however. @IonStorm awesome challenge, and awesome mission! Per some of the posts above, you might want to add a category for RSS/RO recreations. Because that will be rather different. :]

Sorry guys, been crunching on 1.1 pre right now. Kasper dropped the Soon(tm) bomb on twitter and you know what that means. @Dman979 thanks for the ping. @ZooNamedGames Looking at the log. Ah, that was easy. @ZooNamedGames you are not on the current build of 1.0.5. Not sure how you managed it after all this time, but...yeah. You missed the patch we released two days later. Redownload KSP from wherever you have it from and the error will be fixed.

Quis stalk ipsos stalkers?

In order to have mods enabled or disabled per save game, you would need to run KSP's loading process over again.* At which point you might as well start KSP from a different folder. *Because many mods either insert themselves during the loading process and do things, or rely on the loading process to set themselves up, or rely on MM doing its processing.

@allmhuran as I suspected it's engine exhaust heating, nothing to do with the thermo system per se. However, the engine exhaust heating shouldn't be skipping the part. Here's why this is happening. As it stands now, the engine exhaust damage, after it raycasts and detects a hit, finds the root transform of whatever transform it hits. And physicssig=1 parts are parented to the part that has full physics. So that 'root' check gives the parent part, not the hit part. If you watch closely in those gifs, you'll see that the convective flux of the decoupler is negative. That means it is being cooled by its environment, not heated. By contrast, the convective flux of the full-physics parent part is very high--that's where the exhaust heat is going.

@New Horizons I think you're talking about RO? I'd suggest asking on the RO thread. @NFunky If you are in fact launching during a window, Earth and Mars will be aligned such that you should line up fine. If in doubt, launch a probe into the same plane as the Moon (it's close enough to the ecliptic) and then use MechJeb's "Advanced Transfer to Another Planet" option in the maneuver planner to find when the next window is and how much it will cost. Then launch into the Moon's plane again during that window and let MJ plot your maneuver.

@Lack I guess I never posted the Derwent hackjob I made. Sorry. It is rather embarassing though! Also, speaking of cabins, I wondered if you considered making some kind of Vostok like capsule? Or maybe one of the capsule designs from MISS? KSP does need a 2+ person capsule midway between the Mk1 and MK1-2...

By contrast, I'd like to ask about an "Advanced mode" i.e. a mode where having SAS on will only zero out rotation if the angular velocity is below a (very low) threshold. And for body-relative rotation, might the vessel consume some miniscule amount of resources required by torque-providing parts? (note: 1.1 should make that easier with ITorqueProvider).

@allmhuran thanks! Nah, I'm mostly just wondering if for some reason the engine code in particular is doing something odd, or if it's something else. Like, do they not take reentry heating?

Great!

@allmhuran one further question. Can you get that behavior under any other heating scenario, or is it only with engine exhaust heating?

@C1DEAN ok, then a pic of the craft in the VAB, with the mechjeb delta V stats window open? Maybe I can figure something out from that.

@EladDv that's awesome, we can definitely use the help there!

@C1DEAN Oh, we're fairly quick around here. And yes, early on WACs will fail a lot. Even after many flights you'll be lucky to have >90% reliability with them. During flight, with the TestFlight window open, what is the MTBF for your burning engines? Note that it's low during the first 5 seconds, then stabilizes. After you exceed the rated time, it starts shrinking again.

Engines have rated burn times. In the VAB, right click on the engine in the parts list and scroll down to find the config you're using. Make sure the stage time is less than or equal to the stated rated burn time.

@blackrack don't think we do, but thanks.

@Manwith Noname It happened in the last few exp builds. I'm trying to figure out why, haven't unbroke it yet. No idea why you asked that here though